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Preparation method and use of peach blossom biomass carbon-modified Bi2WO6 composite photocatalyst

A biomass carbon, composite light technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., to achieve stable performance, improve photocatalytic effect, and wide source. Effect

Active Publication Date: 2017-12-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there are few reports on photocatalytic materials composited with bismuth tungstate and biomass carbon

Method used

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  • Preparation method and use of peach blossom biomass carbon-modified Bi2WO6 composite photocatalyst
  • Preparation method and use of peach blossom biomass carbon-modified Bi2WO6 composite photocatalyst
  • Preparation method and use of peach blossom biomass carbon-modified Bi2WO6 composite photocatalyst

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preparation example Construction

[0042] A kind of Bi modified with peach and peanut substance carbon 2 WO 6 The preparation method of the composite photocatalyst, the steps are as follows:

[0043] Step 1. Peach blossom precursor treatment:

[0044] Pick up the withered peach blossoms, wash them with water to remove the dirt and dust on the surface, then wash with deionized water, dry at 60-80℃, smash them in a grinder, sieving, and obtain peach blossom powder for later use;

[0045] Step 2. Preparation of biomass carbon:

[0046] Take the peach blossom powder obtained in step 1 and add it to deionized water, seal and magnetically stir until it is evenly dispersed. After sonication, let it stand still, add a certain amount of NaOH solution, heat in a water bath, stir magnetically, and then dilute with H 2 SO 4 Adjust the pH of the solution to neutral and dry in vacuum to obtain a solid product, which is ground; then the ground solid product is placed in a porcelain boat and placed in a tube furnace N 2 Calcining in an...

Embodiment 1

[0054] In step 1, the mass of the picked peach blossoms is 200g.

[0055] In step 2, the amount of peach blossom powder used is 2g, the amount of deionized water used is 30mL, and the NaOH solution is 5mL; the NaOH and H 2 SO 4 The concentration is 1mol·L -1 . The calcination temperature is 500°C and kept at this constant temperature for 4h, and the heating rate is both 2.3°C·min -1 The temperature of the vacuum drying is 60°C.

[0056] In step 3, the Bi(NO 3 ) 3 ·5H 2 The amount of O is 1.0g, the amount of acetic acid used is 30mL; the amount of Na used 2 WO 4 ·2H 2 The amount of O is 0.3g, and the amount of deionized water is 50mL; the heating temperature is 180°C, and the heating time is 20h.

[0057] In step 4, the Bi 2 WO 6 The mass ratio to C is 4:1; the ultrasonic time is 2h, the stirring reaction time at the constant temperature is 3h, and the constant temperature temperature is 70°C.

[0058] Take 0.05g of Bi obtained in step 4 2 WO 6 / C added to 100mL contains 20mg L -1 In t...

Embodiment 2

[0060] In step 1, the mass of the picked peach blossoms is 200g.

[0061] In step 2, the amount of peach blossom powder used is 1g, the amount of deionized water used is 15mL, and the NaOH solution is 5mL; the NaOH and H 2 SO 4 The concentration is 1mol·L -1 . The calcination temperature is 450°C and kept at this constant temperature for 4h, and the heating rate is 1.0°C·min. -1 . The temperature of the vacuum drying is 70°C.

[0062] In step 3, the Bi(NO 3 ) 3 ·5H 2 The amount of O is 0.5g, the amount of acetic acid used is 15mL; the amount of Na used 2 WO 4 ·2H 2 The dosage of O is 0.1 g of deionized water and the dosage of 20 mL; the heating temperature is 180° C., and the heating time is 20 h.

[0063] In step 4, the Bi 2 WO 6 The mass ratio to C is 1:1; the ultrasound time is 1 h, the stirring reaction time at the constant temperature is 2 h, and the constant temperature temperature is 60°C.

[0064] Take 0.05g of Bi obtained in step 4 2 WO 6 / C added to 100mL contains 20mg L -1...

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Abstract

The invention belongs to the technical field of preparation of environmental materials, and provides a preparation method and a use of a peach blossom biomass carbon-modified Bi2WO6 composite photocatalyst. The preparation method comprises the following steps: 1, preprocessing a peach blossom precursor; 2, preparing biomass carbon; 3, preparing Bi2WO6; and 4, preparing Bi2WO6 / C. Carbon has a good conductivity, and the introduced carbon material and Bi2WO6 have synergistic effects to improve the photocatalysis effect, so the binary composite photocatalyst Bi2WO6 / C prepared in the invention has good photocatalysis activity.

Description

Technical field [0001] The invention belongs to the technical field of environmental material preparation, and specifically relates to a peach and peanut substance carbon-modified Bi 2 WO 6 Preparation method and application of composite photocatalyst. Background technique [0002] Dyes are widely used in food, medicine, printing and dyeing, and cosmetics industries. According to statistics, there are more than 100,000 kinds of dyes for commercial purposes. The annual output of dyes in the world is about 800,000 to 900,000 tons, while the annual output of dyes in my country is about 150,000 tons, ranking in the forefront of world dye production. With the widespread use of various dyes, 10% to 15% of the dyes are released into the environment during production and use. Most of these dyes are extremely stable and difficult to degrade naturally after entering the environmental waters, causing the chromaticity of the polluted waters to increase. Affect the amount of incident light, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31B01J37/08B01J37/10C02F1/30C02F101/30
CPCC02F1/30B01J23/31B01J37/084B01J37/10C02F2101/308B01J35/39
Inventor 于洋朱志李春香秦莹莹姚鑫汪涛马长畅
Owner JIANGSU UNIV
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