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Preparation method of oxidized grapheme/titanium dioxide photocatalytic composite material precursor

A composite material, titanium dioxide technology, applied in the field of photocatalytic reaction, can solve the problems of difficult regulation of activity and low molecular weight of products, and achieve the effects of improving photocatalytic performance, wide application range and low utilization rate

Inactive Publication Date: 2017-03-08
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of this precursor requires an anhydrous and oxygen-free environment, the product molecular weight is low, and the nano-TiO 2 The activity is not easily regulated

Method used

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  • Preparation method of oxidized grapheme/titanium dioxide photocatalytic composite material precursor
  • Preparation method of oxidized grapheme/titanium dioxide photocatalytic composite material precursor
  • Preparation method of oxidized grapheme/titanium dioxide photocatalytic composite material precursor

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Experimental program
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Effect test

Embodiment 1

[0033] A preparation method of graphene oxide / titanium dioxide photocatalytic composite precursor, comprising the following steps:

[0034] S1, the preparation of graphene oxide / tetrabutyl titanate composite material, comprises the following steps:

[0035] S1.1. According to the ratio of material to liquid, graphene oxide: tetrabutyl titanate: dehydrated alcohol = 0.003g: 30mL: 0.5g, take graphene oxide, tetrabutyl titanate and dehydrated alcohol into the quartz tube, Stir evenly, and seal it after passing nitrogen gas for 2 minutes;

[0036] S1.2. Put it into a photochemical reaction apparatus under stirring conditions, light it with ultraviolet light for 2 hours, filter it, and wash it with absolute ethanol.

[0037] S2, the preparation of graphene oxide / titanium dioxide composite material, comprises the following steps: according to volume ratio, deionized water: absolute ethanol=1: 50, get the graphene oxide / tetrabutyl titanate composite material that S1 prepares, remove ...

Embodiment 2

[0039] A preparation method of graphene oxide / titanium dioxide photocatalytic composite precursor, comprising the following steps:

[0040] S1, the preparation of graphene oxide / tetrabutyl titanate composite material, comprises the following steps:

[0041] S1.1. According to the ratio of material to liquid, graphene oxide: tetrabutyl titanate: dehydrated alcohol = 0.005g: 40mL: 0.8g, take graphene oxide, tetrabutyl titanate and dehydrated alcohol into the quartz tube, Stir evenly, and seal after 4 minutes with nitrogen gas;

[0042] S1.2. Put it into a photochemical reaction apparatus under stirring conditions, light it with ultraviolet light for 1 hour, filter it, and wash it with absolute ethanol.

[0043] S2, the preparation of graphene oxide / titanium dioxide composite material, comprises the following steps: according to volume ratio, deionized water: absolute ethanol=5: 10, get the graphene oxide / tetrabutyl titanate composite material that S1 prepares, remove Ionized w...

Embodiment 3

[0045] A preparation method of graphene oxide / titanium dioxide photocatalytic composite precursor, comprising the following steps:

[0046] S1, the preparation of graphene oxide / tetrabutyl titanate composite material, comprises the following steps:

[0047] S1.1. According to the ratio of material to liquid, graphene oxide: tetrabutyl titanate: dehydrated alcohol = 0.004g: 35mL: 0.6g, take graphene oxide, tetrabutyl titanate and dehydrated alcohol into the quartz tube, Stir evenly, and seal it after passing nitrogen gas for 3 minutes;

[0048] S1.2. Put it into a photochemical reaction apparatus under stirring conditions, light it with ultraviolet light for 1.5 hours, filter it, and wash it with absolute ethanol.

[0049] S2, the preparation of graphene oxide / titanium dioxide composite material, comprises the following steps: according to volume ratio, deionized water: absolute ethanol=1: 10, get the graphene oxide / tetrabutyl titanate composite material that S1 prepares, remo...

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Abstract

The invention discloses a preparation method of an oxidized grapheme / titanium dioxide photocatalytic composite material precursor. The preparation method includes the steps of S1) , preparation of an oxidized grapheme / tetrabutyl titanate composite material; S2), preparation of an oxidized grapheme / titanium dioxide composite material. With the preparation method, the photocatalytic composite material precursor with uniform load of titanium dioxide can be prepared; TiO2 in the precursor and the oxidized grapheme are organically composited, TiO2 particles are evenly loaded on slice layers of the oxidized grapheme, introduction of the oxidized grapheme has double functions of loading the TiO2 particles and improving photocatalytic activity of titanium dioxide, and photodegradation efficiency is effectively improved; the material for the precursor has good coating function; the preparation method has the advantages of simple steps, easiness in operation, moderate preparation conditions and easy control, high efficiency and the like.

Description

technical field [0001] The invention relates to a preparation method of a graphene oxide / titanium dioxide photocatalytic composite material precursor, and specifically belongs to the technical field of photocatalytic reaction. Background technique [0002] With the rapid development of industry today, environmental pollution is becoming more and more serious, such as industrial wastewater is toxic, harmful, and difficult to degrade, and traditional treatment methods can no longer meet the needs of today's society for environmental friendliness. As a new environmental pollution control technology, photocatalytic technology has made a major breakthrough in the removal of organic pollutants. It is an urgent task to find environmentally friendly catalysts that can effectively catalyze the degradation of organic pollutants. Ti0 2 As an n-type semiconductor catalyst, it has many advantages such as high chemical stability, corrosion resistance, good catalytic activity, and non-tox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J21/06B01J35/06
CPCB01J21/063B01J21/18B01J35/58B01J35/39
Inventor 李明智王海旺魏新芳王柄柱马知雨王雪晶藜赛瑶
Owner 东北大学秦皇岛分校
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