Bi2MoO6/TiO2/RGO (bismuth molybdate/titanium dioxide/reduced graphene oxide) composite light catalyst and preparation method thereof

A .bi2moo6, catalyst technology, applied in the field of Bi2MoO6/TiO2/RGO composite photocatalyst and its preparation, can solve the problems of poor charge transmission ability, large particle size of bismuth molybdate, sufficient bulk phase charge, etc., and achieve low cost, High reproducibility, effect of increasing specific surface area

Active Publication Date: 2017-01-11
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

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  • Bi2MoO6/TiO2/RGO (bismuth molybdate/titanium dioxide/reduced graphene oxide) composite light catalyst and preparation method thereof
  • Bi2MoO6/TiO2/RGO (bismuth molybdate/titanium dioxide/reduced graphene oxide) composite light catalyst and preparation method thereof
  • Bi2MoO6/TiO2/RGO (bismuth molybdate/titanium dioxide/reduced graphene oxide) composite light catalyst and preparation method thereof

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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, and then naturally cooled to room temperature. After the precipitate was washed three times with deio...

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Abstract

The invention relates to a Bi2MoO6 / TiO2 / RGO (bismuth molybdate / titanium dioxide / reduced graphene oxide) composite light catalyst and a preparation method thereof. The method is characterized in that a Bi2MoO6 nanometer material is prepared by using ammonium molybdate and bismuth nitrate as reactants by a simple hydrothermal method; RGO is prepared by using graphite oxide as a raw material by the hydrothermal method; finally, a Bi2MoO6 / TiO2 / RGO visible light catalytic material is prepared by a coprecipitation method. The preparation process of the method is simple and is easy to control; the operation is convenient; the cost is low; the visible light catalytic activity of the product is high.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31
CPCB01J23/31B01J35/004B01J37/031
Inventor 常立民徐达林雪
Owner JILIN NORMAL UNIV
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