CN103183342B - Controllable synthetic method for phosphorus doped graphitization carbon spheres with hollow structures - Google Patents

Controllable synthetic method for phosphorus doped graphitization carbon spheres with hollow structures Download PDF

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CN103183342B
CN103183342B CN201310114192.4A CN201310114192A CN103183342B CN 103183342 B CN103183342 B CN 103183342B CN 201310114192 A CN201310114192 A CN 201310114192A CN 103183342 B CN103183342 B CN 103183342B
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salt
high temperature
carbon
ratio
nanometers
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CN103183342A (en
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尹诗斌
罗林
荆胜羽
朱强强
卫怡
杨力祥
贾优
黄飞
张绍良
强颖怀
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Jiangsu Environmental Protection Technology Co Ltd Como
China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

A controllable synthetic method for phosphorus doped graphitization carbon spheres with hollow structures comprises the following preparation steps: (1), dissolving silicon source, soluble metal salt and catalyst into resolvent according to molar ratio, stirring until complete resolution and then transferring to a hydrothermal reaction kettle for hydro-thermal synthesis, then cleaning, filtering and drying the obtained precipitate so as to obtain a primary commodity;(2), reducing the obtained primary commodity in a high-temperature reaction furnace under gas shield at high temperature;(3), placing the product obtained through high temperature reduction into acidic solution for soaking, cleaning, filtering and drying, finally, for phosphorus doped graphitization carbon spheres with hollow structures can be obtained. According to the invention, the phosphorus doped graphitization carbon spheres with hollow structures have the advantages that the appearances are uniform, a carbon shell is provided with a micropore structure, mesoporous carbon support structures are arranged inside the carbon spheres, the graphitization degree is excellent, and the phosphorus doped graphitization carbon spheres can be used in numerous fields of efficient catalysis and conversion, energy storage and conversion, medicine release and control, material adsorption stripping and the like. The template-free hydro-thermal synthesis technology is simple and controllable, and can be used for mass production.

Description

A kind of phosphorus doping has the controllable synthesis method of hollow structure graphitized carbon ball
Technical field
The synthetic method that the present invention relates to a kind of phosphorus doping nano hollow carbon ball, particularly a kind of phosphorus doping has the controllable synthesis method of hollow structure graphitized carbon ball.
Background technology
Nano hollow carbon ball is a kind of special carbon material, there is high chemical stability, lower density, good thermostability and biocompatibility, not only can be used as electrode materials, support of the catalyst, gas storage medium, lubricant, material fractionation by adsorption, drug sensor, drugrelease, artificial cell, prepare the template of other materials etc., also, as various fields such as dyestuff, rubber reinforcement material, lightweight structural materials, attracted increasing concern.
Hollow carbon sphere is mainly prepared by methods such as organism Pintsch process, chemical vapour deposition, medium reduction, laser distillation, arc-over, template self-assemblies at present.These methods will be carried out conventionally under hot conditions, long reaction time, and energy consumption is large, and not only apparatus expensive, complicated operation, cost are higher, and hollow ball shape irregularity productive rate low-purity is not high, has directly affected suitability for industrialized production and the application thereof of hollow carbon sphere.Therefore explore the technology that low temperature is prepared hollow carbon sphere on a large scale, not only contribute to inquire into theoretically the formation mechanism of hollow carbon sphere, and supply raw materials for its performance of research, contribute to promote the widespread use of hollow ball.
The synthetic method of hollow carbon sphere generally speaking can be concluded and be divided into two classes, template and without template, and wherein template is most widely used general.Its advantage is that pore passage structure and pattern are controlled, can design the hollow material of synthetic different size and pattern by adjusting the size and shape of template.It is template that aluminium meso-porous silica core-shell structure ball is mixed in ZL200910055527.3 employing, and furfuryl alcohol is carbon source, by removing template silicon-dioxide after its polymerization, carbonization, has prepared small-size meso-porous hollow carbon sphere.ZL200910198399.8 provides a kind of vacuum nano to build the method for preparing magnetic kernel medium hole hollow carbon sphere, take mesoporous SiO 2 hollow ball as basis, by the air pressure inside and outside change hollow ball, the source of iron solution of different concns is injected in hollow core, after thermal treatment, furfuryl alcohol is poured on hollow ball, by utilizing sodium hydroxide solution to remove silica template after its polymerization, carbonization, obtain having the meso-porous hollow carbon sphere of magnetic kernel.In whole preparation process, first to synthesize template and then will remove material that template is finally synthesized containing template.This has just caused three problems, and one is to synthesize and remove template to cause the manufacture process of whole material loaded down with trivial details, is unfavorable for that large-scale material is synthetic, has increased cost; Another problem is that hollow material output is lower; The 3rd, last in removing the process of template, if the strength of materials covering is not enough, may cause structural collapse to cause material to synthesize unsuccessfully.
For these shortcomings of template, people explore without template and synthesize hollow carbon material.
ZL200410024700.0, adopts chemical Vapor deposition process to prepare the nano cages with hollow structure ZL200610027992.2 and ZL200510110213.0 mix metal carbonyls liquid with low-carbon (LC) class organic liquid after.Magnesiumcarbonate be take as catalyzer in Nanjing University's (application number 201210062927.9), adopts chemical Vapor deposition process to prepare the hollow nano cages of nitrogen doping.Although chemical Vapor deposition process operates fairly simple, synthetic material shape irregularity, these materials in use tend to show the unstable of structure and the unhomogeneity of performance.Oxygen-bearing organic matter is usingd as carbon source in Shandong University's (application number 200810015929.6), packs reactor into, 500 ~ 600 with metallic zinc after mixing oc reaction 4 ~ 8 hours obtains nano hollow carbon ball after pickling.Owing to adopting metallic zinc as catalyzer and template, the internal diameter variable range of hollow ball is very little.Heilongjiang University's (application number 201210128545.1) adopts after trimeric cyanamide powder and formaldehyde solution Hydrothermal Synthesis the method for Pintsch process again to prepare nitrogenous greying hollow carbon sphere, and trimeric cyanamide wherein had not only served as template but also as carbon source.Although this method need not be added template and catalyzer in synthetic process, due to the limitation of trimeric cyanamide powder itself, limited equally the internal diameter of this hollow carbon sphere.ZL200910111112.3 is dissolved in source of iron in lower alcohol, and mix with the toluene solution containing tribromophenol or chlorophenesic acid, add afterwards the thermal synthesis of nitrogenous source high-temperature water to obtain the hollow Nano carbon balls of hydroxyl and amino functional, but because the later stage lacks pyroprocessing, be difficult to obtain graphited hollow carbon sphere.South China Science & Engineering University's (application number 201010528639.9) is dissolved in triphenylphosphine in toluene, adopt chemical Vapor deposition process to make phosphorus-doped spherical graphite, although do not add any catalyzer, resulting graphite pebbles pattern can not evenly be controlled and be not hollow structure.
The hot method of solvent (water) is synthetic the have compound of special construction and performance and the effective ways of novel material.Adopt water or organic solvent as reaction medium, mixing raw material reacts, and obtains carbon material after high temperature cabonization.(the Nano-architectures of ordered hollow carbon spheres filled with carbon webs by template-free controllable synthesis such as Hu Zhuofeng, Zhuofeng Hu, et al. Nanotechnology, 2012 23(48): 1-10.) take glucose and sodium stannate as raw material, Hydrothermal Synthesis the adjustable hollow carbon sphere of structure.But the carbon ball that this synthetic method obtains does not have graphite carbon to be existed.
Summary of the invention
It is simple that the object of the invention is to provide a kind of technique, with low cost, and the phosphorus doping that product purity is high has the controllable synthesis method of hollow structure graphitized carbon ball.
The object of the present invention is achieved like this, this controllable synthesis method, and step is:
(1) hydro-thermal is prepared nucleocapsid structure carbon ball
Carbon source, soluble metallic salt, catalyzer are dissolved in solvent according to mol ratio, are stirred to completely and are transferred to hydrothermal reaction kettle Hydrothermal Synthesis after dissolving, by the sediment undergoes washing obtaining, filtration, dry, obtain primary products;
(2) high temperature reduction of carbon ball
In high temperature reaction stove by the primary products that obtain high temperature reduction under gas shield;
(3) prepare hollow plumbago carbon ball
The product that high temperature reduction is obtained is placed in after acidic solution immersion, cleans, filters, is dried, and obtains the graphitized carbon ball that phosphorus doping has hollow structure;
Carbon source in step (1) is for being wherein any one of glucose, sucrose, starch, polyvinyl alcohol, polyoxyethylene glycol, polystyrene, phenol, Resorcinol, toluene, PAPE, diethylene triamine pentamethylene phosphonic or HMPA;
Solvent in step (1) is wherein any one of deionized water, polyphosphoric acid or the phosphorous aqueous solution;
Soluble metallic salt in step (1) is stanniferous metal-salt or the metal-salt that contains zinc, dissolves in 20 ~ 100 othe pure water of C or acidity or basic solution; Wherein stanniferous metal-salt is wherein any one of sodium stannate, potassium stannate, stannous sulfate, stannous oxalate, tindichloride or tin tetrachloride; Containing the metal-salt of zinc, be wherein any one of zinc acetate, zinc iodide, zinc fluoride, zinc chloride, zinc sulfate, zinc phosphate or zinc nitrate;
The metal-salt that described catalyzer in step (1) is iron content or containing the metal-salt of cobalt or nickeliferous metal-salt, dissolves in 20 ~ 100 othe pure water of C or acidity or basic solution; The metal-salt of described iron content is wherein any one of iron(ic) chloride, ferric sulfate, iron nitrate, the Tripotassium iron hexacyanide, yellow prussiate of potash, yellow prussiate of soda, ferrous sulfate, iron protochloride, ferrous ammonium sulphate, ironic acetate, ferric fluoride, ferric ammonium citrate, ironic citrate or Hexacyanoferrate potassium; The described metal-salt containing cobalt is wherein any one of Cobaltous diacetate, rose vitriol, cobalt chloride, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES, ammonium cobaltous sulfate or sodium cobaltinitrite; Nickeliferous metal-salt is wherein any one of nickelous bromide, nickelous acetate, single nickel salt, nickelous chloride, nickel ammonium sulfate, nickelous nitrate, nickel sulfamic acid, nickelous fluoride or nickelous carbonate;
The proportioning of the carbon source in step (1), soluble metallic salt, catalyzer is mol ratio 5 ~ 300:1:0.1 ~ 50; In the situation that carbon source content is certain, can regulate by adjusting the ratio of soluble metallic salt the inner/outer diameter ratio of hollow ball, by regulating the ratio of catalyzer and the degree of graphitization that high temperature reduction temperature is adjusted final product;
Hydrothermal Synthesis temperature in step (1) is 100 ~ 300 oc, 2 ~ 36 hours Hydrothermal Synthesis time;
In step (1) and step (3), for the reagent cleaning, be acetone or alcohol or 20 ~ 100 othe deionized water of C, purging method is for filtration or centrifugal, 60 ~ 300 ounder C vacuum-drying or protection of inert gas, be dried 1 ~ 24 hour; Wherein rare gas element is a kind of or its mixture in nitrogen, argon gas, helium, and proportioning is any, and wherein the purity of nitrogen, argon gas, helium is more than or equal to 99.99%;
Gas in step (2) is a kind of or its mixture in nitrogen, argon gas, helium, hydrogen, and proportioning is any, and wherein the purity of nitrogen, argon gas, helium, hydrogen is more than or equal to 99.99%, and gas flow is 5 ~ 500 ml/min;
High temperature reaction stove in step (2) can time variable control heats up, and can pass into gas shield, adopts air-cooled or recirculated water or shallow-layer refrigerated water cooling; Sample is placed in to the middle section of high temperature reaction stove, High Temperature Furnaces Heating Apparatus can be retort furnace, tube furnace or microwave oven, and cavity material can be quartz, corundum, pottery, stainless steel or insulating brick;
In step (2), the temperature of high temperature reduction is 500 ~ 3200 oc, the recovery time is 0.1 ~ 36 hour, heat-up rate is per minute 0.1 ~ 50 oc;
Acidic solution is acid iodide, Periodic acid, phosphoric acid, strong inorganic acid and mixing aqueous acid thereof in step (3), guarantees that pH is less than under 7 prerequisite to mix with arbitrary proportion; When carbon source and solvent are all not phosphorous, in the reagent of pickling, must have a kind of acid is phosphoric acid or the mixed solution that contains phosphoric acid, and wherein the ratio of phosphoric acid is any and non-vanishing;
The product first high temperature reduction being obtained before soaking in step (3) and acidic solution are ultrasonic or be uniformly mixed to being uniformly dispersed 20 ~ 200 oin C temperature range, soak 0.1 ~ 48 hour, then mixed solution is diluted to cleaning and filtering, and filtrate recycling recycling.
Beneficial effect, owing to having adopted such scheme, the preparation method of this phosphorus doping hollow structure graphitized carbon ball, products obtained therefrom purity is high, substantially free from foreign meter, pattern is even, carbon shell has microvoid structure, carbon ball inside has mesoporous carbon supporting structure, degree of graphitization is good.By regulating the ratio of carbon source and soluble metallic salt or the ratio that kind is controlled the inner/outer diameter of hollow carbon sphere, and micropore and mesoporous ratio.By adjusting ratio and the high temperature reduction temperature of catalyzer, control degree of graphitization.By the content of phosphorus or the concentration of hydrothermal temperature or hydro-thermal time or pickling temperature or pickling time or phosphoric acid solution in adjusting carbon source kind or Hydrothermal Synthesis, control the content of phosphorus.Soluble metallic salt and catalyzer as presoma are cheap, and easily recycling, can reduce costs environmental protection.Hollow structure graphitized carbon ball has and the diverse characteristic of conventional graphite material, can be used as catalytic material transforms for efficient catalytic, as electrode materials, be used for energy storage and conversion, as pharmaceutical carrier, be used for drugrelease, as gas storage medium, be used for storing up hydrogen separated with gas trapping, as filtering adsorbing material for separating substances, as template for the preparation of other nano materials, as conductive agent, as electrode materials, as lightweight strongthener, be used for the various fields such as rubber and resin enhancing.
Advantage: technique is simple, with low cost, product purity is high, the phosphorus doping hollow structure graphitized carbon ball making have pattern evenly, carbon shell has microvoid structure, carbon ball inside and has mesoporous carbon supporting structure, degree of graphitization is good, can be used for the various fields such as efficient catalytic conversion, energy storage and conversion, drugrelease, material fractionation by adsorption, atmosphere storage.
Embodiment
Below by embodiment in detail the present invention is described in detail.
embodiment 1:first by 4.0 grams of glucose, 0.21 gram of sodium stannate, 0.22 gram of iron(ic) chloride, mol ratio 25:1:1, is dissolved in 40 ml deionized water, moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 15 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 70 oafter C vacuum-drying 12 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 14 mol/L phosphatase 79s 0 oc soaks 6 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 224 nanometers, internal diameter 140 nanometers, the ratio of external diameter/internal diameter is 1.6, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 420 square metres every gram of specific surface area, greying ratio is 98.9%, and phosphorus content is 1.7%.
The soluble metallic salt adding is stanniferous metal-salt or the metal-salt that contains zinc, and the fusing point of this two classes salt is very low, during heat, easily from carbon shell, flows out, and forms and has mesoporous hollow carbon.
Adding catalyzer is in order to reduce graphitization temperature, to reach the object that reduces energy consumption.
In the situation that carbon source content is certain, can regulate by adjusting the ratio of soluble metallic salt the inner/outer diameter ratio of hollow ball, by regulating the ratio of catalyzer and the degree of graphitization that high temperature reduction temperature is adjusted final product.
By the content of phosphorus or the concentration of hydrothermal temperature or hydro-thermal time or pickling temperature or pickling time or phosphoric acid solution in adjusting carbon source kind or Hydrothermal Synthesis, control the content of phosphorus.
Control heat-up rate well, heat-up rate is too fast can not obtain the structure of wishing, heat-up rate is crossed slowly can cause energy dissipation.
The acidic solution adopting can not be to graphitized carbon material structure generation destruction, therefore concentration limit not, but had better not use strong solution, but concentration can not be too low, otherwise can cause removal efficiency decline.
embodiment 2:first by 4.0 grams of glucose, 0.21 gram of sodium stannate, 0.22 gram of iron(ic) chloride, mol ratio 25:1:1, is dissolved in the deionized water of 20 milliliters and the mixed solution of 20 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 3 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 5 mol/L phosphatase 79s 0 oc soaks 6 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 94 nanometers, internal diameter 71 nanometers, the ratio of external diameter/internal diameter is 1.3, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 521 square metres every gram of specific surface area, greying ratio is 97.8%, and phosphorus content is 7.2%.
embodiment 3:first by 4.0 grams of glucose, 0.21 gram of sodium stannate, 0.22 gram of iron(ic) chloride, mol ratio 25:1:1, is dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 9 hours is filtered reaction product, with 50 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 2 mol/L phosphatase 79s 0 oc soaks 6 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 125 nanometers, internal diameter 104 nanometers, the ratio of external diameter/internal diameter is 1.2, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 530 square metres every gram of specific surface area, greying ratio is 98.7%, and phosphorus content is 6.9%.
embodiment 4:first by 4.0 grams of glucose, 1.07 grams of sodium stannates, 1.08 grams of iron(ic) chloride, mol ratio 5:1:1, is dissolved in 40 milliliters containing the aqueous solution of 10 grams of sodium phosphates, moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 15 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 150 oafter C vacuum-drying 2 hours, then be placed in high temperature process furnances 700 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 1 mol/L sulfuric acid 75 oc soaks 12 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 123 nanometers, internal diameter 115 nanometers, the ratio of external diameter/internal diameter is 1.1, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 572 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 7.3%.
embodiment 5:first by 8.0 grams of glucose, 0.24 gram of sodium stannate, 0.24 gram of iron(ic) chloride mol ratio 50:1:1, be dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), after stirring, move into the hydrothermal reaction kettle of 50 milliliters, 160 oc reaction after 15 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of argon flow amount, naturally cool to after room temperature, by 15 mol/L phosphoric acid 70 oc soaks 6 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 117 nanometers, internal diameter 65 nanometers, the ratio of external diameter/internal diameter is 1.8, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 594 square metres every gram of specific surface area, greying ratio is 98.3%, and phosphorus content is 9.2%.
embodiment 6:first by 6.0 grams of glucose, 0.12 gram of sodium stannate, 0.36 gram of iron(ic) chloride, mol ratio 75:1:3, is dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 15 hours is filtered reaction product, with 80 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of argon flow amount, air-cooled to room temperature, by 15 mol/L nitric acid 80 oc soaks 2 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 200 nanometers, internal diameter 80 nanometers, the ratio of external diameter/internal diameter is 2.5, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 440 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 4.3%.
embodiment 7:first by 8.0 grams of glucose, 0.12 gram of sodium stannate, 0.6 gram of iron(ic) chloride, mol ratio 100:1:5, is dissolved in the deionized water of 20 milliliters and the mixed solution of 20 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 15 hours is filtered reaction product, with 100 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 900 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 1 mol/L perchloric acid 80 oc soaks 2 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 133 nanometers, internal diameter 45 nanometers, the ratio of external diameter/internal diameter is 3.0, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 498 square metres every gram of specific surface area, greying ratio is 97.7%, and phosphorus content is 5.1%.
embodiment 8:first by 10.0 grams of glucose, 0.1 gram of sodium stannate, 0.5 gram of iron(ic) chloride, mol ratio 150:1:5, is dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 15 hours is filtered reaction product, with 100 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 800 oc heating 2 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 5 mol/L hyperbromic acids 80 oc soaks 2 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 200 nanometers, internal diameter 67 nanometers, the ratio of external diameter/internal diameter is 3.0, pore size (0.7 nanometer, 1.1 nanometers) mesoporous size 4.7 nanometers, approximately 453 square metres every gram of specific surface area, greying ratio is 98.3%, phosphorus content is 3.2%.
embodiment 9:first by 4.0 grams of glucose, 0.19 gram of stannous sulfate, 0.29 gram of Tripotassium iron hexacyanide, mol ratio 25:1:1, is dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 8 hours is filtered reaction product, with 100 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 2 hours, then be placed in high temperature process furnances 1000 oc heating 2 hours, heat-up rate 5 oc per minute, 10 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 1 mol/L hydrochloric acid 80 oc soaks 2 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 224 nanometers, internal diameter 140 nanometers, the ratio of external diameter/internal diameter is 1.6, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 420 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 2.1%.
embodiment 10:first by 8.0 grams of sucrose, 0.17 gram of zinc acetate, 0.23 gram of Cobaltous diacetate, mol ratio 25:1:1, is dissolved in the deionized water of 40 milliliters, moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 6 hours is filtered reaction product, with 100 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 2 hours, then be placed in high temperature process furnances 1000 oc heating 1 hour, heat-up rate 10 oc per minute, 20 milliliters of per minutes of helium gas flow, naturally cool to after room temperature, by 5 mol/L phosphoric acid 80 oc soaks 2 hours except dezincify and cobalt, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 130 nanometers, internal diameter 85 nanometers, the ratio of external diameter/internal diameter is 1.5, carbon shell pore size (0.9 nanometer, 1.3 nanometers), mesoporous size 5.0 nanometers of carbon core, approximately 451 square metres every gram of specific surface area, greying ratio is 99.9%, and phosphorus content is 2.7%.
embodiment 11:first by 8.0 grams of sucrose, 0.13 gram of zinc chloride, 1.16 grams of nickelous acetates, mol ratio 25:1:5, is dissolved in 40 milliliters containing the aqueous solution of 15 grams of disodium-hydrogens, moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 4 hours is filtered reaction product, with 50 oc washed with de-ionized water is removed impurity.By reaction product 150 ounder C argon shield, be dried 1 hour, then be placed in high temperature process furnances 1200 oc heating 0.5 hour, heat-up rate 10 oc per minute, 40 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 2 mol/L phosphoric acid 80 oc soaks 1 hour except dezincify and nickel, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 100 nanometers, internal diameter 75 nanometers, the ratio of external diameter/internal diameter is 1.3, carbon shell pore size (0.9 nanometer, 1.3 nanometers), mesoporous size 5.0 nanometers of carbon core, approximately 518 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 4.3%.
embodiment 12:first by 13.4 grams of polyoxyethylene glycol, 0.1 gram of tin tetrachloride, 0.2 gram of iron(ic) chloride, mol ratio 50:1:2, is dissolved in the deionized water of 20 milliliters and the mixed solution of 20 milliliters of polyphosphoric acid, moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 4 hours is carried out reaction product centrifugal, with 100 oc washed with de-ionized water is removed impurity.By under reaction product nitrogen protection 150 odry 1 hour of C, then be placed in high temperature process furnances 1000 oc heating 1 hour, heat-up rate 10 oc per minute, 10 milliliters of per minutes of argon flow amount, naturally cool to after room temperature, by 1 mol/L hydrochloric acid 80 oc soaks 1 hour except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 141 nanometers, internal diameter 105 nanometers, the ratio of external diameter/internal diameter is 1.4, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 497 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 4.1%.
embodiment 13:first by 6.0 grams of polyvinyl alcohol, 0.29 gram of zinc sulfate, 2.11 grams of cobalt chloride, mol ratio 75:1:5, is dissolved in the deionized water of 10 milliliters and the mixed solution of 30 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 4 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 120 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 700 oc heating 2 hours, heat-up rate 5 oc per minute, 20 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 5 mol/L hydrochloric acid 50 oc soaks 2 hours except dezincify and cobalt, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 135 nanometers, internal diameter 110 nanometers, the ratio of external diameter/internal diameter is 1.2, carbon shell pore size (0.9 nanometer, 1.3 nanometers), mesoporous size 5.0 nanometers of carbon core, approximately 543 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 5.8%.
embodiment 14:first by 10.4 grams of polyvinyl alcohol, 1.12 grams of sodium stannates, 1.14 grams of iron(ic) chloride, mol ratio 25:1:1, is dissolved in the deionized water of 20 milliliters and the mixed solution of 20 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 230 after stirring oc reaction after 2 hours is filtered reaction product, with 80 oc washed with de-ionized water is removed impurity.By reaction product 120 oafter C vacuum-drying 2 hours, then be placed in high temperature process furnances 1000 oc heating 1 hour, heat-up rate 10 oc per minute, 50 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 12 mol/L phosphoric acid 80 oc soaks 1 hour except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 107 nanometers, internal diameter 85 nanometers, the ratio of external diameter/internal diameter is 1.3, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 631 square metres every gram of specific surface area, greying ratio is 98.9%, and phosphorus content is 15.3%.
embodiment 15:first by 11.3 grams of HMPA, 0.1 gram of sodium stannate, 2.0 grams of cobalt chloride, mol ratio 75:1:10, be dissolved in the deionized water of 30 milliliters and the mixed solution of 10 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), after stirring, move into the hydrothermal reaction kettle of 50 milliliters, 190 oc reaction after 2 hours is filtered reaction product, with 80 oc washed with de-ionized water is removed impurity.By reaction product 120 oafter C vacuum-drying 2 hours, then be placed in high temperature process furnances 1200 oc heating 1 hour, heat-up rate 10 oc per minute, 15 milliliters of per minutes of argon flow amount, naturally cool to after room temperature, by 3 mol/L hydrochloric acid 50 oc soaks 1 hour except detin and cobalt, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 133 nanometers, internal diameter 90 nanometers, the ratio of external diameter/internal diameter is 1.5, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 510 square metres every gram of specific surface area, greying ratio is 99.9%, and phosphorus content is 5.3%.
embodiment 16:first by 7.6 grams of glucose, 0.2 gram of sodium stannate, 0.4 gram of cobalt chloride, mol ratio 25:1:1, is dissolved in the deionized water of 30 milliliters and the mixed solution of 10 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 4 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 900 oc heating 2 hours, heat-up rate 5 oc per minute, 10 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by the acid of 5 mol/L phosphoric acid/mixed in hydrochloric acid, volume ratio 1:3,50 oc soaks 1 hour except detin and cobalt, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 143 nanometers, internal diameter 114 nanometers, the ratio of external diameter/internal diameter is 1.3, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 489 square metres every gram of specific surface area, greying ratio is 98.3%, and phosphorus content is 4.9%.
embodiment 17:first by 7.6 grams of glucose, 0.2 gram of sodium stannate, 2.0 grams of cobalt chloride, mol ratio 25:1:5, is dissolved in the deionized water of 30 milliliters and the mixed solution of 10 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 5 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 1300 oc heating 0.5 hour, heat-up rate 5 oc per minute, 15 milliliters of per minutes of nitrogen flow, circulating water is to room temperature, by 2 mol/L bromic acids 50 oc soaks 2 hours except detin and cobalt, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 148 nanometers, internal diameter 123 nanometers, the ratio of external diameter/internal diameter is 1.2, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 465 square metres every gram of specific surface area, greying ratio is 99.8%, and phosphorus content is 3.5%.
embodiment 18:first by 8.0 grams of polyoxyethylene glycol, 0.12 gram of sodium stannate, 0.13 gram of iron(ic) chloride, mol ratio 25:1:1, is dissolved in 40 milliliters containing the aqueous solution of 10 grams of SODIUM PHOSPHATE, MONOBASIC, moves into the hydrothermal reaction kettle of 50 milliliters, 160 after stirring oc reaction after 12 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 700 oc heating 3 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 4 mol/L hydrochloric acid 50 oc soaks 2 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 330 nanometers, internal diameter 103 nanometers, the ratio of external diameter/internal diameter is 3.2, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 375 square metres every gram of specific surface area, greying ratio is 98.3%, and phosphorus content is 1.3%.
embodiment 19:first by 8.0 grams of glucose, 0.33 gram of zinc acetate, 0.48 gram of iron(ic) chloride, mol ratio 25:1:1, is dissolved in the deionized water of 30 milliliters and the mixed solution of 10 milliliters of phosphoric acid (phosphoric acid concentration 52% ~ 54%), moves into the hydrothermal reaction kettle of 50 milliliters, 180 after stirring oc reaction after 4 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 700 oc heating 3 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 6 mol/L phosphoric acid 80 oc soaks 12 hours except dezincify and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 154 nanometers, internal diameter 107 nanometers, the ratio of external diameter/internal diameter is 1.4, carbon shell pore size (0.9 nanometer, 1.3 nanometers), mesoporous size 5.0 nanometers of carbon core, approximately 476 square metres every gram of specific surface area, greying ratio is 97.8%, and phosphorus content is 4.1%.
embodiment 20:first by 8.0 grams of sucrose, 0.14 gram of potassium stannate, 0.13 gram of iron(ic) chloride, mol ratio 50:1:1, is dissolved in the deionized water of 40 milliliters, moves into the hydrothermal reaction kettle of 50 milliliters, 170 after stirring oc reaction after 5 hours is filtered reaction product, with 25 oc washed with de-ionized water is removed impurity.By reaction product 100 oafter C vacuum-drying 4 hours, then be placed in high temperature process furnances 800 oc heating 3 hours, heat-up rate 5 oc per minute, 30 milliliters of per minutes of nitrogen flow, naturally cool to after room temperature, by 5 mol/L phosphatase 11s 60 oc soaks 4 hours except detin and iron, obtain the graphitized carbon ball that phosphorus doping has hollow structure, its external diameter 195 nanometers, internal diameter 124 nanometers, the ratio of external diameter/internal diameter is 1.6, carbon shell pore size (0.7 nanometer, 1.1 nanometers), mesoporous size 4.7 nanometers of carbon core, approximately 433 square metres every gram of specific surface area, greying ratio is 98.7%, and phosphorus content is 3.8%.
Discussion above and description are giving an example of the specific embodiment of the invention, but they do not mean that the restriction that is subject to this operation.According to the present invention, many improvement and change apparent to those skilled in the art.Claim comprises all equivalence descriptions, defines scope of the present invention.

Claims (1)

1. phosphorus doping has a controllable synthesis method for hollow structure graphitized carbon ball, it is characterized in that: this controllable synthesis method step is:
(1) hydro-thermal is prepared nucleocapsid structure carbon ball
Carbon source, soluble metallic salt, catalyzer are dissolved in solvent according to mol ratio, are stirred to completely and are transferred to hydrothermal reaction kettle Hydrothermal Synthesis after dissolving, by the sediment undergoes washing obtaining, filtration, dry, obtain primary products;
(2) high temperature reduction of carbon ball
In high temperature reaction stove by the primary products that obtain high temperature reduction under gas shield;
(3) prepare hollow plumbago carbon ball
The product that high temperature reduction is obtained is placed in after acidic solution immersion, cleans, filters, is dried, and obtains the graphitized carbon ball that phosphorus doping has hollow structure;
Carbon source in step (1) is for being wherein any one of glucose, sucrose, starch, polyvinyl alcohol, polyoxyethylene glycol, polystyrene, phenol, Resorcinol, toluene, PAPE, diethylene triamine pentamethylene phosphonic or HMPA;
Solvent in step (1) is wherein any one of deionized water, polyphosphoric acid or the phosphorous aqueous solution;
Soluble metallic salt in step (1) is stanniferous metal-salt or the metal-salt that contains zinc, dissolves in 20 ~ 100 othe pure water of C or acidity or basic solution; Wherein stanniferous metal-salt is wherein any one of sodium stannate, potassium stannate, stannous sulfate, stannous oxalate, tindichloride or tin tetrachloride; Containing the metal-salt of zinc, be wherein any one of zinc acetate, zinc iodide, zinc fluoride, zinc chloride, zinc sulfate, zinc phosphate or zinc nitrate;
The metal-salt that described catalyzer in step (1) is iron content or containing the metal-salt of cobalt or nickeliferous metal-salt, dissolves in 20 ~ 100 othe pure water of C or acidity or basic solution; The metal-salt of described iron content is wherein any one of iron(ic) chloride, ferric sulfate, iron nitrate, the Tripotassium iron hexacyanide, yellow prussiate of potash, yellow prussiate of soda, ferrous sulfate, iron protochloride, ferrous ammonium sulphate, ironic acetate, ferric fluoride, ferric ammonium citrate, ironic citrate or Hexacyanoferrate potassium; The described metal-salt containing cobalt is wherein any one of Cobaltous diacetate, rose vitriol, cobalt chloride, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES, ammonium cobaltous sulfate or sodium cobaltinitrite; Nickeliferous metal-salt is wherein any one of nickelous bromide, nickelous acetate, single nickel salt, nickelous chloride, nickel ammonium sulfate, nickelous nitrate, nickel sulfamic acid, nickelous fluoride or nickelous carbonate;
The proportioning of the carbon source in step (1), soluble metallic salt, catalyzer is mol ratio 5 ~ 300:1:0.1 ~ 50; In the situation that carbon source content is certain, by adjusting the ratio of soluble metallic salt, regulate the inner/outer diameter ratio of hollow ball, by regulating the ratio of catalyzer and the degree of graphitization that high temperature reduction temperature is adjusted final product;
Hydrothermal Synthesis temperature in step (1) is 100 ~ 300 ℃, 2 ~ 36 hours Hydrothermal Synthesis time;
In step (1) and step (3), for the reagent cleaning, be acetone or alcohol or 20 ~ 100 othe deionized water of C, purging method is for filtration or centrifugal, 60 ~ 300 ounder C vacuum-drying or protection of inert gas, be dried 1 ~ 24 hour; Wherein rare gas element is a kind of or its mixture in nitrogen, argon gas, helium, and proportioning is any, and wherein the purity of nitrogen, argon gas, helium is more than or equal to 99.99%;
Gas in step (2) is a kind of or its mixture in nitrogen, argon gas, helium, hydrogen, and proportioning is any, and wherein the purity of nitrogen, argon gas, helium, hydrogen is more than or equal to 99.99%, and gas flow is 5 ~ 500 ml/min;
High temperature reaction stove in step (2) can time variable control heats up, and passes into gas shield, adopts air-cooled or recirculated water or shallow-layer refrigerated water cooling; Sample is placed in to the middle section of high temperature reaction stove, High Temperature Furnaces Heating Apparatus is retort furnace, tube furnace or microwave oven, and cavity material is quartz, corundum, pottery, stainless steel or insulating brick;
In step (2), the temperature of high temperature reduction is 500 ~ 3200 oc, the recovery time is 0.1 ~ 36 hour, heat-up rate is per minute 0.1 ~ 50 oc;
Acidic solution is acid iodide, phosphoric acid, strong inorganic acid and mixing aqueous acid thereof in step (3), guarantees that pH is less than under 7 prerequisite to mix with arbitrary proportion; When carbon source and solvent are all not phosphorous, in the reagent of pickling, must have a kind of acid is phosphoric acid or the mixing solutions that contains phosphoric acid, and wherein the ratio of phosphoric acid is any and non-vanishing;
The product first high temperature reduction being obtained before soaking in step (3) and acidic solution are ultrasonic or be uniformly mixed to being uniformly dispersed 20 ~ 200 oin C temperature range, soak 0.1 ~ 48 hour, then mixed solution is diluted to cleaning and filtering, and filtrate recycling recycling.
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