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Preparation method and application of two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material

A photocatalytic material and two-dimensional layered technology, applied in the field of photocatalysis, can solve the problems of material modification that have not been studied, and achieve excellent degradation effect, simple process and high efficiency

Pending Publication Date: 2020-09-04
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the preparation of BiOCl, NaNO has not been used 3 -KNO 3 As a molten salt, material synthesis is reported, and there is no research on material modification

Method used

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  • Preparation method and application of two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material
  • Preparation method and application of two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material
  • Preparation method and application of two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material

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Experimental program
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Effect test

Embodiment 1

[0033] (1) Fe bulk phase-doped BiOCl was prepared by molten salt method, and 25 g of NaNO with a mass ratio of 1:1 was weighed 3 and KNO 3 Mix and grind, then add 1.9403 g Bi(NO 3 ) 3 • 5H 2 O, 1.0000g KCl and 0.0170 g Fe(NO 3 ) 3 •9(H 2 0), mixed grinding 3h to get mixed powder;

[0034] (2) Place the mixed powder in an alumina crucible, anneal at 400°C for 3 hours, and cool naturally to ambient temperature to obtain a semi-finished product;

[0035] (3) Take out the semi-finished product, then wash it repeatedly with a mixed solution of deionized water and absolute ethanol, and then place the washed semi-finished powder in an oven at 80°C for overnight drying (abbreviated as 0.01Fe-BOC).

Embodiment 2

[0037] (1) Fe bulk phase-doped BiOCl was prepared by molten salt method, and 25 g of NaNO with a mass ratio of 1:1 was weighed 3 and KNO 3 Mix and grind, then add 1.9403 g Bi(NO 3 ) 3 • 5H 2 O, 1.0000g KCl and 0.0511 g Fe(NO 3 ) 3 •9(H 2 O), mixed grinding 3h. .

[0038] (2) Place the mixed powder in an alumina crucible, anneal at 400°C for 3h, and cool naturally to ambient temperature.

[0039] (3) Then wash repeatedly with a mixed solution of deionized water and absolute ethanol. Finally, the semi-finished powder was dried overnight in an oven at 80°C. (abbreviated as 0.03Fe-BOC).

Embodiment 3

[0041] (1) Fe bulk phase-doped BiOCl was prepared by molten salt method, and 25 g of NaNO with a mass ratio of 1:1 was weighed 3 and KNO 3 Mix and grind, then add 1.9403 g Bi(NO 3 ) 3 • 5H 2 O, 1.0000g KCl and 0.0851 g Fe(NO 3 ) 3 •9(H 2 O), mixed grinding 3h.

[0042] (2) Place the mixed powder in an alumina crucible, anneal at 400°C for 3h, and cool naturally to ambient temperature.

[0043] (3) Then wash repeatedly with a mixed solution of deionized water and absolute ethanol. Finally, the semi-finished powder was dried overnight in an oven at 80°C. (abbreviated as 0.05Fe-BOC).

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Abstract

The invention discloses a preparation method and application of a two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material. Pure BiOCl and Fe doped and modified BiOClare prepared by adopting a novel molten salt (NaNO3 and KNO3) method. The preparation method comprises the following steps: weighing NaNO3 and KNO3 according to a certain mass ratio, carrying out mixed grinding, adding Bi (NO3) 3-5H2O, KCl and Fe (NO3) 3-9 (H2O) into the mixed salt, and carrying out uniform mixed grinding; and putting the mixed and ground powder into an aluminum oxide crucible, and carrying out heat treatment to finally obtain Fe-doped modified BiOCl. The method has the advantages of low cost, high efficiency, environmental friendliness, safety, convenience, simple process andthe like, and the obtained Fe-doped modified BiOCl material is of a typical layer-layer structure, has more surface active regions, and has visible light response and stable photocatalytic performance so that the Fe-doped and modified BiOCl material has an important potential application value in preparation of a novel photocatalyst.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a preparation method and application of a two-dimensional layered bismuth oxychloride-Fe doped and modified photocatalytic material. Background technique [0002] With the continuous advancement of industrialization and urbanization, pollution problems caused by waste gas, organic matter, polymers and biomass have become increasingly serious. Among them, some artificially synthesized organic pollutants, although the concentration in the environment is very low, still have high toxicity, which requires efficient and "green" treatment technology to convert these pollutants into non-toxic (or low toxic) ) and does not produce secondary pollution substances. At present, some physical methods and chemical methods have been used to solve this problem. Physical treatment technologies mainly include adsorption, ultrafiltration, flocculation, etc. Chemical treatment technologie...

Claims

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Application Information

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IPC IPC(8): B01J27/128B01J35/10C02F1/30C02F101/38
CPCB01J27/128C02F1/30C02F2305/10C02F2101/38B01J35/61B01J35/39
Inventor 陈小卫奚新国许琦姜瑞雨陈俊徐风广
Owner YANCHENG INST OF TECH
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