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a g-c 3 no 4 /bi 2 the w 6 /cus ternary composite photocatalyst and preparation method thereof

A ternary composite, photocatalyst technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. Advanced problems, to achieve the effect of simple process controllability of reaction conditions, excellent photocatalytic activity, and simple preparation process

Active Publication Date: 2021-10-15
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bi 2 WO 6 Composite with CuS to form a heterojunction to obtain a BWC4-1 composite photocatalyst with certain photocatalytic performance, but its utilization efficiency of visible light is not high, and the photocatalytic efficiency is not as good as some other new photocatalysts under full light conditions, which still cannot meet According to the needs of practical applications, in order to further improve its photocatalytic effect, some photon quantum dots can be loaded on its surface to broaden the photoresponse range and photoresponse intensity of the catalyst.

Method used

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  • a g-c <sub>3</sub> no <sub>4</sub> /bi <sub>2</sub> the w <sub>6</sub> /cus ternary composite photocatalyst and preparation method thereof
  • a g-c <sub>3</sub> no <sub>4</sub> /bi <sub>2</sub> the w <sub>6</sub> /cus ternary composite photocatalyst and preparation method thereof
  • a g-c <sub>3</sub> no <sub>4</sub> /bi <sub>2</sub> the w <sub>6</sub> /cus ternary composite photocatalyst and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] At room temperature, weigh 0.1g of BWC4-1 composite photocatalyst solid powder and put them in a beaker, pour 50ml of absolute ethanol, and then add 0.004g, the prepared g-C 3 N 4 Powder, after the pH of the solution was adjusted to 4 with nitric acid, the beaker was ultrasonically mixed for 20 minutes until the powder was completely dispersed, and the beaker containing the sample was placed in a constant temperature blast drying oven at 80°C until it was completely air-dried.

Embodiment 2

[0035] At room temperature, weigh 0.1g of BWC4-1 composite photocatalyst solid powder and place them in a beaker, pour 50ml of absolute ethanol, and then add 0.002g, the prepared g-C 3 N 4 Powder, after the pH of the solution was adjusted to 3 with nitric acid, the beaker was ultrasonically mixed for 20 minutes until the powder was completely dispersed, and the beaker containing the sample was placed in a constant temperature blast drying oven at 80°C until it was completely air-dried.

Embodiment 3

[0037] At room temperature, weigh 0.1g of BWC4-1 composite photocatalyst solid powder and place them in a beaker, pour 50ml of absolute ethanol, and then add 0.006g, the prepared g-C 3 N 4 Powder, after the pH of the solution was adjusted to 5 with nitric acid, the beaker was ultrasonically mixed for 20 minutes until the powder was completely dispersed, and the beaker containing the sample was placed in a constant temperature blast drying oven at 80°C until it was completely air-dried.

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Abstract

The invention discloses a g-C 3 N 4 / Bi 2 WO 6 / CuS ternary composite photocatalyst and preparation method thereof. g‑C in ternary composite photocatalysts 3 N 4 Distributed in Bi 2 WO 6 / CuS nanospheres (BWC4‑1), and form a heterojunction structure between the two phase interfaces. The preparation raw materials of the present invention are common inorganic chemical reagents, cheap and easy to obtain, the method and process are simple, the requirements for equipment are low, the heterojunction catalyst can be rapidly synthesized, and the process is simple and the reaction conditions are highly controllable. Prepared g‑C 3 N 4 / Bi 2 WO 6 / CuS photocatalyst has high crystallinity and no other impurities, g‑C 3 N 4 The addition of photon quantum dots broadens the absorption range of visible light and has better visible light catalytic activity than single BWC4‑1.

Description

technical field [0001] The invention belongs to the field of water and gas treatment technology and environmental functional materials, in particular to a g-C 3 N 4 / Bi 2 WO 6 / CuS ternary composite photocatalyst and preparation method thereof. Background technique [0002] Industrial organic wastewater such as medicine, printing and dyeing, and papermaking has a large amount of discharge and contains a large amount of refractory pollutants that can have long-term adverse effects on human health. It is a major pollution source that causes damage to the water ecological environment and seriously affects the utilization of water resources. Photocatalytic technology can use semiconductor photocatalytic materials to convert "green" solar energy into chemical energy or electrical energy, and effectively remove organic pollutants in water under mild reaction conditions. It is one of the most potential technologies to solve energy and environmental problems. . [0003] In rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J27/04B01J23/31B01J35/08B01J37/34C02F1/30
CPCB01J27/24B01J27/04B01J23/31B01J37/343C02F1/30C02F2305/10C02F2101/308B01J35/23B01J35/51B01J35/39
Inventor 郭家秀周后任景悅梁娟楚英豪李建军刘勇军
Owner SICHUAN UNIV