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Visible light response type nanosheet bismuth oxychloride catalyst and preparation method thereof

A bismuth oxychloride and nano-sheet technology, applied in the field of environmental chemical photocatalytic water treatment, can solve the problems of low photocatalytic activity and the like, and achieve the effects of high visible light catalytic activity, high yield and low cost

Inactive Publication Date: 2015-04-01
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a visible light-responsive nano-flaky bismuth oxychloride catalyst, which solves the problem of low catalytic activity of the photocatalyst in the prior art

Method used

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  • Visible light response type nanosheet bismuth oxychloride catalyst and preparation method thereof
  • Visible light response type nanosheet bismuth oxychloride catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation steps of BiOCl visible light catalyst are:

[0023] Step 1: 0.01molBi(NO 3 ) 3 ·5H 2 O is added to 10ml of HCl and C7H17NO3 mixed solution, wherein the mass concentration of C7H17NO3 is 50%, the mass concentration of HCl is 37.5%, and stirred at room temperature until Bi(NO 3 ) 3 ·5H 2 O is completely dissolved;

[0024] Step 2: Use NH 3 ·H 2 O adjusts the pH=6 of the above solution, and stirs at room temperature for 30min;

[0025] Step 3: After step 2, filter the obtained product, rinse with distilled water and absolute ethanol three times respectively, and then dry the product at 140°C for 8 hours to obtain off-white BiOCl photocatalyst material with a photocatalyst length of 100~ 200nm, nanosheets with a width of 50~150nm.

Embodiment 2

[0027] The preparation steps of BiOCl visible light catalyst are:

[0028] Step 1: 0.01molBi(NO 3 ) 3 ·5H 2 O is added in the HCl and C7H17NO3 mixed solution of 10ml, wherein the mass concentration of C7H17NO3 is 40%, the mass concentration of HCl is 38%, stirs at room temperature until Bi(NO 3 ) 3 ·5H 2 O is completely dissolved;

[0029] Step 2: Use NH 3 ·H 2 O adjust the pH=5 of the above solution, stir at room temperature for 30min;

[0030] Step 3: After step 2, filter the obtained product, rinse with distilled water and absolute ethanol three times respectively, and then dry the product at 140°C for 8 hours to obtain off-white BiOCl photocatalyst material with a photocatalyst length of 100~ 200nm, nanosheets with a width of 50~150nm.

Embodiment 3

[0032] The preparation steps of BiOCl visible light catalyst are:

[0033] Step 1: 0.01molBi(NO 3 ) 3 ·5H 2 O is added in the HCl and C7H17NO3 mixed solution of 10ml, wherein the mass concentration of C7H17NO3 is 30%, the mass concentration of HCl is 37.5%, stirs at room temperature until Bi(NO 3 ) 3 ·5H 2 O is completely dissolved;

[0034] Step 2: Use NH 3 ·H 2 O adjusts the pH=6 of the above solution, and stirs at room temperature for 30min;

[0035] Step 3: After step 2, filter the obtained product, rinse with distilled water and absolute ethanol three times respectively, and then dry the product at 120°C for 8 hours to obtain off-white BiOCl photocatalyst material with a photocatalyst length of 100~ 200nm, nanosheets with a width of 50~150nm.

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Abstract

The invention provides a visible light response type nanosheet bismuth oxychloride catalyst and a preparation method thereof. The preparation method specifically comprises the following steps: adding bismuth nitrate pentahydrate to dilute hydrochloric acid, and stirring at room temperature until the bismuth nitrate pentahydrate is completely dissolved; adjusting the pH value of the solution to 2-8 with aqueous ammonia, and stirring at room temperature for 30min; filtering, washing and drying the prepared suspension (drying temperature is 100 to 180 DEG C, and drying time is 8h) to obtain the gray nanosheet bismuth oxychloride photocatalyst which is 100-200nm long and 50-150nm wide. Under the irradiation of visible light, a target pollutant, Rhodamine B (RhB) dye wastewater, is completely degraded within 10min in the presence of the catalyst. The method has the advantages of simple synthetic route and high catalyst yield and is suitable for industrial mass production, the catalyst is high in catalytic efficiency and recycle rate, and the synthetic process can be performed at room temperature without auxiliary equipment.

Description

technical field [0001] The invention relates to a visible light photocatalytic material, in particular to a visible light responsive nano flake bismuth oxychloride catalyst and a preparation method thereof, which is especially suitable for visible light treatment of dye polluted wastewater and belongs to the technical field of environmental chemical photocatalytic water treatment. Background technique [0002] At present, with the depletion of fossil fuels such as coal, oil, and natural gas, and the increasing environmental problems such as smog, acid rain, and photochemical smog, materials and technologies that improve solar energy utilization have attracted much attention. Semiconductor photocatalysis technology can make full use of solar energy to decompose water to produce hydrogen and degrade organic pollutants, which is of great significance to the development of new energy and the treatment of environmental problems. It is well known that TiO 2 It is the most widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06C01G29/00B82Y30/00B82Y40/00C02F1/30
CPCY02W10/37
Inventor 陆光王新阳马国辉
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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