A kind of silver-supported bismuth oxychloride nanomaterial and its preparation method and application

A bismuth oxychloride nanometer and nanomaterial technology, which is applied in the field of photocatalytic material preparation, can solve the problems of reducing the overall performance of single-atom catalysts, and achieve the effects of good governance or repair of the atmospheric environment, low synthesis energy consumption, and regular and uniform appearance

Active Publication Date: 2022-07-05
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, some single metal atoms buried in the carrier-aggregation interface or in the bulk support cannot contact with the reactive molecules and participate in the reaction, which greatly reduces the overall performance of single-atom catalysts.

Method used

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  • A kind of silver-supported bismuth oxychloride nanomaterial and its preparation method and application
  • A kind of silver-supported bismuth oxychloride nanomaterial and its preparation method and application
  • A kind of silver-supported bismuth oxychloride nanomaterial and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0034] Example 1: The silver-supported bismuth oxychloride nanomaterial provided in this example is formed by chemical bonds between silver atoms and chlorine atoms on the exposed crystal planes of the bismuth oxychloride nanochips with exposed crystal planes. The formula AgSAC / Cl BiOCl said.

[0035] The preparation of monoatomic silver-loaded bismuth oxychloride nanomaterials in the present embodiment is specifically:

[0036] 1. Preparation of bismuth oxychloride nanochips:

[0037] 1), with mannitol, polyvinylpyrrolidone and water in the ratio of 2.5mmol:0.4g:25ml, continuously stir until completely dissolved to obtain solution A;

[0038] 2), put 1mmol Bi (NO 3 ) 3 ·5H 2 O was ground to a fine powder under an infrared lamp and added to solution A, and stirred uniformly for 20 minutes until it was completely dissolved to obtain solution B;

[0039] 3), the ratio of potassium chloride to water is 3mmol: 10ml dissolve, stir to obtain solution C, add solution C to solut...

Embodiment 2

[0045] Embodiment 2: The silver-supported bismuth oxychloride nanomaterial provided in this embodiment is formed by chemical bonds between silver atoms and chlorine atoms on the exposed crystal plane of the bismuth oxychloride nanochip with exposed crystal planes. The formula AgSAC / Cl BiOCl said.

[0046] The preparation of monoatomic silver-loaded bismuth oxychloride nanomaterials in the present embodiment is specifically:

[0047] 1. Preparation of bismuth oxychloride nanochips:

[0048] 1), with mannitol, polyvinylpyrrolidone and water in the ratio of 5mmol:0.8g:50ml, continuously stir until completely dissolved to obtain solution A;

[0049] 2), put 1mmol Bi (NO 3 ) 3 ·5H 2 O is ground to a fine powder under an infrared lamp, then added to solution A, uniformly stirred for 20 minutes until completely dissolved to obtain solution B;

[0050] 3), dissolve potassium chloride and water in a ratio of 6mmol:20ml, stir to obtain solution C, add solution C to solution B, and...

Embodiment 3

[0056] Embodiment 3: The silver-supported bismuth oxychloride nanomaterial provided in this embodiment is formed by chemical bonds between silver atoms and chlorine atoms on the exposed crystal plane of the bismuth oxychloride nanochip with exposed crystal planes. The formula AgSAC / Cl BiOCl said.

[0057] The preparation of monoatomic silver-loaded bismuth oxychloride nanomaterials in the present embodiment is specifically:

[0058] 1. Preparation of bismuth oxychloride nanochips:

[0059] 1), with mannitol, polyvinylpyrrolidone and water in the ratio of 8mmol:1g:70ml, continuously stir until completely dissolved to obtain solution A;

[0060] 2), 3mmol Bi (NO 3 ) 3 ·5H 2 O is ground to a fine powder under an infrared lamp, then added to solution A, uniformly stirred for 20 minutes until completely dissolved to obtain solution B;

[0061] 3), dissolve potassium chloride and water in a ratio of 10 mmol: 30 ml, stir evenly to obtain solution C, add solution C to solution B...

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Abstract

The invention discloses a silver-loaded bismuth oxychloride nanometer material and a preparation method and application thereof. The material is formed by chemical bonds between silver atoms and chlorine atoms on the exposed crystal plane of a bismuth oxychloride nanometer wafer with exposed crystal planes. The preparation method includes: (1) providing a bismuth oxychloride nano wafer with exposed crystal planes, and the exposed crystal plane of the bismuth oxychloride nano wafer has chlorine atoms; (2) chemically bonding silver ions of a silver source to the Exposed crystal faces of a bismuth oxychloride nanowafer. The silver-supported bismuth oxychloride nanomaterial prepared by the strategy provided by the invention has regular and uniform morphology, simple process, low synthesis energy consumption, and the nanomaterial has high photocatalytic activity and can effectively degrade NOx and other gaseous pollutants. It can play a very good role in treating or repairing the atmospheric environment.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic material preparation, and in particular relates to a silver-supported bismuth oxychloride nanometer material and a preparation method and application thereof. Background technique [0002] Single-atom catalysis is different from nano-catalysis and sub-nanometer catalysis. When the particle dispersion scale reaches the single-atom size, it will lead to fundamental changes in its energy level structure and electronic structure, such as ultra-high atomic utilization, sharply increased surface freedom energy, quantum size effect, unsaturated coordination environment, etc. This special structure makes it show better catalytic performance than general metal catalysts or metal oxide catalysts, and single-atom catalysis can be widely used in electrocatalytic hydrogen evolution, CO 2 reduction, ammonia synthesis, VOCs purification and nitrogen oxide removal. At present, the research on single-atom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J23/50B01J35/00B01D53/86B01D53/56
CPCB01J23/50B01J27/06B01J35/004B01J35/0046B01D53/8628B01D2259/802Y02E60/36
Inventor 艾智慧邢攀刘修凡余凌浩张礼知
Owner HUAZHONG NORMAL UNIV
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