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.