Preparation method and applications of bismuth oxychloride nano sheet

A bismuth oxychloride nanometer and bismuth salt technology, which is applied in the field of environmental chemical photocatalytic water treatment, can solve problems such as difficult stripping of organic pollutants, and achieve the effect of being suitable for industrial production and market promotion and application, easy to implement, and easy to obtain raw materials

Active Publication Date: 2018-08-17
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that the bismuth oxychloride photocatalyst is difficult to peel off and the degradation of organic pollutants in the prior art requires an efficient visible light catalyst, the present invention provides a preparation method of bismuth oxychloride nanosheets, which uses the large ion stripping of tetrabutylammonium hydroxide performance, to peel off the layered structure of bismuth oxychloride, and broaden the absorption spectrum of bismuth oxychloride photocatalyst to the visible light region, using bismuth salt, chloride and tetrabutylammonium hydroxide as raw materials, through stirring, precipitation, separation, washing and Visible light-responsive two-dimensional bismuth oxychloride nanosheet photocatalyst prepared by drying step

Method used

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  • Preparation method and applications of bismuth oxychloride nano sheet
  • Preparation method and applications of bismuth oxychloride nano sheet
  • Preparation method and applications of bismuth oxychloride nano sheet

Examples

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Effect test

Embodiment 1

[0023] This example does not add tetrabutylammonium hydroxide; dissolve sodium chloride in deionized water, then add bismuth nitrate, stir and react for 6 hours, and leave it at room temperature for 1 hour to obtain a suspension, wherein the molar ratio of sodium chloride to bismuth nitrate The ratio is 1:1; the suspension is suction filtered, the filter cake is washed with deionized water and then washed twice with absolute ethanol, and then dried at 40°C to obtain bismuth oxychloride nanosheets;

[0024] Bismuth oxychloride nanosheets are used to oxidize carbamazepine, and the degradation steps are:

[0025] Step (1): Accurately weigh 7 mg of carbamazepine, dissolve it in distilled water, and set the volume to 1000 mL to prepare 7 mg·L -1 Carbamazepine solution;

[0026] Step (2): Use a pipette to accurately pipette 50 mL of the carbamazepine solution obtained in step (1) into the reactor, and add 0.04 g of bismuth oxychloride photocatalyst. The temperature of the reaction ...

Embodiment 2

[0029] Dissolve tetrabutylammonium hydroxide in deionized water; then add sodium chloride to dissolve again, and finally add bismuth nitrate, stir and mix for 6 hours, and leave it at room temperature for 1 hour to obtain a suspension, wherein the mole of tetrabutylammonium hydroxide and sodium chloride The ratio is 1:0.5, the molar ratio of sodium chloride to bismuth nitrate is 1:1; the suspension is suction filtered, the filter cake is washed with deionized water and then washed twice with absolute ethanol, and then dried at 40 °C dry to obtain visible light-responsive bismuth oxychloride nanosheets.

[0030] Bismuth oxychloride nanosheets are used for oxidation treatment of carbamazepine; the degradation steps are:

[0031] Step (1): Accurately weigh 7 mg of carbamazepine, dissolve it in distilled water, and set the volume to 1000 mL to prepare 7 mg·L -1 Carbamazepine solution;

[0032] Step (2): Use a pipette to accurately pipette 50 mL of the carbamazepine solution obta...

Embodiment 3

[0035] Dissolve tetrabutylammonium hydroxide in deionized water; then add potassium chloride to dissolve again, finally add bismuth nitrate, stir and mix for 3 hours, and leave it at room temperature for 3 hours to obtain a suspension, wherein the molar ratio of tetrabutylammonium hydroxide to potassium chloride The molar ratio of potassium chloride to bismuth nitrate was 1:1.2; the suspension was suction-filtered, the filter cake was washed with deionized water and then washed once with absolute ethanol, and then dried at 45 °C , that is, visible light-responsive bismuth oxychloride nanosheets.

[0036] Bismuth oxychloride nanosheets are used to oxidize carbamazepine, and the degradation steps are:

[0037] Step (1): Accurately weigh 7 mg of carbamazepine, dissolve it in distilled water, and set the volume to 1000 mL to prepare 7 mg·L -1 Carbamazepine solution;

[0038] Step (2): Use a pipette to accurately pipette 50 mL of the carbamazepine solution obtained in step (1) in...

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Abstract

The invention discloses a preparation method of a bismuth oxychloride nano sheet, and belongs to the technical field of photocatalytic water treatment in environmental chemical engineering. Accordingto the preparation method, tetrabutyl ammonium hydroxide is dissolved in deionized water, then chlorides and bismuth salts are added in sequence, the mixture is stirred and allowed to stand still fora while, the obtained precipitates are washed by deionized water and ethanol, and finally the precipitates are dried to obtain the bismuth oxychloride nano sheet. The photocatalytic material is synthesized from nontoxic reagents by a simple method. The method is green and environmentally friendly. The bismuth oxychloride nano sheet has a strong performance on degrading pollutants in the presence of visible light or / and full light and has a high application value in fields such as pollution treatment, new energy preparation, selective catalytic oxidation, and the like.

Description

technical field [0001] The invention relates to a preparation method and application of visible light-responsive bismuth oxychloride nanosheets, and belongs to the technical field of photocatalytic water treatment of environmental chemical industry. Background technique [0002] With the development of the dye industry, its production wastewater has become one of the most important sources of water pollution. Dye wastewater has the characteristics of deep color, complex composition, high COD value and refractory degradation, which brings serious harm to the ecological environment. At present, the methods for treating dye wastewater mainly include: adsorption method, membrane separation method, photocatalytic oxidation method, electrochemical oxidation method, ultrasonic degradation technology, etc. The photocatalytic oxidation method has the characteristics of energy saving, high efficiency, and complete degradation of pollutants. TiO 2 It is the most widely used photocata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J37/03C01G29/00C02F1/30B82Y40/00C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J27/06B01J35/004B01J37/03B82Y40/00C01G29/00C02F1/30C02F2101/30C02F2101/34C02F2101/36C02F2101/38C02F2101/40C02F2305/10
Inventor 高晓亚唐光贝郭倩彭稳
Owner KUNMING UNIV OF SCI & TECH
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