NaInO2 photocatalyst and preparation method thereof

A technology of photocatalyst and sodium acetate, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of low quantum efficiency and large band gap, To achieve the effect of broad application prospects

Inactive Publication Date: 2014-04-16
CHANGSHA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The first object of the present invention is to provide a kind of NaInO 2 The preparation method of photocatalyst, the photocatalyst prepared by this method overcomes the shortcomings of traditional photocatalysts such as large band gap, low quantum efficiency, and can only work under ultraviolet light. It also has certain photocatalytic properties

Method used

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  • NaInO2 photocatalyst and preparation method thereof
  • NaInO2 photocatalyst and preparation method thereof
  • NaInO2 photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Accurately weigh 4.0832g CH 3 COONa·3H 2 O and 11.4556g In(NO 3 ) 3 4.5H 2 O mixed in a 300mL beaker (CH 3 COONa·3H 2 O and In(NO 3 ) 3 4.5H 2 O molar ratio is 1:1), add 60mL ethylene glycol as a solvent, and stir electrically for 8 hours in a water bath at 60-70°C to form a sol-gel system; place the sol-gel in a constant temperature drying oven at 150°C The precursor was dried at lower temperature to obtain the precursor; the precursor was calcined in a muffle furnace at 900°C for 8 hours, cooled naturally and ground into powder to obtain NaInO 2 catalyst of light.

Embodiment 2

[0029] Accurately weigh 8.1690g CH 3 COONa·3H 2 O and 11.4525g In(NO 3 ) 3 4.5H 2 O mixed in a 300mL beaker (CH 3 COONa·3H 2 O and In(NO 3 ) 3 4.5H 2 O molar ratio is 1:2), add 60mL ethylene glycol as a solvent, and stir electrically for 8 hours in a water bath at 60-70°C to form a sol-gel system; place the sol-gel in a constant temperature drying oven, The precursor was dried at lower temperature to obtain the precursor; the precursor was calcined in a muffle furnace at 900°C for 8 hours, cooled naturally and ground into powder to obtain NaInO 2 catalyst of light.

Embodiment 3

[0031] Accurately weigh 6.1235g CH 3 COONa·3H 2 O and 5.7260g In(NO 3 ) 3 4.5H 2 O mixed in a 300mL beaker (CH 3 COONa·3H 2 O and In(NO 3 ) 3 4.5H 2 O molar ratio is 1:3), add 60mL of ethylene glycol as solvent, electric stirring in a water bath at 60-70°C for 8h to form a sol-gel system; put the sol-gel in a constant temperature drying oven, The precursor was dried at lower temperature to obtain the precursor; the precursor was calcined in a muffle furnace at 900°C for 8 hours, cooled naturally and ground into powder to obtain NaInO 2 catalyst of light.

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Abstract

The invention discloses a NaInO2 photocatalyst and a preparation method thereof. The method comprises the following steps: preparing the NaInO2 photocatalyst by a sol-gel method; with crystal sodium acetate and indium nitrate as raw materials, and ethylene glycol as a solvent, electrically stirring under a water bath condition to form a sol-gel system; baking the sol-gel system to obtain a precursor; burning the precursor at certain temperature so as to obtain the NaInO2 photocatalyst. The NaInO2 photocatalyst provided by the invention has photocatalytic performance under ultraviolet light, and also has certain photocatalytic performance within a visible light range. The preparation method disclosed by the invention lays a foundation for development of a novel visible light response photocatalyst, has important reference value on large-scale industrial application of a photocatalytic material, and has broad application prospects in the field of environmental photocatalysis of wastewater treatment, air purification and the like.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a NaInO 2 Photocatalyst and its preparation method. Background technique [0002] Photocatalytic technology is considered as a typical advanced oxidation technology, which can degrade various types of biodegradable and trace organic substances, and is considered to be the most effective method for dealing with new organic pollutants. Semiconductor photocatalyst oxidation technology has become an ideal environmental pollution control technology due to its remarkable characteristics and advantages such as the use of sunlight (energy saving), complete degradation of pollutants at room temperature, no secondary pollution (green), spectrum and long-term effect. Such as the traditional photocatalytic nanomaterial nano titanium dioxide (TiO 2 ), has the characteristics of non-toxic, stable and strong oxidation ability, and can oxidize various organic substances under the irradiation of u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/08
Inventor 方志薇张向超许第发张世英邝攀勇
Owner CHANGSHA UNIVERSITY
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