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A kind of bi2moo6/tio2/rgo composite photocatalyst and preparation method thereof

A technology of catalyst and composite light, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problems of poor ability to transport charges, large particle size of bismuth molybdate, sufficient bulk charge, etc. , to achieve the effect of low cost, high repeatability, and increased specific surface area

Active Publication Date: 2018-09-07
JILIN NORMAL UNIV
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Problems solved by technology

However, the particle size of bismuth molybdate synthesized by general methods is relatively large, the distance for photogenerated charges to be transported to the surface is relatively long, and its ability to transport charges is poor, which results in serious bulk phase charges and low quantum efficiency. Meet the practical application

Method used

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  • A kind of bi2moo6/tio2/rgo composite photocatalyst and preparation method thereof
  • A kind of bi2moo6/tio2/rgo composite photocatalyst and preparation method thereof
  • A kind of bi2moo6/tio2/rgo composite photocatalyst and preparation method thereof

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Experimental program
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Embodiment Construction

[0019] Bi 2 MoO 6 / TiO 2 / RGO composite photocatalyst is made of Bi 2 MoO 6 、TiO 2 Composed with RGO, Bi 2 MoO 6 、TiO 2 And RGO weight ratio is 15:3:3.

[0020] Preparation method of composite photocatalyst:

[0021] 1. Bi 2 MoO 6 Preparation: using hydrothermal synthesis method, 1mmol ammonium molybdate was dissolved in 10mL deionized water, 7mmol bismuth nitrate was dissolved in 5mL deionized water, the bismuth nitrate solution was slowly added dropwise to the ammonium molybdate solution under magnetic stirring, After the dropwise addition was completed, the stirring was continued for 30 min, and the pH was adjusted to 14 during the stirring process. After stirring, ultrasonically disperse for 30 min. The sonicated mixture was charged into a polytetrafluoroethylene-lined stainless steel reactor with a filling degree of 70%, heated to 160°C and kept for 24 hours, then naturally cooled to room temperature. After the precipitate was washed three times with deionize...

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Abstract

The invention relates to a Bi2MoO6 / TiO2 / RGO composite photocatalyst and a preparation method thereof. The method uses ammonium molybdate and bismuth nitrate as reactants to prepare bismuth molybdate nanomaterials through a simple hydrothermal method. The hydrothermal method is used to prepare bismuth molybdate nanomaterials. Graphite oxide is used as raw material to prepare reduced graphene oxide (RGO); finally, the co-precipitation method is used to prepare Bi2MoO6 / TiO2 / RGO visible light catalytic material. The preparation process of this method is simple and easy to control, convenient to operate, low in cost, and the product has high visible light catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanomaterials, in particular to Bi 2 MoO 6 / TiO 2 / RGO composite photocatalyst and preparation method thereof. Background technique [0002] Photocatalysis is one of the most promising technologies to solve environmental pollution and energy problems. It can use solar energy to degrade most harmful substances in water and air into small inorganic molecules such as water and carbon dioxide, and can decompose water to produce hydrogen. It has the advantages of high efficiency, energy saving, clean and non-toxic, no secondary pollution and simple process. . [0003] Composite oxides containing different proportions of bismuth, molybdenum and oxygen are collectively called bismuth molybdate. According to different proportions of bismuth, molybdenum and oxygen, bismuth molybdate has many different compositions and structures. Bismuth molybdate materials are a class of functional materials w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/31
CPCB01J23/31B01J37/031B01J35/39
Inventor 常立民徐达林雪
Owner JILIN NORMAL UNIV
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