CN104549274A - Method for preparing composite nanometer titanium dioxide photocatalytic material - Google Patents
Method for preparing composite nanometer titanium dioxide photocatalytic material Download PDFInfo
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- CN104549274A CN104549274A CN201510004727.1A CN201510004727A CN104549274A CN 104549274 A CN104549274 A CN 104549274A CN 201510004727 A CN201510004727 A CN 201510004727A CN 104549274 A CN104549274 A CN 104549274A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention discloses a method for preparing a composite nanometer titanium dioxide photocatalytic material. The method is characterized by comprising the following steps: (1) preparing a solution, namely dissolving Cu ions (Cu2<+>) in water, and adding 5-20ml of 25 percent of ammonia water so as to form a complex, wherein the pH value of the solution is 10; (2) preparing a composite material, namely adding 0.01-0.05g of carbon material into the solution obtained in the step (1), stirring at room temperature for 2-5 hours, adding 1-2g of titanium dioxide powder, and continuously stirring for 2-5 hours; (3) drying, namely drying at the temperature of 100 DEG C for 5-12 hours; (4) calcining, namely roasting at the temperature of 350-500 DEG C for 1-10 hours; and (5) obtaining the nanoscale composite titanium dioxide photocatalytic material. The method has the advantages that the prepared composite nanometer titanium dioxide photocatalytic material is small in particle size and has the corresponding characteristics of visible light and excellent catalytic performance; and moreover, the method is easy to operate and the batch preparation repeatability is high, and the preparation cost is low.
Description
(1) technical field:
The present invention relates to a kind of its preparation process, particularly a kind of method preparing composite nanometer titanium dioxide photocatalysis material.
(2) background technology:
In recent years, the whole world faces the severe challenge of energy dilemma and environmental pollution.Photocatalysis technology has the features such as cost is low, environmental friendliness, has become the new hope of following new and high technology.In this context, people reveal keen interest to exploitation novel photocatalysis bill of material.
1972, Tokyo Univ Japan Fujishima and Honda studied discovery, utilizes TiO2 monocrystalline to carry out light-catalyzed reaction and water can be made to resolve into hydrogen and oxygen.This initiative working mark comprehensive startup that photoelectricity is applied to photocatalytic hydrogen production by water decomposition research.In the past in decades, people have carried out large quantity research at photocatalyst material development & application.For TiO2, disclose crystalline structure, surface hydroxyl free radical and oxygen defect to the influencing mechanism of quantum yield; The means such as element doping, composite semiconductor and photosensitive China are adopted to expand its photocatalytic activity to visible ray respective range; By can improve the separation efficiency of electron-hole pair at its surface deposition noble metal nano particles, improve its photocatalytic activity.Be that the photocatalysis technology of carrier has been successfully applied to wastewater treatment, purifying air, self-cleaning surface, the quick magnificent solar cell of dyestuff and multiple field such as antibacterial with TiO2.
Although people achieve very much progress to light-catalysed understanding and application, at present the large-scale industrial application instructing photocatalysis technology is not enough to the achievement in research of photocatalysis mechanism.On the other hand, the photoresponse narrow range of existing photocatalyst material, quantum conversion is low, and solar energy utilization ratio is low, is still the bottleneck of restriction photocatalyst material application.Finding and preparing high-quantum efficiency photocatalyst material is the prerequisite realizing light energy conversion.
(3) summary of the invention:
The object of the present invention is to provide a kind of method preparing composite nanometer titanium dioxide photocatalysis material, this preparation method's technique is simple, can obtain the corresponding photocatalyst material of visible ray.
Technical scheme of the present invention: a kind of method preparing composite nanometer titanium dioxide photocatalysis material, is characterized in that it comprises the following steps:
(1) configure solution: by soluble in water for Cu ion (Cu2+), add the ammoniacal liquor that 5-20ml concentration is 25%, form complex compound, solution ph is 10;
(2) prepare matrix material: in the solution that step (1) obtains, add 0.01-0.05g carbon material, stirred at ambient temperature 2 to 5 hours, and then add 1-2g titanium dioxide powder to it, continue stirring 2 to 5 hours;
(3) dry: dry 5-12 hour for 100 DEG C;
(4) calcine: 350-500 DEG C of roasting 1-10 hour;
(5) nano level composite photocatalysis material of titanium dioxide is obtained.
Superiority of the present invention is: the composite nanometer titanium dioxide photocatalysis material particle diameter of preparation is little, has the corresponding feature of visible ray, has good catalytic performance; This preparation method is simple to operate, and batch is prepared reproducible, and preparation cost is cheap.
(4) accompanying drawing illustrates:
Fig. 1 is composite nanometer titanium dioxide photocatalysis material catalytic decomposition water-based energy test pattern involved by the present invention.
(5) embodiment:
Embodiment 1: a kind of method preparing composite nanometer titanium dioxide photocatalysis material, is characterized in that it comprises the following steps:
1) take 0.336g cupric nitrate, add 10mL distilled water, after cupric nitrate dissolves completely, then add proper ammonia and cupric nitrate combination treatment, the amount adding ammoniacal liquor is 10 to regulate according to solution ph;
2) prepare matrix material: in the solution that step (1) obtains, add 0.01g carbon dust, stir two hours, and then add 1g titanium dioxide powder, continue stirring two hours;
3) dry: with thermostatic drying chamber 100 DEG C oven dry, 5 hours;
4) roasting: obtain composite nanometer titanium dioxide photocatalysis material in 2 hours with retort furnace 350 DEG C of roastings.
Embodiment 2: a kind of method preparing composite nanometer titanium dioxide photocatalysis material, is characterized in that it comprises the following steps:
1) take 0.336g cupric nitrate, add 10mL distilled water, after cupric nitrate dissolves completely, then add proper ammonia and cupric nitrate combination treatment, the amount adding ammoniacal liquor is 10 to regulate according to solution ph;
2) prepare matrix material: in the solution that step (1) obtains, add 0.02g carbon dust, stir three hours, and then add 2g titanium dioxide powder, continue stirring four hours;
3) dry: with thermostatic drying chamber 100 DEG C oven dry, 10 hours;
4) roasting: obtain composite nanometer titanium dioxide photocatalysis material in 1 hour with retort furnace 500 DEG C of roastings.
Photocatalytic hydrogen production by water decomposition performance test, light-catalyzed reaction is carried out in airtight vacuum glass system.Catalyzer (0.1 gram) is suspended in reaction soln under magnetic stirring.Before illumination, by the evacuating air in system, whole reaction is carried out in room temperature.Illumination mode is top formula irradiation, and light source is the xenon lamp that Japan produces, and radiation wavelength is greater than 300nm, and power is 300W, and operating voltage is 100V, and electric current is 20A.The gas produced is mixed by air cycle pump in vacuum system, and the amount of hydrogen is detected by online chromatography of gases.
As seen from Figure 1, just the catalyzer of titanium dioxide does not have photocatalysis performance substantially, and catalyzer prepared by example 1 and example 2 has good catalytic performance.
Claims (1)
1. prepare a method for composite nanometer titanium dioxide photocatalysis material, it is characterized in that it comprises the following steps:
(1) solution is configured: by Cu ion and Cu
2+soluble in water, add the ammoniacal liquor that 5-20ml concentration is 25%, form complex compound, solution ph is 10;
(2) prepare matrix material: in the solution that step (1) obtains, add 0.01-0.05g carbon material, stirred at ambient temperature 2 to 5 hours, and then add 1-2g titanium dioxide powder to it, continue stirring 2 to 5 hours;
(3) dry: dry 5-12 hour for 100 DEG C;
(4) calcine: 350-500 DEG C of roasting 1-10 hour;
(5) nano level composite photocatalysis material of titanium dioxide is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510004727.1A CN104549274A (en) | 2015-01-05 | 2015-01-05 | Method for preparing composite nanometer titanium dioxide photocatalytic material |
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| CN201510004727.1A CN104549274A (en) | 2015-01-05 | 2015-01-05 | Method for preparing composite nanometer titanium dioxide photocatalytic material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398302A (en) * | 2016-05-20 | 2017-11-28 | 伦慧东 | Micro-loading type titanium dioxide photocatalyst and preparation method thereof |
| CN107469762A (en) * | 2016-06-20 | 2017-12-15 | 伦慧东 | A kind of composite of micro-loading type titanium oxide and silica gel and preparation method thereof |
| CN107917351A (en) * | 2017-10-27 | 2018-04-17 | 中山市汉庭照明科技有限公司 | A kind of LED light bulbs and preparation method having except effect of formaldehyde |
| CN115820020A (en) * | 2022-11-23 | 2023-03-21 | 宁波慈溪生物医学工程研究所 | Copper-based antibacterial coating carrying titanium dioxide hollow spheres as well as preparation and application thereof |
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| CN1785502A (en) * | 2005-11-02 | 2006-06-14 | 刘应希 | Nano-composite composite material and its preparation method |
| CN103495431A (en) * | 2013-10-11 | 2014-01-08 | 常州大学 | Preparation method of titanium dioxide-loaded copper-doped silver phosphate catalyst |
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2015
- 2015-01-05 CN CN201510004727.1A patent/CN104549274A/en active Pending
Patent Citations (2)
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| CN1785502A (en) * | 2005-11-02 | 2006-06-14 | 刘应希 | Nano-composite composite material and its preparation method |
| CN103495431A (en) * | 2013-10-11 | 2014-01-08 | 常州大学 | Preparation method of titanium dioxide-loaded copper-doped silver phosphate catalyst |
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| 孙秀果等: ""分散剂对纳米TiO2 粉体分散性的影响"", 《支撑技术》 * |
| 杨俞等: ""纳米Cu 的高分散制备及其对Cu/TiO2光催化分解水制氢性能的影响"", 《分子催化》 * |
| 董永春编著: "《纺织助剂化学与应用》", 31 July 2007, 中国纺织出版社 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398302A (en) * | 2016-05-20 | 2017-11-28 | 伦慧东 | Micro-loading type titanium dioxide photocatalyst and preparation method thereof |
| CN107469762A (en) * | 2016-06-20 | 2017-12-15 | 伦慧东 | A kind of composite of micro-loading type titanium oxide and silica gel and preparation method thereof |
| CN107917351A (en) * | 2017-10-27 | 2018-04-17 | 中山市汉庭照明科技有限公司 | A kind of LED light bulbs and preparation method having except effect of formaldehyde |
| CN115820020A (en) * | 2022-11-23 | 2023-03-21 | 宁波慈溪生物医学工程研究所 | Copper-based antibacterial coating carrying titanium dioxide hollow spheres as well as preparation and application thereof |
| CN115820020B (en) * | 2022-11-23 | 2023-09-01 | 宁波慈溪生物医学工程研究所 | Antibacterial coating of copper-based titanium dioxide hollow sphere, and preparation and application thereof |
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