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Preparation method of supported BiOIO3 photo-catalyst

A photocatalyst and supported technology, applied in the field of photocatalysis, can solve problems such as the difficulty of elemental mercury, and achieve the effects of high photocatalytic activity, favorable for large-scale industrial production, and excellent photocatalytic activity

Inactive Publication Date: 2015-07-29
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problems that the elemental mercury in the above-mentioned coal-fired flue gas is difficult to be removed by the existing flue gas treatment equipment, and at the same time, the elemental mercury is difficult to dissolve in water, and the divalent mercury can be removed by liquid phase absorption. Provides a simple, cost-effective load BiOIO 3 Preparation method of photocatalyst

Method used

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  • Preparation method of supported BiOIO3 photo-catalyst
  • Preparation method of supported BiOIO3 photo-catalyst
  • Preparation method of supported BiOIO3 photo-catalyst

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Embodiment 1

[0031] A load type BiOIO 3 The preparation method of photocatalyst specifically comprises the steps:

[0032] (1), powder BiOIO 3 preparation of

[0033] 1., 2.425g bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ?5H 2 O) Dissolve in 30ml of deionized water under magnetic stirring, add 1ml of HNO with a concentration of 67% by mass 3 aqueous solution, magnetically stirred for 30 minutes, and the resulting solution was designated as solution A;

[0034] In the above solution A, bismuth nitrate pentahydrate, deionized water, and HNO with a mass percentage concentration of 67% 3 The amount of aqueous solution, according to bismuth nitrate pentahydrate: deionized water: HNO with a mass percentage concentration of 67% 3 The aqueous solution is calculated at the ratio of 1:12.37:0.49;

[0035] ②, 1.07g potassium iodate (KIO 3 ) was dissolved in 30 ml of deionized water, stirred magnetically for 30 minutes, and the obtained potassium iodate aqueous solution with a concentration of...

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Abstract

The invention discloses a preparation method of a supported BiOIO3 photo-catalyst. The preparation method comprises the following steps: firstly, preparing a BiOIO3 powdery photo-catalyst by adopting a hydrothermal synthetic method; preparing the supported BiOIO3 photo-catalyst by adopting a dipping-pull method. The preparation method comprises the following concrete steps: firstly weighing a certain amount of BiOIO3 powder; adding 30ml of absolute ethanol; ultrasonically dispersing for 30min; adding glass fiber cloth; performing dipping-pull for a plurality of times; drying at the temperature of 80 DEG C; repeatedly performing the operation for three times to obtain the supported BiOIO3 photo-catalyst. The supported BiOIO3 photo-catalyst prepared by the method disclosed by the invention is high in catalytic activity, good in stability, capable of effectively removing elemental mercury by oxidization, good in application prospect in the field of control on emission of the elemental mercury in coal-fired flue gas, simple in preparation process and production equipment, free of secondary pollution and easy to produce industrially.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis in environmental governance, and in particular relates to a loaded BiOIO 3 Preparation method of photocatalyst. Background technique [0002] Due to its high toxicity, bioaccumulation and persistence, mercury element has brought serious harm to the ecological environment and human health in the process of ecosystem cycle. The sources of mercury in the atmosphere are mainly man-made mercury emissions and natural activity emissions. , where anthropogenic mercury emissions account for 30-50% of total atmospheric mercury emissions. Flue gas from coal-fired power plants is an important pollution source of atmospheric mercury pollution. In the United States, mercury emitted from coal-fired flue gas accounts for about 30% of anthropogenic mercury emissions. my country is a big coal-consuming country, and coal consumption accounts for about 70% of primary energy consumption. Coal-fired power pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/08
Inventor 齐雪梅吴江谷苗莉龙慧敏贺凯
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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