CN107469760A - A kind of nanometer CaTiO3Powder adsorbent and its preparation method and application - Google Patents
A kind of nanometer CaTiO3Powder adsorbent and its preparation method and application Download PDFInfo
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- CN107469760A CN107469760A CN201710899520.4A CN201710899520A CN107469760A CN 107469760 A CN107469760 A CN 107469760A CN 201710899520 A CN201710899520 A CN 201710899520A CN 107469760 A CN107469760 A CN 107469760A
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- barium titanate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The present invention relates to nanometer CaTiO3Powder adsorbent and its preparation method and application, belong to nano material preparation and technical field of sewage；First using metatitanic acid and calcium hydroxide as raw material nano barium titanate calcium is prepared by hydrothermal synthesis method, Hydrothermal Synthesiss temperature is higher, and the nano barium titanate calcium pattern of formation is better, and particle diameter is 300 800nm in the present invention；When choosing is used as sorbent treatment heavy metal ion-containing waste water with the nano barium titanate calcium of perfect crystalline structure, excellent adsorption effect is shown；Nano barium titanate calcium preparation technology proposed by the present invention is simple, and reaction safety, energy consumption is low, low in raw material price；Nano barium titanate calcium heavy metal ionic adsorption amount is high, heavy metal ion that can be effectively in absorption effluent, possesses good economy, environment, social benefit.Had broad application prospects in terms of new material with waste water control.
Description
Technical field
The present invention relates to nanometer CaTiO3Powder adsorbent and its preparation method and application, refer in particular to one kind metatitanic acid and
Calcium hydroxide is prepared nano barium titanate calcium by hydrothermal synthesis method, inhaled by the use of nano barium titanate calcium as adsorbent as raw material
Heavy metal ion in attached water solution, belong to nano material preparation and technical field of sewage.
Technical background
1830s, people just have found perovskite, and its mineral main component is TiO by analysis2And CaO,
And contain other multiple elements.In the solid structure of perovskite, titanate is that research is more, including calcium titanate, metatitanic acid
Strontium, lead titanates, barium titanate etc..Calcium titanate (CaTiO3) it is a kind of most typical ABO3Type perovskite oxide, A positions are Ca2+, B
Position is Ti4+.The crystal structure of calcium titanate is the TiO connected by common vertex6Octahedra three-dimensional network composition, the less titanium of radius
Ion is located at TiO6Octahedral center, TiO is generally occupied by the larger calcium ion of radius6Ten disomes that octahedron is surrounded are empty
In chamber.
Calcium titanate is because with stable crystal structure and higher heat endurance and good chemical stability and life
Thing compatibility, there is very important meaning in terms of basic research and practical application.In biomedical sector, calcium titanate is applied
Apply and be implanted into human body on titanium or titanium alloy surface, the bond strength of titanium or titanium alloy and body bone tissue can be increased, reduce titanium and
Titanium alloy is implanted into the biologically inert of human body.Also there is document report multiple in titanium or titanium alloy surface coating hydroxyapatite-calcium titanate
Condensation material, the advantages of both the composite coating set hydroxyapatite and calcium titanate, there is excellent bone tissue binding ability, have
Beneficial to the characteristic of adhesion and the growth of Gegenbaur's cell, the characteristics of being firmly combined with being not easily disconnected from but also with titanium-based；In waste water control side
Face, there are some researches show the nano barium titanate calcium powder body being prepared by sol-gal process has stronger to the lead in sewage and cadmium
Adsorption capacity；In photocatalysis field, rung because calcium titanate is a kind of typical wide bandgap semiconductor, but with visible ray
The potentiality answered, the best pattern of ultraviolet radioactive photocatalysis performance may be selected, by making band gap narrow A positions, the doping of B positions, or
Calcium titanate is modified with materials such as graphenes, its photocatalysis performance can be improved.In these areas, calcium titanate is relative to it
The advantages of his material the good, function admirable of biocompatibility.
At present, preparing the method for nano barium titanate calcium has many kinds, such as a method of electrostatic spinning, template, sol-gal process, Gu
Phase reaction method, microwave heating method, the hot method of hydrothermal/solvent；Raw material mainly has calcium nitrate, calcium chloride, tetraisopropyl titanate etc.；Face
Cost of material is high, and mother liquor has organic pollution.
Heavy metal refers to that density is more than 5kg/m3Metal, in particular, refer in period of element atom ordinal number
Metal more than 24.Nowadays, sewage disposal and the management of water quality are one of important propositions in human lives.With urbanization
With the development of industrialization technology, cause the increase of debris accumulation amount all over the world and the increase of Heavy Metals in Waters.Heavy metal
Pollution is different with other orgnic compound pollutions, and heavy metal pollution concentration present in the environment is very low, it be not easy to by
The self purification of environment is degraded, and constantly can be accumulated in the environment on the contrary.Heavy metal can not only destroy cell membrane, influence enzyme
With the function of cell and damage DNA structure, can also be by digesting food the methods of, is enriched with human body.Once our human bodies
The heavy metal concentration of intake exceedes certain limit, it is possible to can cause the symptoms such as acute poisoning, the slow poisoning of human body.With much money
The toxicity of category is very strong, as long as containing micro heavy metal ion in water, it is possible to produce toxicity.General heavy metal produces toxicity
Concentration range be 1.0~10.0mg/L.The method of existing processing heavy metal is mainly physical chemistry, electrochemistry and advanced oxidation
Technique.Physical and chemical process includes membrane filtration, chemical precipitation, ion exchange, ultrafiltration and absorption.Absorption method refers to porosu solid
For adsorbent, one or more of pollutants in waste water are adsorbed, these pollutants, the mesh to purify water are removed or reclaim to reach
Method.Adsorbent has that adsorption capacity is strong, adsorption equilibrium concentration is low, chemical property is stable, the selection good ﹑ regenerating easilies of performance
Reuse, cost is cheap and source is wide etc. requires.Therefore, this patent uses cheap metatitanic acid, calcium hydroxide as original
Material, nano barium titanate calcium is prepared using hydrothermal synthesis method.Using nano barium titanate calcium as adsorbent, show good in the aqueous solution
The absorption property of heavy metal ion.
The content of the invention
It is an object of the invention to provide a kind of nano barium titanate calcium powder body adsorbent and preparation method thereof and absorption heavy metal
The method of ion.
Present invention firstly provides a kind of nano barium titanate calcium powder body adsorbent, the nano barium titanate calcium powder body adsorbent has titanium
Sour calcium crystal structure, particle diameter is between 300-800nm.
The present invention also provides a kind of preparation method of nano barium titanate calcium powder body adsorbent, and methods described is to pass through Hydrothermal Synthesiss
Method, using metatitanic acid and calcium hydroxide as raw material, 120-180 DEG C of hydrothermal temperature, the hydro-thermal reaction time 10-16h, prepare
Obtain calcium titanate.Specifically, the adsorbent is prepared as follows：
A certain amount of titanyl hydroxide starting material is positioned in plastic beaker, adds a certain amount of distilled water, is stirred for partially
Metatitanic acid slurry, certain density sodium hydroxide solution is added dropwise to neutrality；A certain amount of calcium hydroxide is dispersed in certain volume
In distilled water, it is added in metatitanic acid suspension, is transferred to after continuing stirring in hydrothermal reaction kettle.Hydro-thermal reaction is for a period of time
Afterwards, reaction product is taken out, is filtered with distilled water to neutrality, is positioned in baking oven and dries, preserve the nano barium titanate calcium powder prepared
Body.
The mass fraction of metatitanic acid is 36% (with TiO in wherein described titanyl hydroxide starting material2Meter), remaining is water.Industry
Level calcium hydroxide content 95%.NaOH is commercially available technical grade product, purity>96%.
The amount of wherein described titanyl hydroxide starting material is 55.6g, distilled water 450mL.
Wherein described naoh concentration is 2.5mol/L.
Wherein described Ca (OH)2Addition according to Ca (OH)2With Ca in metatitanic acid:Ti=1:The ratio system of 1 (mol ratio)
It is standby into slurry.
Wherein described hydrothermal temperature is 120-180 DEG C, the hydro-thermal reaction time 10-16h.
Dried in the drying box that wherein described drying is 80 DEG C.
The present invention also provides a kind of processing method of the heavy metal ion in nano barium titanate calcium powder body adsorbent absorption waste water,
Using nano barium titanate calcium as adsorbent, adsorption temp is 20 DEG C~50 DEG C, copper, lead in absorption waste water, cadmium heavy metal ion.
Specific embodiment is as follows：
Nano barium titanate calcium powder body adsorbent is taken to be added in certain density copper, lead, cadmium heavy metal ion solution, magnetic force stirs
Mix, sample at regular intervals, after filtering, be made into certain density solution, determined with atomic absorption spectrophotometer in solution
The content of heavy metal ion, by calculating, obtain the adsorbance of nano barium titanate calcium powder body absorption heavy metal ion.
Wherein the dosage of nano barium titanate calcium is 1g.
Wherein described heavy metal contaminants refer mainly to copper ion, lead ion, cadmium ion；Adsorption temp is 20 DEG C~50 DEG C,
Adsorption time is 5h.
Wherein described copper ion, copper ion, concentration of cadmium ions scope are 200-400mg/L, the concentration range of lead ion
For 700-900mg/L, heavy metal ion liquor capacity is 250mL.
Nano barium titanate calcium adsorbent of the present invention has the effect of absorption heavy metal ion, with the rise of temperature, inhales
The effect of attached heavy metal ion is better, and nano barium titanate calcium adsorbs copper ion, lead ion as adsorbent, and cadmium ion can reach respectively
To 69.7mg/g, 175.9mg/g, 65.9mg/g.
Advantages of the present invention is：The present invention is prepared first using metatitanic acid and calcium hydroxide as raw material by hydrothermal synthesis method
Nano barium titanate calcium is obtained, Hydrothermal Synthesiss temperature is higher, and the nano barium titanate calcium pattern of formation is better, particle diameter 300-800nm, this hair
Bright discovery, temperature have a major impact to the crystal structure of nano barium titanate calcium, and high temperature is advantageous to the formation of perfect calcium titanate crystal.Together
When, when the nano barium titanate calcium of the perfect crystalline structure of preparation is used as sorbent treatment heavy metal ion-containing waste water, show excellent
Different adsorption effect.The nano barium titanate calcium preparation technology that this patent proposes is simple, reaction safety, low in raw material price；With nanometer
Heavy metal ion in calcium titanate absorption effluent, advantages of good adsorption effect, heavy metal ion that can be effectively in absorption effluent, especially
Lead ion pollutes, and the present invention possesses good economy, environmental benefit, is had broad application prospects in terms of waste water control.
Brief description of the drawings
Fig. 1 is the electron-microscope scanning figure of the nano barium titanate calcium powder sample prepared by embodiment 1.
Fig. 2 is the electron-microscope scanning figure of the nano barium titanate calcium powder sample prepared by embodiment 4.
Fig. 3 is the electron-microscope scanning figure of the nano barium titanate calcium powder sample prepared by embodiment 6.
Embodiment
With reference to specific embodiments and the drawings, the present invention is described further.
Embodiment 1：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50mL distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 120 DEG C are reacted 12 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtain nano barium titanate calcium powder body and (be denoted as CaTiO3-1).Particle diameter 300nm, as shown in Figure 1.
Take 1g CaTiO3- 1 is added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 1.CaTiO3The adsorption capacity (adsorption time=5h) of -1 heavy metal ion
Embodiment 2：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50mL distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 140 DEG C are reacted 12 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained nano barium titanate calcium powder body, is denoted as CaTiO3-2.Particle diameter 340nm.
Take 1g CaTiO3- 2 are added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 2.CaTiO3The adsorption capacity (adsorption time=5h) of -2 heavy metal ions
Embodiment 3：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 160 DEG C are reacted 12 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained nano barium titanate calcium powder body, is denoted as CaTiO3-3.Particle diameter 375nm.
Take 1g CaTiO3- 3 are added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 3.CaTiO3The adsorption capacity (adsorption time=5h) of -3 heavy metal ions
Embodiment 4：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 180 DEG C are reacted 12 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained adsorbent are denoted as CaTiO3-4.Particle diameter 800nm, as shown in Figure 2.
Take 1g CaTiO3- 4 are added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 4.CaTiO3The adsorption capacity (adsorption time=5h) of -4 heavy metal ions
Embodiment 5：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 160 DEG C are reacted 10 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained adsorbent are denoted as CaTiO3-5.Particle diameter 355nm.
Take 1g CaTiO3- 5 are added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
The content of heavy metal ion, by calculating, obtains a nanometer CaTiO in absorption spectrophotometer measure solution3Adsorb heavy metal from
The adsorbance of son is as shown in the table.
Table 5.CaTiO3The adsorption capacity (adsorption time=5h) of -5 heavy metal ions
Embodiment 6：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 160 DEG C are reacted 16 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained adsorbent are denoted as CaTiO3-6.Particle diameter 395nm, as shown in Figure 3.
Take 1g CaTiO3- 6 are added to certain density 250mL copper (400mg/L), lead (900mg/L), cadmium (400mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 6.CaTiO3The adsorption capacity (adsorption time=5h) of -6 heavy metal ions
Embodiment 7：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 160 DEG C are reacted 14 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained adsorbent are denoted as CaTiO3-7.Particle diameter 380nm.
Take 1g CaTiO3- 7 are added to certain density 250mL copper (200mg/L), lead (700mg/L), cadmium (200mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 7.CaTiO3The adsorption capacity (adsorption time=5h) of -7 heavy metal ions
Embodiment 8：
Taking 55.6g titanyl hydroxide starting materials, (solids content is TiO2Meter, 20g, 0.25mol) it is positioned in 1L plastic beakers, add
Enter 450mL distilled water, magnetic agitation 15min, 2.5mol/L sodium hydroxide solutions are added dropwise to neutral (pH=7)；By 19.3g
(95%, 0.25mol) calcium hydroxide is dispersed in 50ml distilled water, is added in metatitanic acid suspension, continues to stir 2h.Transfer
Into hydrothermal reaction kettle, 160 DEG C are reacted 14 hours.Reaction product is taken out, is filtered with distilled water to neutrality, is positioned over 80 DEG C of baking ovens
Middle drying, obtained adsorbent are denoted as CaTiO3-7.Particle diameter 380nm.
Take 1g CaTiO3- 8 are added to certain density 250mL copper (300mg/L), lead (800mg/L), cadmium (300mg/
L) in heavy metal ion solution, magnetic agitation, sample at regular intervals, after filtering, be made into certain density solution, use atom
Absorption spectrophotometer measure solution in heavy metal ion content, through calculating, obtain nano barium titanate calcium absorption heavy metal from
The adsorbance of son is as shown in the table.
Table 8.CaTiO3The adsorption capacity (adsorption time=5h) of -8 heavy metal ions
Claims (10)
1. a kind of nano barium titanate calcium powder body adsorbent, it is characterised in that the nano barium titanate calcium powder body adsorbent has calcium titanate
Crystal structure, particle diameter is between 300-800 nm.
A kind of 2. preparation method of nano barium titanate calcium powder body adsorbent according to claim 1, it is characterised in that the suction
Attached dose is prepared as follows：
A certain amount of titanyl hydroxide starting material is positioned in plastic beaker, a certain amount of distilled water is added, is stirred for metatitanic acid
Slurry, certain density sodium hydroxide solution is added dropwise to neutrality；A certain amount of calcium hydroxide is dispersed in the distillation of certain volume
In water, it is added in metatitanic acid suspension, is transferred to after continuing stirring in hydrothermal reaction kettle；Hydro-thermal reaction for a period of time after, take
Go out reaction product, filtered with distilled water to neutrality, be positioned in baking oven and dry, preserve the nano barium titanate calcium powder body prepared.
A kind of 3. preparation method of nano barium titanate calcium powder body adsorbent according to claim 2, it is characterised in that
The mass fraction of metatitanic acid is 36 % in wherein described titanyl hydroxide starting material（With TiO2Meter）, remaining is water.
A kind of 4. preparation method of nano barium titanate calcium powder body adsorbent according to claim 3, it is characterised in that wherein institute
The amount for the titanyl hydroxide starting material stated is 55.6 g, and distilled water is 450 mL；Described naoh concentration is 2.5mol/L.
A kind of 5. preparation method of nano barium titanate calcium powder body adsorbent according to claim 3, it is characterised in that wherein institute
State Ca (OH)2Addition according to Ca (OH)2With Ca in metatitanic acid: Ti =1:The ratio of 1 (mol ratio) is prepared into slurry.
A kind of 6. preparation method of nano barium titanate calcium powder body adsorbent according to claim 3, it is characterised in that wherein institute
The hydrothermal temperature stated is 120 180 DEG C, and the hydro-thermal reaction time is 10 16 h.
A kind of 7. application of nano barium titanate calcium powder body adsorbent in the heavy metal ion in adsorbing waste water.
8. application according to claim 7, it is characterised in that in the nano barium titanate calcium powder body adsorbent absorption waste water
The adsorption temp of heavy metal ion is 20 DEG C ~ 50 DEG C.
9. application according to claim 7, it is characterised in that the heavy metal ion be copper ion, lead ion or cadmium from
Son.
10. application according to claim 7, it is characterised in that the copper ion, concentration of cadmium ions scope are 200-
400 mg/L, the concentration range of lead ion is 700-900 mg/L.
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| CN109500512A (en) * | 2018-12-17 | 2019-03-22 | 安徽升鸿电子有限公司 | A kind of novel welding material additive calcium titanate preparation process |
| CN110075784A (en) * | 2019-04-11 | 2019-08-02 | 江苏大学 | A kind of titanium-containing oxide heavy metal absorbent and preparation method thereof |
| CN112916014A (en) * | 2021-01-25 | 2021-06-08 | 吉林大学 | All-solid-state vector Z mechanism composite photocatalyst CaTiO3/Cu/TiO2Preparation method and application thereof |
| CN113522224A (en) * | 2021-07-02 | 2021-10-22 | 商洛学院 | Method for preparing calcium titanate adsorption material by using low-grade rutile concentrate |
| CN114177899A (en) * | 2021-10-25 | 2022-03-15 | 江苏大学 | Multi-shell CaTiO3Cube, preparation method and application |
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| CN110075784A (en) * | 2019-04-11 | 2019-08-02 | 江苏大学 | A kind of titanium-containing oxide heavy metal absorbent and preparation method thereof |
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| CN114177899A (en) * | 2021-10-25 | 2022-03-15 | 江苏大学 | Multi-shell CaTiO3Cube, preparation method and application |
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