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Preparation of Nickel Cobaltate/Bismuth Oxychloride Nanocomposite and Its Application in Catalytic Reduction of Organic Compounds

A technology of bismuth oxychloride nanometer and composite material, which is applied in physical/chemical process catalyst, chemical/physical process, reduced water/sewage treatment, etc., can solve the problem of low efficiency and change of catalytic reduction 4-nitrophenol and organic dyes. Catalytic activity, influence and other issues, to achieve the effect of high catalytic reduction efficiency and improved catalytic reduction performance

Inactive Publication Date: 2021-07-27
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, BiOCl is seldom used for catalytic reduction of organic matter, and its catalytic reduction efficiency of 4-nitrophenol and organic dyes is low, which seriously affects its use in the direction of catalytic reduction, so there is an urgent need to synthesize a new type of BiOCl compound Materials to change their catalytic activity and expand their applications in catalytic reduction of organics

Method used

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  • Preparation of Nickel Cobaltate/Bismuth Oxychloride Nanocomposite and Its Application in Catalytic Reduction of Organic Compounds
  • Preparation of Nickel Cobaltate/Bismuth Oxychloride Nanocomposite and Its Application in Catalytic Reduction of Organic Compounds
  • Preparation of Nickel Cobaltate/Bismuth Oxychloride Nanocomposite and Its Application in Catalytic Reduction of Organic Compounds

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 0.9701g Bi(NO 3 ) 3 ·5H 2 O dissolved in 20 mL of HNO 3 to obtain the first solution; dissolve 0.1491g KCl in 10mL distilled water to obtain the KCl solution; under magnetic stirring, add the KCl solution dropwise to the first solution; In the lining (the lining is sealed with a stainless steel autoclave), react at a temperature of 160°C for 24h, cool to room temperature, and centrifuge to obtain the first precipitate, which is washed three times with distilled water and ethanol, and dried at a temperature of 60°C for 8h , to obtain BiOCl nanosheets; disperse 50mg of BiOCl in 50mL of distilled water and ultrasonically 2h to obtain a BiOCl dispersion; 14.65mg of Ni(NO 3 ) 2 ·6H 2 O and 29.33mg of Co(NO 3 ) 2 ·6H 2 O was dissolved in 13.34 mL of distilled water to form a second solution, and the concentration of metal ions in this second solution per liter was 11.35 mmol / L. 64.54 mg of hexamethylenetetramine was dissolved in distilled water to form a third soluti...

Embodiment 2

[0043] According to 10mL of HNO with a molar volume concentration of 1mol / L 3 Add 1mmol Bi(NO 3 ) 3 ·5H 2 The proportion of O, the Bi(NO 3 ) 3 ·5H 2 O dissolved in HNO 3 According to the proportion of adding 1mmol KCl in 5mL distilled water, KCl was dissolved in distilled water to obtain a KCl solution; according to the volume ratio of 1:1, the KCl solution and the first solution were respectively taken under the condition of magnetic stirring , add the KCl solution dropwise to the first solution, after the dropwise addition, keep stirring for 30 min, transfer to the reaction kettle, react at a temperature of 150°C for 25h, cool to normal temperature, and centrifuge to obtain the first precipitate, Wash the first precipitate 3 times with distilled water and ethanol respectively; dry at 80°C for 10 h to obtain BiOCl nanosheets; In the process, ultrasound 1.5h, to get BiOCl dispersion; according to the molar ratio of 1:2.5, Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 ...

Embodiment 3

[0045] According to 10mL of HNO with a molar volume concentration of 1mol / L 3 Add 1mmol Bi(NO 3 ) 3 ·5H 2 The proportion of O, the Bi(NO 3 ) 3 ·5H 2 O dissolved in HNO 3 According to the proportion of adding 1mmol KCl in 5mL of distilled water, KCl was dissolved in distilled water to obtain a KCl solution; according to the volume ratio of 1:2, the KCl solution and the first solution were respectively taken under the condition of magnetic stirring , add the KCl solution dropwise to the first solution, after the dropwise addition, keep stirring for 30 min, transfer to the reaction kettle, react at 160°C for 23h, cool to normal temperature, and centrifuge to obtain the first precipitate, Wash the first precipitate 3 times with distilled water and ethanol respectively; dry at 60°C for 8 hours to obtain BiOCl nanosheets; , and ultrasonically for 2 h, the BiOCl dispersion was obtained; Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O, Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2...

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Abstract

The invention discloses the preparation of a nickel cobaltate / bismuth oxychloride nanocomposite material and its application in catalytic reduction of organic matter. Bismuth nitrate pentahydrate is dissolved in nitric acid to form the first solution; potassium chloride is dissolved in distilled water to form a potassium chloride solution; Sonicate in distilled water to obtain a BiOCl dispersion; dissolve nickel nitrate and cobalt nitrate in distilled water to obtain a second solution; dissolve hexamethylenetetramine in distilled water to obtain a third solution; drop the second solution into the BiOCl dispersion, then add The third solution; reflux reaction, cooling and centrifuging to obtain the second precipitate, washing and drying to obtain the nickel cobaltate / bismuth oxychloride nanocomposite material. The nanocomposite material can catalyze the reduction of organic matter. The preparation method adopts hydrothermal method to prepare BiOCl, NiCo 2 o 4 Nanosheets loaded onto BiOCl can improve the catalytic reduction performance of the composite.

Description

technical field [0001] The invention belongs to the technical field of organic dyes, and relates to the preparation of a nickel cobaltate / bismuth oxychloride nanocatalyst, in particular to a NiCo 2 o 4 The preparation method of a novel catalyst modified BiOCl as a co-catalyst is used for the catalytic reduction of 4-nitrophenol and organic dyes in water. Background technique [0002] With the continuous acceleration of the industrialization process, the discharge of wastewater is increasing day by day, and the environmental problems caused by it are becoming more and more serious, which has become a key issue restricting human development. In these wastewaters, organic pollutants directly endanger the survival and health of human beings, and have become the focus of widespread concern. Therefore, a simple, efficient, and low-cost method has been developed to prepare catalysts with excellent performance and high stability for use in It is imminent to solve the problem of or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/128C02F1/70C02F101/30C02F101/38
CPCB01J27/128C02F1/70C02F2101/308C02F2101/38
Inventor 职丽华徐有园张生雅刘家成胡东成
Owner NORTHWEST NORMAL UNIVERSITY
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