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Hydrogen-production photocatalyst MoS2/ZnIn2S4 and preparation method thereof

A photocatalyst, znin2s4 technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as high cost and complex production process, and achieve improved hydrogen production performance, efficient reaction, effective Conducive to the effect of large-scale industrial production

Inactive Publication Date: 2013-05-01
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve these problems, the commonly used method is to support the noble metal Pt on the semiconductor, but Pt is a rare and expensive metal, which has the disadvantages of high cost and complicated production process.

Method used

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  • Hydrogen-production photocatalyst MoS2/ZnIn2S4 and preparation method thereof
  • Hydrogen-production photocatalyst MoS2/ZnIn2S4 and preparation method thereof
  • Hydrogen-production photocatalyst MoS2/ZnIn2S4 and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Composite photocatalyst MoS with efficient and stable photocatalytic hydrogen production 2 / ZIS preparation

[0024] First prepare ZnIn 2 S 4 : 0.136g ZnCl with a molar ratio of 1:2:2 2 , 0.586g InCl 3 4H 2 O and 1.5 g of thioacetamide (TAA) were added to 70 ml of H 2 In O, a transparent solution was obtained after stirring for 2 hours, and the solution was transferred to a 100ml hydrothermal kettle, and reacted at 120°C for 10 hours to obtain it; then the MoS 2 The precursor ammonium tetrathiomolybdate ((NH 4 ) 2 MoS 4 ))) wets the ZnIn obtained above 2 S 4 , dried in a vacuum oven at 60°C to obtain the precursor (NH 4 ) 2 MoS 4 / ZIS, place the sample in H2 Calcined at 350°C for 3h in S atmosphere to obtain MoS 2 / ZIS photocatalyst; MoS 2 The amount of loading varies from 0.3wt% to 5wt%. figure 1 Demonstrating the present invention with different contents of MoS 2 / X-ray diffraction (XRD) pattern of ZIS, all diffraction peaks belong to ZnIn 2 S 4 Dif...

Embodiment 2

[0026] MoS 2 The precursor of (NH 4 ) 2 MoS 4 in H 2 Calcined at 350 °C for 3 h in S atmosphere to obtain MoS 2 as comparison.

Embodiment 3

[0028] Composite photocatalyst MoS 2 / ZIS and ZnIn 2 S 4 And the photocatalytic hydrogen production performance comparison of 1wt%Pt / ZIS under visible light.

[0029] The resulting composite photocatalyst MoS 2 / ZIS is used for photolysis of water to produce hydrogen, weigh 50mg sample and add to 100ml containing 10.33g Na 2 S and 6.3g Na 2 SO 3 In the aqueous solution, after the photocatalytic hydrogen production system is evacuated, the light source is turned on for photocatalytic hydrogen production. The amount of photocatalytic hydrogen production was detected by chromatography (Fuli, China, TCD, argon as carrier gas, 0.5nm molecular sieve column). Composite photocatalyst MoS of the present invention 2 / ZIS and ZnIn 2 S 4 and 1wt% Pt / ZIS photocatalytic hydrogen production performance comparison under visible light as follows Figure 4 . It can be seen from the figure that 1.2wt% MoS 2 The hydrogen production rate of ZIS is about that of ZnIn 2 S 4 12 times th...

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Abstract

The invention discloses a hydrogen-production photocatalyst MoS2 / ZnIn2S4 and a preparation method and application thereof, and belongs to the technical fields of inorganic chemistry and photocatalysis. The photocatalyst is a multiplex photocatalyst of non TiO2 by that a non-precious metal MoS2 serving as a cocatalyst is loaded on ZnIn2S4; and the chemistry formula is MoS2 / ZnIn2S4. The hydrogen-production photocatalyst MoS2 / ZnIn2S4 and the preparation method thereof solve the problem that photocatalystic performance is improved by taking rare and expensive precious metal Pt as the cocatalyst in the prior art; the cheap non-precious metal MoS2 serving as the cocatalyst is loaded on ZnIn2S4 for the first time; the obtained multiplex photocatalyst has a high-efficiency photocatalysis hydrogen production effect; the preparation method is simple, convenient and easy and is beneficial to industrial promotion on a large scale.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry and photocatalysis, and specifically relates to a hydrogen-producing photocatalyst MoS 2 / ZnIn 2 S 4 And its preparation method and application. Background technique [0002] In the 21st century, energy crisis and environmental pollution have become two very serious problems facing the world. On the one hand, the world's energy consumption has increased by 50% in the past 20 years, and it is predicted that at the current rate of consumption, even the earth's abundant coal resources will be exhausted in the next 200 years. On the other hand, the CO released from the combustion of fossil resources dominated by coal, oil, and natural gas 2 , SO 2 And other harmful gases have brought many environmental pollution problems such as "greenhouse effect" and acid rain. Therefore, in order to realize the sustainable development of human beings, it is extremely urgent to develop clean and renewable en...

Claims

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Application Information

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IPC IPC(8): B01J27/051C01B3/04
CPCY02E60/364Y02E60/36
Inventor 李朝晖危亮陈旬刘平王绪绪付贤智
Owner FUZHOU UNIV
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