CN101879443A - Novel high-efficiency strontium borate-like photocatalyst - Google Patents
Novel high-efficiency strontium borate-like photocatalyst Download PDFInfo
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- CN101879443A CN101879443A CN 201010219274 CN201010219274A CN101879443A CN 101879443 A CN101879443 A CN 101879443A CN 201010219274 CN201010219274 CN 201010219274 CN 201010219274 A CN201010219274 A CN 201010219274A CN 101879443 A CN101879443 A CN 101879443A
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- strontium
- borate
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Abstract
The invention discloses a novel high-efficiency strontium borate-like photocatalyst and a preparation method thereof and aims to prepare methane by reducing carbon dioxide and water through photocatalysis technology. In the photocatalyst, strontium salt, a boron-containing compound, citric acid or citrate and alcohols are used as precursors. The photocatalysis efficiency of reducing the carbon dioxide and water to prepare the methane of the high-activity strontium borate-like photocatalyst prepared by a sol-gel method is superior to that of a TiO2 photocatalyst (P25, which is known as the photocatalyst with higher photocatalysis efficiency at present). The novel high-efficiency strontium borate-like photocatalyst has the advantages of high dispersibility, high photocatalysis activity, simple preparation process, easy operation, low requirements on equipment and the like and has wide application prospect and development potential in the fields of emission reduction of carbon dioxide, recycling of energy, environmental science and the like.
Description
[technical field]
The present invention develops a kind of " novel efficient class strontium borate photochemical catalyst ", and the efficient that the photocatalytic reduction of carbon oxide of this catalyst and water prepare methane has surpassed TiO
2(P25).The invention belongs to the photocatalysis technology field, provide a kind of high efficiency photochemical catalyst for utilizing photocatalysis technology reducing carbon dioxide and water system methane.
[background technology]
The new method that world today's energy crisis and ecological deterioration impel people to seek cleaning, reproducible new forms of energy and administer environment.In recent years, the research to catalysis material has obtained remarkable progress.1972, Fujishima and Honda utilized titanium dioxide (TiO
2) experiment of monocrystalline electrode photolysis water hydrogen, started the heterogeneous light-catalysed research field of semiconductor.TiO
2Have the high characteristics of good stability and photocatalysis efficiency, but utilize TiO
2Photocatalytic reduction of carbon oxide and water prepare methane, still exist photocatalysis efficiency than problems such as low and depollution of environment effect differences, do not reach requirement of actual application as yet.
The present invention develops a kind of " novel efficient class strontium borate photochemical catalyst ", this catalyst has characteristics such as good dispersion, stability are strong, photocatalysis efficiency height, utilize this catalyst photocatalytic reduction of carbon oxide and water to prepare methane, its photocatalysis efficiency far surpasses TiO
2(P25).At present, the class strontium borate does not appear in the newspapers in the research work of photocatalytic reduction of carbon oxide and water system methane, and this achievement in research will be for designing, prepare new and effective photochemical catalyst and opening up new direction in the application in energy environment field.
[summary of the invention]
The present invention is a presoma with strontium salt, boron-containing compound, citric acid or citrate and many alcohols, adopts Prepared by Sol Gel Method a kind of " novel efficient class strontium borate photochemical catalyst ".The invention has the advantages that this photochemical catalyst good dispersion, have very high photocatalysis efficiency, its photocatalysis efficiency far surpasses TiO
2(P25).
[description of drawings]
The X ray diffracting spectrum of Fig. 1 embodiment 1,2,3;
Class strontium borate and P25 photochemical catalyst photocatalytic reduction of carbon oxide and water prepare the concentration time curve of methane among Fig. 2 embodiment 1,2,3;
Below in conjunction with specific embodiments and the drawings the present invention is described further, and specifies photocatalysis effect of the present invention.
[specific embodiment]
Concrete preparation method of the present invention is as follows: at normal temperatures, citric acid or citrate are joined diluent, the mass ratio of citric acid or citrate and diluent is 1: 5～1: 15; Under vigorous stirring, added strontium salt and boron-containing compound successively every 5～10 minutes, the mol ratio of citric acid or citrate and strontium salt is 4: 0.5～4: 2, the mol ratio of citric acid or citrate and boron-containing compound is 4: 1～4: 3; Stir, add many alcohols at last, citric acid or citrate and many alcohols mol ratio are 4: 4～4: 8,80 ℃ then～100 ℃ water-baths 4～10 hours, obtain mixed sols, with mixed sols at 90 ℃～150 ℃ oven dry, grind into powder, in air atmosphere, calcined 3.0～5.0 hours for 500 ℃～800 ℃, make " novel efficient class strontium borate photochemical catalyst ".
In the above preparation process, described strontium salt can be one or more mixing in strontium chloride, strontium nitrate or the strontium acetate etc.
Described many alcohols can be any in ethylene glycol, the polyethylene glycol etc.
Described boron-containing compound can be any in boric acid, borax, Boratex, potassium borate, ammonium borate, metaboric acid, kodalk, potassium metaborate, tetraboric acid, sodium tetraborate or the dipotassium tetraborate.
Described diluent is any or several mixing in high purity water, absolute ethyl alcohol, absolute methanol, glacial acetic acid or the formic acid; Preferred high purity water.
The evaluation method of photocatalysis efficiency is: the mercury lamp with 35W is a light source, and radiation wavelength is＞253.7nm; The aqueous solution is 125ml; Catalyst amount is 125mg; Naoh concentration is 0.2mol/L; Feed CO in the solution before the reaction
2Gas 45min, flow is 0.3L/min, and solution is reached capacity; Solution concentration in the magnetic agitation maintenance system; Water-bath keeps the temperature balance of system; Extract 0.4ml gas every 2h, analyze the end product methane concentration, demarcate the photocatalysis efficiency of catalyst with gas chromatograph.End product methane content height shows catalyst photocatalysis efficiency height.
For a better understanding of the present invention, the present invention is described in further detail, but the scope of protection of present invention is not limited to the represented scope of embodiment below in conjunction with embodiment.
Embodiment 1
Get a certain amount of Sr (NO
3)
2Solid as solvent, is mixed with the Sr (NO of 1mol/L with high purity water
3)
2Solution.Get the 85ml high purity water, at room temperature stir, add 7.6856g citric acid (0.04mol) (analyzing pure) and 10ml Sr (NO successively
3)
2Solution stirred 5 minutes; With 1.2366g boric acid (0.02mol) adding system, fully stir and it was dissolved fully in 10 minutes; Add 3.3ml ethylene glycol (0.06mol), fully stir and it was dissolved fully in 10 minutes; 90 ℃ of water-bath evaporations 4 hours, up to becoming colloidal sol fully; Colloidal sol 120 ℃ of oven dry in baking oven were become gel in 10 hours; Grind into powder is calcined 4.5h in 500 ℃ of air, makes nanometer class strontium borate photochemical catalyst (sample A).With the evaluation method of above-mentioned photocatalysis efficiency, 10 hours methane-generated quantities of photocatalysis are 2.44 * 10
-5Mol/L, and under the equal conditions, TiO
2(P25) methane-generated quantity is 2.42 * 10
-5Mol/L.
Experiment condition, step are with embodiment 1, and changing calcining heat is 600 ℃, the nanoscale strontium borate photochemical catalyst (sample B) that makes, and with above-mentioned photocatalytic activity evaluation method, 10 hours methane-generated quantities of photocatalysis are 5.63 * 10
-5Mol/L is TiO
2(P25) 2.33 times.
Embodiment 3
Experiment condition, step are with embodiment 1, and changing calcining heat is 700 ℃, makes nanometer class strontium borate photochemical catalyst (sample C sees), and with above-mentioned photocatalytic activity evaluation method, under UV-irradiation, 10 hours methane-generated quantities of photocatalysis are 3.77 * 10
-5Mol/L is TiO
2(P25) 1.56 times.
Above example shows that class strontium borate photochemical catalyst photocatalytic reduction of carbon oxide and water system methane have high photocatalysis efficiency.
Claims (6)
1. the present invention develops a kind of " novel efficient class strontium borate photochemical catalyst ", it is characterized in that: with strontium salt, boron-containing compound, citric acid or citrate and many alcohols is presoma, adopts Prepared by Sol Gel Method to go out high activity class strontium borate nano-photocatalyst.This photochemical catalyst has characteristics such as good dispersion, stability are strong, photocatalysis efficiency height, and its reducing carbon dioxide and water prepare the methane photocatalysis efficiency and surpassed TiO
2(P25) photochemical catalyst.
2. the method for preparation according to claim 1 " novel efficient class strontium borate photochemical catalyst ", its feature is as follows: at normal temperatures, citric acid or citrate are joined diluent, and the mass ratio of citric acid or citrate and diluent is 1: 5～1: 15; Under vigorous stirring, every 5～10 minutes, add strontium salt and boron-containing compound successively, the mol ratio of citric acid or citrate and strontium salt is 4: 0.5～4: 2, citric acid or citrate and boron-containing compound mol ratio are 4: 1～4: 3; Stir, add many alcohols at last, citric acid or citrate and many alcohols mol ratio are 4: 4～4: 8, then 80 ℃～100 ℃ water-baths 4～10 hours, obtain mixed sols, mixed sols is dried into gel, grind into powder through 90 ℃～150 ℃, in air atmosphere, calcined 3.0～5.0 hours for 500 ℃～800 ℃, make novel high-activity class strontium borate nano-photocatalyst.
3. " novel efficient class strontium borate photochemical catalyst " according to claim 1 and 2 is characterized in that: described strontium salt can be any in strontium chloride, strontium nitrate or the strontium acetate etc.
4. " novel efficient class strontium borate photochemical catalyst " according to claim 1 and 2 is characterized in that: described boron-containing compound can be any in boric acid, borax, Boratex, potassium borate, ammonium borate, metaboric acid, kodalk, potassium metaborate, tetraboric acid, sodium tetraborate or the dipotassium tetraborate.
5. " new and effective class strontium borate photochemical catalyst " according to claim 1 and 2 is characterized in that: described many alcohols can be any in ethylene glycol, the polyethylene glycol etc.
6. " novel efficient class strontium borate photochemical catalyst " according to claim 2 is characterized in that: described diluent is any or several mixing in high purity water, absolute ethyl alcohol, absolute methanol, glacial acetic acid or the formic acid; Preferred high purity water.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921423A (en) * | 2012-04-26 | 2013-02-13 | 南开大学 | Efficient nickel/nickel oxide/nickel borate composite photocatalyst |
| CN104437505A (en) * | 2014-12-28 | 2015-03-25 | 桂林理工大学 | Visible light responded photocatalyst LiFeB2O5 and preparation method thereof |
| CN104492419A (en) * | 2014-12-28 | 2015-04-08 | 桂林理工大学 | Visible light responding photocatalyst LiBi3B3O11 and preparation method thereof |
| CN104525208A (en) * | 2014-12-28 | 2015-04-22 | 桂林理工大学 | Photocatalyst LiFe2B3O8 with visible light response and preparation method thereof |
| CN104645992A (en) * | 2014-11-30 | 2015-05-27 | 桂林理工大学 | Photocatalyst Li3Cu2BO5 with visible-light response and preparation method thereof |
| CN104649364A (en) * | 2013-11-22 | 2015-05-27 | 中国科学院新疆理化技术研究所 | Method for application of sodium vanadium borate in oxidation degradation of chlorophenol contaminants under photocatalysis |
| CN108946751A (en) * | 2018-07-13 | 2018-12-07 | 湘潭大学 | A kind of preparation method and application of six oxygen of boron |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301619A (en) * | 2008-07-03 | 2008-11-12 | 南开大学 | Method for preparing high efficiency metallic, non-metallic ion co-doped nano-TiO2 visible-light responsive photocatalyst |
-
2010
- 2010-07-07 CN CN 201010219274 patent/CN101879443B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301619A (en) * | 2008-07-03 | 2008-11-12 | 南开大学 | Method for preparing high efficiency metallic, non-metallic ion co-doped nano-TiO2 visible-light responsive photocatalyst |
Non-Patent Citations (3)
| Title |
|---|
| 《应用化学》 20090630 张林进等 水合硼酸锶的制备及脱水热分解动力学 第697页 1-6 第26卷, 第6期 2 * |
| 《无机材料学报》 20041130 王海英等 Eu3+掺杂的硼酸锶系列荧光体的合成及其发光性能 第1368-1369页 1-6 第19卷, 第6期 2 * |
| 《高等学校化学学报》 20011030 潘峰等 四硼酸锶SrB407的晶体结构及其非线性光学性质 第154页 1-6 第22卷, 第10期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921423A (en) * | 2012-04-26 | 2013-02-13 | 南开大学 | Efficient nickel/nickel oxide/nickel borate composite photocatalyst |
| CN104649364A (en) * | 2013-11-22 | 2015-05-27 | 中国科学院新疆理化技术研究所 | Method for application of sodium vanadium borate in oxidation degradation of chlorophenol contaminants under photocatalysis |
| CN104649364B (en) * | 2013-11-22 | 2016-03-16 | 中国科学院新疆理化技术研究所 | The method of vanadium Sodium Tetraborate photocatalytic oxidation degradation chlorophenol pollutant |
| CN104645992A (en) * | 2014-11-30 | 2015-05-27 | 桂林理工大学 | Photocatalyst Li3Cu2BO5 with visible-light response and preparation method thereof |
| CN104437505A (en) * | 2014-12-28 | 2015-03-25 | 桂林理工大学 | Visible light responded photocatalyst LiFeB2O5 and preparation method thereof |
| CN104492419A (en) * | 2014-12-28 | 2015-04-08 | 桂林理工大学 | Visible light responding photocatalyst LiBi3B3O11 and preparation method thereof |
| CN104525208A (en) * | 2014-12-28 | 2015-04-22 | 桂林理工大学 | Photocatalyst LiFe2B3O8 with visible light response and preparation method thereof |
| CN108946751A (en) * | 2018-07-13 | 2018-12-07 | 湘潭大学 | A kind of preparation method and application of six oxygen of boron |
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| CN101879443B (en) | 2013-07-17 |
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