Preparation method for bismuth oxyiodide/graphene oxide compound visible light catalytic material

A graphene composite, bismuth oxyiodide technology, applied in the field of visible light catalytic material preparation, can solve the problems of complex photocatalyst operation, unsuitable for large-scale production, and high equipment requirements, achieve large-scale production, improve photocatalysis Active, low-cost effect

Inactive Publication Date: 2013-02-27
HARBIN NORMAL UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the complex photocatalyst prepared by the existing method, which has complex operation, long periodicity, high equipment req

Method used

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  • Preparation method for bismuth oxyiodide/graphene oxide compound visible light catalytic material

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specific Embodiment approach 1

[0008] Specific embodiment 1: This embodiment is a preparation method of bismuth oxyiodide / graphene oxide composite visible light catalytic material, which is specifically completed according to the following steps: 1. Preparation of graphene oxide dispersion: first, graphite powder is used as raw material Graphite oxide is produced by the improved Hummers method, and then the graphite oxide is dispersed in deionized water at an ultrasonic frequency of 40Hz~250Hz. Graphene dispersion; 2. Add iodide to the graphene oxide dispersion with a concentration of 0.1mg / mL~1.0mg / mL prepared in step 1, and stir for 10min~50min at a stirring speed of 200r / min~900r / min , then add Bi(NO 3 ) 3 ·5H 2 O, and continue to mix and stir at a stirring speed of 200r / min~900r / min for 10min~60min to make a suspension; 3. In a water bath with a temperature of 60°C~90°C, an ultrasonic frequency of 40Hz~250Hz and a stirring speed of Under the condition of 200r / min~900r / min, the suspension obtained in ...

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, graphite oxide is dispersed in deionized water at an ultrasonic frequency of 80 Hz to 200 Hz, and the ultrasonic dispersion time is 1.5 h to 2.5 h, which is obtained A graphene oxide dispersion with a concentration of 0.1 mg / mL to 1.0 mg / mL. Others are the same as the first embodiment.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass ratio of the iodide added in step 2 to the graphite oxide described in step 1 is (80-150):1. Others are the same as those in Embodiment 1 or 2.

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Abstract

A preparation method for a bismuth oxyiodide/graphene oxide compound visible light catalytic material relates to a preparation method of the visible light catalytic material. The preparation method aims at solving the problems in the compound light catalytic material prepared through the existing method of being complex in operation, long in periodicity, high in requirement for devices and not suitable for large-scale production. The bismuth oxyiodide/graphene oxide compound visible light catalytic material is prepared through iodide, Bi(NO3)3-5H2O and the graphene oxide dispersion liquid. The method includes: 1 preparing graphene oxide dispersion liquid; 2 mixing and stirring iodide, Bi(NO3)3-5H2O and the graphene oxide dispersion liquid to obtain turbid liquid; and 3 conducting ultrasonic processing, then filtering, washing and drying sequentially to obtain the bismuth oxyiodide/graphene oxide compound visible light catalytic material. The preparation method is mainly used for preparing the bismuth oxyiodide/graphene oxide compound visible light catalytic material.

Description

technical field [0001] The invention relates to a preparation method of a visible light catalytic material. Background technique [0002] In recent years, with the development of modern industry and the improvement of people's living standards, environmental pollutants, organic wastewater, soil pollution, etc. have increasingly serious impacts on the environment and human health, and the world is facing severe challenges of energy crisis and environmental pollution. Therefore, the development of practical and efficient pollution control technology has become a major issue facing and yet to be resolved. In the 1970s, Japanese scientists Fijishima and Honda published on n-type semiconductor TiO 2 Thesis on photo-splitting of water on electrodes, with TiO 2 As photocatalysts, nano-scale semiconductor materials led by them have been widely concerned by scientists from all over the world. Although TiO 2 It has the advantages of cheap, non-toxic, non-selective to the degradati...

Claims

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Application Information

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IPC IPC(8): B01J27/06
Inventor 李刚王莉娜李锦州刘凤华
Owner HARBIN NORMAL UNIVERSITY
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