Graphene oxide/red phosphorus composite material as well as preparation method and application thereof

A composite material and graphene technology, applied in the field of photocatalysis, can solve the problems affecting the photocatalytic performance of red phosphorous and low crystallization degree, and achieve excellent photocatalytic performance, improved decolorization ability, and strong repeatability

Inactive Publication Date: 2018-02-23
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low crystallinity of red phosphorus, there are a large number of oxidized residual bonds on the surface, which will promote the recombination of photogenerated electron-hole pairs on the surface, which greatly affects the photocatalytic performance of red phosphorus.

Method used

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  • Graphene oxide/red phosphorus composite material as well as preparation method and application thereof
  • Graphene oxide/red phosphorus composite material as well as preparation method and application thereof
  • Graphene oxide/red phosphorus composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of Nanoscale Graphene Oxide / Red Phosphorous Composite

[0042] First, 10g of red phosphorus is added to the ethanol dispersion of 0.1g / L nano-graphene oxide at a concentration of 100ml, and after stirring evenly, the above-mentioned dispersion is placed in a constant temperature ultrasonic water bath for 10 hours under dark conditions (ultrasonic power 300W), maintain the temperature below 25 degrees during ultrasonic treatment.

[0043] Subsequently, the ultrasonically treated solution was centrifuged at a rate of 500 r / min, filtered to obtain a dark red solid, washed three times with ethanol, dried at 60°C for 5 hours in a blast drying oven, and cooled to room temperature naturally 0.1% doped graphene oxide / red phosphorus composite material can be obtained, denoted as rP / GO-0.1%.

Embodiment 2

[0045] Preparation of Nanoscale Graphene Oxide / Red Phosphorous Composite

[0046] First, the concentration of 10g red phosphorus is added to the ethanol dispersion of 0.5g / L nano-graphene oxide in the concentration of 100ml, and after stirring evenly, the above-mentioned dispersion is placed in an ultrasonic water bath for 8 hours under dark conditions (ultrasonic power: 300W), maintain the temperature below 25 degrees during ultrasonic treatment.

[0047] Subsequently, the ultrasonically treated solution was centrifuged at a rate of 500 r / min, filtered to obtain a dark red solid, washed three times with ethanol, dried at 60°C for 5 hours in a blast drying oven, and cooled to room temperature naturally 0.5% doped graphene oxide / red phosphorus composite material can be obtained, denoted as rP / GO-0.5%.

Embodiment 3

[0049] Preparation of Nanoscale Graphene Oxide / Red Phosphorous Composite

[0050] First, 10g red phosphorus is added to the concentration of 100ml in the ethanol dispersion of nano-graphene oxide of 1 g / L, and after stirring evenly, the above-mentioned dispersion is placed in an ultrasonic water bath for 8 hours under dark conditions (ultrasonic power: 300W), maintain the temperature below 25 degrees during ultrasonic treatment.

[0051] Subsequently, the ultrasonically treated solution was centrifuged at a rate of 500 r / min, filtered to obtain a dark red solid, washed three times with ethanol, dried at 60°C for 5 hours in a blast drying oven, and cooled to room temperature naturally 1% doped graphene oxide / red phosphorus composite material can be obtained, denoted as rP / GO-1%.

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PUM

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Abstract

The invention provides a graphene oxide / red phosphorus composite material as well as a preparation method and application thereof. According to the graphene oxide / red phosphorus composite material, red phosphorus is modified by utilizing nano graphene oxide, and the nano graphene oxide is supported on the red phosphorus. The graphene oxide / red phosphorus composite material has excellent photocatalytic performance, and can be used as a photocatalyst to effectively decolour a methyl orange solution under visible light, wherein the decolorization ability is remarkably improved compared with thatof a single red-phosphorus photocatalyst. Further, the method also provides a simple and feasible route for preparing the graphene oxide / red phosphorus composite material; and the operation of the preparation method is simple, the repeatability is strong, and the composite material can be suitable for industrialized production and preparation.

Description

technical field [0001] The invention relates to the field of photocatalysis, more specifically, to a graphene oxide / red phosphorus composite material and its preparation method and application. Background technique [0002] In recent years, countries all over the world are facing severe challenges of energy shortage and environmental pollution. It is urgent to seek a new clean energy and effective environmental control technology. Semiconductor photocatalysis technology provides us with an important method to directly convert solar energy and efficiently control environmental pollution. Driven by sunlight, semiconductor photocatalysts can efficiently and directly degrade organic pollutants, achieving the goal of purifying the environment without additional energy. At present, this technology seems to be an ideal method that can fundamentally solve the energy crisis and environmental pollution, and has great application development prospects and research value. [0003] In ...

Claims

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Application Information

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IPC IPC(8): B01J27/14B01J35/02C02F1/30C02F101/38
CPCC02F1/30B01J27/14C02F2101/38C02F2305/10B01J35/40B01J35/39
Inventor 陈志鸿王新马歌吕海钦
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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