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Catalyst for oxygen production through water photolysis and preparation method thereof

A catalyst, a technology for photolysis of water, applied in the field of preparation of H.23WO3 quantum dots, can solve the problems of harsh experimental conditions, high cost, complex preparation procedures, etc.

Inactive Publication Date: 2021-05-28
HEIHE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of complex preparation procedures, high cost, expensive reagents and harsh experimental conditions of the existing catalysts for photolysis of water to produce oxygen, and provides a catalyst for photolysis of water to produce oxygen and its Preparation

Method used

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  • Catalyst for oxygen production through water photolysis and preparation method thereof
  • Catalyst for oxygen production through water photolysis and preparation method thereof
  • Catalyst for oxygen production through water photolysis and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: The preparation method of the catalyst for photolysis of water to produce oxygen according to the present embodiment is carried out according to the following steps:

[0034] 1. Preparation of mixed solution: Dissolve 0.36g tungsten chloride in 15mL deionized water to obtain tungsten chloride solution; dissolve 0.17g hydroquinone in 20mL ethanol to obtain hydroquinone solution; The hydroquinone solution was mixed, stirred at room temperature for 10 minutes, then 0.29 g of citric acid was added, and stirred for 30 minutes to obtain a mixed solution;

[0035] 2. Preparation of hydrated tungsten trioxide block: transfer the mixed solution to a 50 ml polytetrafluoroethylene autoclave, and put the polytetrafluoroethylene autoclave into an electric heating constant temperature blast drying oven with a temperature of 120°C for 15 hours; then centrifuge the reacted solution, rinse the solid phase with absolute ethanol and distilled water successively, and dry at 8...

Embodiment 2

[0045] Embodiment 2: The preparation method of the catalyst for photolysis of water to produce oxygen according to the present embodiment is carried out according to the following steps:

[0046] 1. Preparation of mixed solution: Dissolve 0.36g tungsten chloride in 15mL deionized water to obtain tungsten chloride solution; dissolve 0.14g phenol in 20mL ethanol to obtain phenol solution; mix tungsten chloride solution and phenol solution, Stir for 10min, then add 0.39g of sodium citrate, stir for 30min to obtain a mixed solution;

[0047] 2. Preparation of hydrated tungsten trioxide block: transfer the mixed solution to a 50 ml polytetrafluoroethylene autoclave, put the polytetrafluoroethylene autoclave into an electric heating constant temperature blast drying oven with a temperature of 140°C for 14 hours; then centrifuge the reacted solution, rinse the solid phase with absolute ethanol and distilled water successively, and dry at 90°C for 12 hours to obtain a hydrated tungste...

Embodiment 3

[0051] Embodiment 3: The preparation method of the catalyst for photolysis of water to produce oxygen according to the present embodiment is carried out according to the following steps:

[0052] 1. Preparation of mixed solution: Dissolve 0.36g tungsten chloride in 15mL deionized water to obtain tungsten chloride solution; dissolve 0.17g catechol in 20mL ethanol to obtain catechol solution; mix tungsten chloride solution with Hydroquinone solution was mixed, stirred at room temperature for 10 minutes, then 0.09 g of urea was added, and stirred for 30 minutes to obtain a mixed solution;

[0053] 2. Preparation of hydrated tungsten trioxide block: transfer the mixed solution to a 50 ml polytetrafluoroethylene autoclave, and put the polytetrafluoroethylene autoclave into an electric heating constant temperature blast drying oven with a temperature of 160°C for 13 hours; then centrifuge the reacted solution, rinse the solid phase with absolute ethanol and distilled water successiv...

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Abstract

The invention discloses a catalyst for oxygen production through water photolysis and a preparation method thereof, which relate to a catalyst for oxygen production through water photolysis and a preparation method thereof, which aim to solve the technical problems of complex preparation process, high cost, expensive reagent and harsh experimental conditions of the existing catalyst for oxygen production through water photolysis. The catalyst for oxygen production through water photolysis is H.23WO3 quantum dots. The preparation method comprises the following steps of 1, preparing a mixed solution from tungsten chloride, a phenolic compound and an auxiliary agent, 2, preparing a hydrated tungsten trioxide block, 3, preparing tungsten trioxide hydrate quantum dots, and 4, etching to obtain the catalyst for oxygen production through water photolysis. When the catalyst for oxygen production through water photolysis is used for oxygen production through water photolysis, under simulated sunlight irradiation, the oxygen production amount reaches up to 68-80 microfriction / g per hour, and stable oxygen production is not obviously attenuated within 20 hours. The method can be used in the fields of water decomposition oxygen production and photocatalytic degradation of organic matters.

Description

technical field [0001] The invention belongs to the technical field of preparation technology of inorganic nanometer photocatalytic materials, and relates to a H .23 WO 3 Preparation methods of quantum dots. Background technique [0002] In today's era, with the deterioration of the environment and the rapid depletion of natural resources, the energy crisis facing the world requires the chemical manufacturing industry to develop towards low energy consumption and the development of low-cost catalysts. In the modern chemical industry, sunlight-driven reactions are expected to replace traditional thermochemical reactions and greatly reduce energy consumption. As a very promising catalyst material, tungsten oxide has attracted extensive attention in recent years because of its excellent photocatalytic activity and low price. However, due to the wide band gap (2.7eV) of tungsten oxide, it cannot fully absorb sunlight, and the photogenerated carriers are easy to recombine, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B82Y30/00B82Y40/00C01G41/00C01B13/02A62D3/17A62D101/20
CPCB01J23/30C01G41/00B82Y40/00B82Y30/00C01B13/0207A62D3/17C01P2002/72C01P2004/03C01P2004/04C01P2002/01A62D2101/20B01J35/39
Inventor 杨玉蓉
Owner HEIHE UNIV
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