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Visible light driven photocatalysis hydrogen production catalyst as well as preparation method and application thereof

A technology of photocatalysis and catalyst, which is applied in the field of synthesis of composite photocatalytic materials, can solve problems such as difficult recycling and reuse, and achieve the effects of good visible light absorption, good application prospects, and high photocatalytic hydrogen production activity

Inactive Publication Date: 2017-02-01
HENAN NORMAL UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, these tantalum-containing polyacid Ta-POMs are as soluble in water as other polyacid compounds, difficult to recycle, and only UV active in solution state.

Method used

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  • Visible light driven photocatalysis hydrogen production catalyst as well as preparation method and application thereof
  • Visible light driven photocatalysis hydrogen production catalyst as well as preparation method and application thereof
  • Visible light driven photocatalysis hydrogen production catalyst as well as preparation method and application thereof

Examples

Experimental program
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Embodiment

[0019] Ta-POM-1 / TiO 2 Preparation of composite photocatalytic materials

[0020] 1. The precursor contains tantalum polyacid H 4 K 8 Na 8 [P 8 W 60 Ta 12 (H 2 O) 4 (OH) 8 o 236 ]·nH 2 O, marked as Ta-POM-1, was synthesized according to the literature: J. Am. Chem. Soc., 2012, 134, 19716−19721.

[0021] 2. Dissolve 10mL of isopropyl titanate in 30mL of isopropanol to obtain solution A; dissolve 1g of tantalum-containing polyacid Ta-POM-1 in 2mL of deionized water to obtain solution B; under ultrasonic conditions, dissolve solution B drop by drop Add it into solution A, continue to sonicate until the gel is formed after the dropwise addition, after aging for 12 hours, put the gel in an autoclave and raise the temperature to 150°C at a rate of 2°C / min for 12 hours, then cool to room temperature Finally, the sample was filtered and washed with 80°C deionized water for several times until the eluent had no absorption peak of polyacid in the UV-Vis absorption spectrum, a...

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Abstract

The invention discloses a visible light driven photocatalysis hydrogen production catalyst as well as a preparation method and application thereof. According to the technical scheme of the invention, tetraisopropyl titanate and tantalum-containing polyacid Ta-POMs-1 are adopted as precursors, the photocatalysis hydrogen production catalyst Ta-POM-1 / TiO2 is prepared by using a sol-gel method; and by optimizing and selecting types and amounts of dye molecules, types and amounts of sacrifice catalysts and amounts of the catalyst, the reaction conditions of catalysis hydrogen production with visible light, of the catalyst, can be optimized. Compared with parent TiO2 and POMs, a prepared Ta-POM-1 / TiO2 composite photocatalysis material is relatively good in visible light absorption and relatively high in photocatalysis hydrogen production activity, so that the visible light driven photocatalysis hydrogen production catalyst is relatively good in application prospect in the field of photocatalysis.

Description

technical field [0001] The invention belongs to the technical field of synthesis of composite photocatalytic materials, and in particular relates to a photocatalytic hydrogen production catalyst driven by visible light and its preparation method and application. Background technique [0002] Since entering the 21st century, while enjoying the comfort and convenience brought by the development of science and technology, human beings are facing two major survival crises: the depletion of fossil energy such as coal and oil; the gradual deterioration of the living environment, and the burning of fossil resources. released CO 2 , SO 2 And other harmful gases have brought many environmental problems such as the greenhouse effect and acid rain. Finding clean and renewable energy is an urgent need to achieve sustainable development and improve the quality of human life. The thermal efficiency of hydrogen is three times that of ordinary gasoline, and the combustion products have n...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J27/188C01B3/04
CPCC01B3/042B01J27/188B01J35/39Y02E60/36
Inventor 李书军彭青坡陈学年王若雅吴丹梅鸿飞
Owner HENAN NORMAL UNIV
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