ReS2/CdS photocatalyst and preparation method and application thereof

A photocatalyst and photocatalytic technology, applied in the field of photocatalysis, can solve the problems of cost limitation and high scarcity of Pt, and achieve the effects of good stability, simple preparation method and easy control.

Inactive Publication Date: 2018-11-23
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Pt is limited due to its scarcity and high cost

Method used

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  • ReS2/CdS photocatalyst and preparation method and application thereof
  • ReS2/CdS photocatalyst and preparation method and application thereof
  • ReS2/CdS photocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A ReS 2 The preparation method of / CdS photocatalyst comprises the following steps:

[0035] (1) Dissolve 4.317 g of chromium acetate dihydrate in 30 mL of ethylenediamine, weigh 3.699 g of thiourea and dissolve in 30 mL of ethylenediamine, and slowly drop the latter into the former to obtain mixed solution A;

[0036] (2) Put the mixed solution A obtained in step (1) into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 160°C for 24 h;

[0037] (3) After the reaction is completed, wait for the hydrothermal reaction kettle to cool down to room temperature, then wash the yellow product cadmium sulfide in the hydrothermal reaction kettle with ethanol and deionized water three times respectively, dry and set aside;

[0038] (4) Weigh 400 mg of cadmium sulfide semiconductor material obtained in step (3), 10.02 mg of ammonium perrhenate, and 5.617 mg of thioacetamide, dissolve ammonium perrhenate and thioacetamide in 40 ml of distilled water, and stir f...

Embodiment 2

[0042] A ReS 2 The preparation method of / CdS photocatalyst comprises the following steps:

[0043] (1) Dissolve 4.317 g of chromium acetate dihydrate in 30 mL of ethylenediamine, weigh 3.699 g of thiourea and dissolve in 30 mL of ethylenediamine, and slowly drop the latter into the former to obtain mixed solution A;

[0044](2) Put the mixed solution A obtained in step (1) into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 160 °C for 20 h;

[0045] (3) After the reaction is completed, wait for the hydrothermal reaction kettle to cool down to room temperature, then wash the yellow product cadmium sulfide in the hydrothermal reaction kettle with ethanol and deionized water three times respectively, dry and set aside;

[0046] (4) Weigh 400 mg of cadmium sulfide semiconductor material obtained in step (3), 1.002 mg of ammonium perrhenate, and 0.561 mg of thioacetamide, dissolve ammonium perrhenate and thioacetamide in 40 ml of distilled water, and stir f...

Embodiment 3

[0050] A ReS 2 The preparation method of / CdS photocatalyst comprises the following steps:

[0051] (1) Dissolve 4.317 g of chromium acetate dihydrate in 30 mL of ethylenediamine, weigh 3.699 g of thiourea and dissolve in 30 mL of ethylenediamine, and slowly drop the latter into the former to obtain mixed solution A;

[0052] (2) Put the mixed solution A obtained in step (1) into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150 °C for 24 h;

[0053] (3) After the reaction is completed, wait for the hydrothermal reaction kettle to cool down to room temperature, then wash the yellow product cadmium sulfide in the hydrothermal reaction kettle with ethanol and deionized water three times respectively, dry and set aside;

[0054] (4) Weigh 400 mg of cadmium sulfide semiconductor material obtained in step (3), 5.01 mg of ammonium perrhenate, and 2.81 mg of thioacetamide, dissolve ammonium perrhenate and thioacetamide in 40 ml of distilled water, and stir fo...

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Abstract

The invention discloses a ReS2/CdS photocatalyst and a preparation method and application thereof. The preparation method of the ReS2/CdS photocatalyst comprises the following steps that 1, ammonium perrhenate, thioacetamide, hexamine and cadmium sulfide are weighed and dissolved in distilled water to obtain a mixed solution B; 2, the mixed solution B obtained in the step 1 is placed in a hydrothermal reactor for hydrothermal reaction; 3, after the reaction is completed, when the hydrothermal reactor is cooled to a room temperature, dark green ReS2/CdS in the hydrothermal reactor is subjectedto ethanol washing, washing and drying for use. According to the preparation method of the ReS2/CdS photocatalyst, the obtained ReS2/CdS photocatalyst greatly improves the performance of CdS semiconductor photocatalysis hydrogen production, a flexible ReS2 load is used as a promoter on the CdS surface, not only are the problems of the scarcity and high cost of Pt solved, but also CdS semiconductorphotocatalytic material electron transferring is accelerated, the carrier compound probability of a CdS semiconductor photocatalytic material is reduced, and a brand new way is provided for a CdS photocatalysis hydrogen production technology.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, in particular to a ReS 2 / CdS photocatalyst and its preparation method and application. Background technique [0002] In order to solve the global energy crisis and environmental pollution, the development and utilization of clean and renewable energy is a serious problem we are facing. Harnessing solar energy to split water into clean energy hydrogen via semiconductor photocatalysts is a promising technology based on renewable resources. Classical photocatalysts such as TiO 2 , has been extensively studied as an excellent photocatalyst due to its good stability, non-toxicity, and low cost. TiO 2 It has been confirmed that it can be excited under ultraviolet light, but ultraviolet light only accounts for 5% of sunlight, resulting in relatively low light utilization efficiency. Therefore, developing highly efficient photocatalysts is a serious problem facing all researchers. At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C01B3/04
CPCB01J27/04B01J35/004C01B3/042C01B2203/0277Y02E60/36
Inventor 叶立群马照宇王丽谢海泉
Owner NANYANG NORMAL UNIV
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