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Flaky CdS/BiOCl composite nanometer material and preparation method thereof

A composite nanomaterial and sheet-like technology is applied in the field of composite photocatalyst preparation, which can solve the problems of photocatalyst photocorrosion and unstable CdS, and achieve the effects of low cost and easy availability of raw materials.

Inactive Publication Date: 2016-10-12
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, CdS is not very stable, and the surface of the photocatalyst is prone to photocorrosion.

Method used

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  • Flaky CdS/BiOCl composite nanometer material and preparation method thereof
  • Flaky CdS/BiOCl composite nanometer material and preparation method thereof
  • Flaky CdS/BiOCl composite nanometer material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] The flaky CdS / BiOCl composite nanomaterial of the present invention is prepared by microwave-assisted chemical synthesis technology, and its specific process is as follows:

[0025] (1) Weigh 1mmol bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 (0), add 10mL ethanol, stir and dissolve to obtain bismuth nitrate solution, take by weighing 2mmol sodium chloride (NaCl), add 50mL deionized water, stir and dissolve to obtain sodium chloride solution;

[0026] (2) Mix the above two solutions, stir them magnetically for 15 minutes, place the reaction mixture in a household microwave oven, set the low heat to heat for 20 minutes, naturally cool to room temperature, filter, wash, and dry to obtain BiOCl nanopowder;

[0027] (3) Weigh 0.2g BiOCl, add to 30mL containing 0.6mmol cadmium acetate (Cd(CH 3 COO) 2 2H 2 O) in an aqueous solution, ultrasonically disperse for 15 minutes to obtain dispersion A;

[0028] (4) Weigh 1.0 mmol thiourea, add 30 mL deionized water, and dissolve to obtai...

Embodiment 2

[0035] The flaky CdS / BiOCl composite nanomaterial of the present invention is prepared by microwave-assisted chemical synthesis technology, and its specific process is as follows:

[0036] (1) Weigh 1mmol bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 (0), add 10mL ethanol, stir and dissolve to obtain bismuth nitrate solution, take by weighing 2mmol sodium chloride (NaCl), add 50mL deionized water, stir and dissolve to obtain sodium chloride solution;

[0037] (2) Mix the above two solutions, stir them magnetically for 20 minutes, place the reaction mixture in a household microwave oven, set the low heat to heat for 20 minutes, cool naturally to room temperature, filter, wash, and dry to obtain BiOCl nanopowder;

[0038] (3) Weigh 0.2g BiOCl, add to 30mL containing 1.0mmol cadmium acetate (Cd(CH 3 COO) 2 2H 2 O) in an aqueous solution, ultrasonically disperse for 20 minutes to obtain dispersion A;

[0039] (4) Weigh 1.2mmol thiourea, add 30mL deionized water, and dissolve to obtain ...

Embodiment 3

[0044] The flaky CdS / BiOCl composite nanomaterial of the present invention is prepared by microwave-assisted chemical synthesis technology, and its specific process is as follows:

[0045] (1) Weigh 1mmol bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 (0), add 10mL ethanol, stir and dissolve to obtain bismuth nitrate solution, take by weighing 2mmol sodium chloride (NaCl), add 50mL deionized water, stir and dissolve to obtain sodium chloride solution;

[0046] (2) Mix the above two solutions, stir them magnetically for 20 minutes, place the reaction mixture in a household microwave oven, set the low heat to heat for 20 minutes, naturally cool to room temperature, suction filter, wash, and dry to obtain BiOCl nanopowder;

[0047] (3) Weigh 0.2g BiOCl, add to 30mL containing 1.4mmol cadmium acetate (Cd(CH 3 COO) 2 2H 2 O) in an aqueous solution, ultrasonically disperse for 20 minutes to obtain dispersion A;

[0048] (4) Weigh 1.5mmol thiourea, add 30mL deionized water, and dissolve to...

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Abstract

The invention discloses a flaky CdS / BiOCl composite nanometer material and a preparation method thereof. The preparation method comprises the following steps: mixing an ethanol solution containing an appropriate amount of bismuth nitrate with a sodium chloride water solution, magnetically stirring for 10 to 20 minutes, and conducting microwave reaction to obtain BiOCl nanometer powder; weighing 0.2 g of BiOCl to be added into 30 mL of a water solution containing a certain amount of cadmium acetate, and conducting ultrasound dispersion for 15 to 20 minutes to obtain a dispersion liquid A; weighing an appropriate amount of thiourea to be added into 30 mL of deionized water, and dissolving to obtain a solution B; adding the solution B into the dispersion liquid A, magnetically stirring for 10 to 20 minutes, placing a reaction mixture in a household microwave oven, setting a low fire level, and heating for 20 minutes; after the reaction is finished, naturally cooling, and conducting suction filtration and drying, so as to obtain the flaky CdS / BiOCl composite nanometer material. The flaky CdS / BiOCl composite nanometer material is high in yield and novel in structure, the size is 200-600 nm, the nanometer flaky substrate is BiOCl, and the granular CdS nanocrystals are compactly loaded on the surface of BiOCl flakes. The flaky CdS / BiOCl composite nanometer material and the preparation method thereof have the advantages that the operation is simple, the repeatability is good, the environment can be protected, and the energy can be saved.

Description

technical field [0001] The invention relates to the technical field of composite photocatalyst preparation, in particular to a sheet-like CdS / BiOCl composite nanomaterial and a preparation method thereof. Background technique [0002] In 1972, Fujishima et al. reported that under light conditions, water can be deposited on the semiconductor TiO 2 A photocatalytic decomposition reaction occurs on the electrode surface to release oxygen. This research broadens the utilization of solar energy and opens up semiconductor photocatalysis as a new research field. In recent years, the interaction between environmental pollution and energy utilization has attracted the attention of many researchers. Compared with traditional chemical oxidation technology, semiconductor photocatalytic oxidation technology is more attractive due to its cheapness, non-toxicity and physical and chemical stability, and it is expected to use solar energy to solve some related problems. [0003] As a new ...

Claims

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Application Information

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IPC IPC(8): B01J27/138B01J35/02
CPCB01J27/138B01J35/50B01J35/40B01J35/39
Inventor 胡寒梅陈建利
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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