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Preparation and application of efficient hydrogen production photo-catalyst MoS2-SrZrO3

A photocatalyst and catalyst technology, applied in physical/chemical process catalysts, hydrogen production, chemical instruments and methods, etc., can solve the problems of narrow light range, low hydrogen production rate of catalyst, poor stability, etc., and achieve low production cost, The effect of alleviating the energy crisis and longevity

Inactive Publication Date: 2015-01-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of this invention is to solve the problems of low hydrogen production rate, poor stability and narrow light range of the catalyst under ultraviolet light, and provide a photocatalytic MoS with high hydrogen production efficiency under ultraviolet light. 2 -SrZrO 3 and its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: take by weighing 1.164gSr (NO 3 ) 3 and 1.608 g ZrOCl 2 ·8H 2 O was dissolved in 12mol / L KOH solution, stirred at room temperature to obtain a white turbid suspension, then transferred to a hydrothermal kettle, heated at 200°C for 24h, cooled to room temperature, washed with deionized water, dilute acetic acid, and ethanol several times Wash and dry in vacuo. Take the prepared SrZrO 3 Dissolve 0.5g in 20mL of deionized water and 20mL of ethanol, and pipette 0.65mL of 0.005mol / LNa 2 MoO 4 2H 2 O solution and 0.90mL0.025mol / LCH 3 CSNH 2 After the solution was thoroughly mixed by ultrasonic stirring for 30 minutes, it was transferred to a hydrothermal kettle and heated to 180°C for 48 hours. After the reaction was completed, it was cooled to room temperature, and the product was washed with deionized water and ethanol in turn, and dried in vacuum to obtain MoS 2 / SrZrO 3 catalyst of light. 0.2g of SrZrO 3 and MoS 2 / SrZrO 3 Catalyst added to 0....

Embodiment 2

[0020] Weigh 1.387gSr(NO 3 ) 3 and 1.608 g ZrOCl 2 ·8H 2 O was dissolved in 30mol / L KOH solution, stirred at room temperature to obtain a white turbid suspension, then transferred to a hydrothermal kettle, heated at 180°C for 18h, cooled to room temperature, washed with deionized water, dilute acetic acid, and ethanol several times Wash and dry in vacuo. Take the prepared SrZrO 3 Dissolve 0.5g in 20mL of deionized water and 20mL of ethanol, and pipette 2mL of 0.005mol / LNa 2 MoO 4 2H 2 O solution and 4mL0.025mol / LCH 3 CSNH 2 The solution was stirred ultrasonically for 30 minutes and mixed thoroughly, then transferred to a hydrothermal kettle and heated to 200°C for 36 hours. After the reaction was completed, it was cooled to room temperature, and the product was washed with deionized water and ethanol in turn, and dried in vacuum to obtain MoS 2 / SrZrO 3 catalyst of light. 0.2gMoS 2 / SrZrO 3 Catalyst added to 0.250mol / L Na 2 SO 3 and 0.350mol / L Na 2 In the S so...

Embodiment 3

[0022] Weigh 2.328gSr(NO 3 ) 3 and 1.608 g ZrOCl 2 ·8H 2 O was dissolved in 20mol / L KOH solution, stirred at room temperature to obtain a white turbid suspension, then transferred to a hydrothermal kettle, heated at 200°C for 28h, cooled to room temperature, washed with deionized water, dilute acetic acid, and ethanol several times Wash and dry in vacuo. Take the prepared SrZrO 3 Dissolve 0.5g in 20mL of deionized water and 20mL of ethanol, and pipette 0.1mL of 0.005mol / LNa 2 MoO 4 2H 2 O solution and 0.5mL0.025mol / LCH 3 CSNH 2 After the solution was thoroughly mixed by ultrasonic stirring for 30 minutes, it was transferred to a hydrothermal kettle and heated to 220°C for 15 hours. After the reaction was completed, it was cooled to room temperature, and the product was washed with deionized water and ethanol in turn, and dried in vacuum to obtain MoS 2 / SrZrO 3 catalyst of light. 0.2gMoS 2 / SrZrO 3 Catalyst added to 0.250mol / L Na 2 SO 3 and 0.350mol / L Na 2 The...

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Abstract

The invention relates to preparation and application of a hydrogen production photo-catalyst MoS2-SrZrO3, aiming at solving the problems of low hydrogen production rate under ultraviolet light, instability and wide light response range of the catalyst. The catalyst is a heterojunction catalyst formed by MoS2 and SrZrO3. A preparation method of the catalyst comprises the following steps: adding SrOC12.8H2O and Sr(NO3)3 into a KOH solution, fully dissolving SrOC12.8H2O and Sr(NO3)3, putting the solution in a hydrothermal kettle for heating, washing and drying a product to obtain SrZrO3, then adding SrZrO3 a Na2MoO4.2H2O and CH3CSNH2 solution, ultrasonically stirring the solution, putting the solution in the hydrothermal kettle for heating, washing and drying the product to obtain the catalyst. The catalyst prepared by the method is environmentally friendly, and is high in hydrogen production rate which reaches 5.96mmol / L under ultraviolet light with wavelength being 365nm, and is long in service life, low in cost and suitable for large-scale production.

Description

technical field [0001] The invention relates to the preparation of hydrogen by hydrolysis under ultraviolet light, in particular to MoS 2 -SrZrO 3 Preparation and application of photocatalysts. Background technique [0002] In today's society, the main energy sources consumed by human beings are oil, coal and natural gas, etc., but these energy sources are non-renewable energy sources and are facing the danger of depletion. At the same time, a series of environmental problems caused by the consumption of this kind of energy have gradually aroused the close attention of countries all over the world. Therefore, the environment and energy are the major issues faced by human beings in the 21st century and need to be solved urgently. Finding an environmentally friendly and economical energy source has far-reaching and great significance for the sustainable development of human society and the environment. Hydrogen energy has the advantages of being renewable, wide source, stor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C01B3/06
CPCY02E60/36
Inventor 周建成田庆文刘佳慧王猛李乃旭邓金全
Owner SOUTHEAST UNIV
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