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Preparation method of nano flower-like VS2 composite particulate CdS photocatalyst

A technology of composite particles and photocatalysts, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low photocatalytic efficiency of CdS, achieve suppression of photocorrosion, and increase of specific surface area , Improve the effect of photocatalytic performance

Active Publication Date: 2019-10-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photocatalytic efficiency of the currently used CdS is not high.

Method used

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  • Preparation method of nano flower-like VS2 composite particulate CdS photocatalyst
  • Preparation method of nano flower-like VS2 composite particulate CdS photocatalyst
  • Preparation method of nano flower-like VS2 composite particulate CdS photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A nanoflower-like VS 2 The preparation method of composite particulate CdS photocatalyst comprises the following steps:

[0026] Step 1: Take 0.5mol of cadmium nitrate, 2mol of sodium metavanadate, 0.01mol of cetylpyridinium bromide and 0.001mol of deoxyribonucleotide triphosphate and mix them to form a mixture;

[0027] Step 2: Add 40ml of ethanol to the mixture, stir magnetically at 500r / min for 15min and dissolve, add 0.15g of thioacetamide, stir magnetically at 500r / min for 0.5h and dissolve to obtain solution A;

[0028] Step 3: Put solution A into a polytetrafluoroethylene liner and seal it, place it in a reaction kettle, and conduct a hydrothermal reaction in a homogeneous reactor at 160°C for 20 hours, and cool to room temperature to obtain solution B; the filling ratio of the liner is 40%;

[0029] Step 4: Take out solution B, after three times of ultrapure water and three times of ethanol alternate suction filtration, the filtrate is vacuum-dried at 60°C for...

Embodiment 2

[0032] A nanoflower-like VS 2 The preparation method of composite particulate CdS photocatalyst comprises the following steps:

[0033] Step 1: Take 1mol of cadmium nitrate, 2mol of sodium metavanadate, 0.02mol of cetylpyridinium bromide and 0.002mol of deoxyribonucleotide triphosphate and mix them to form a mixture;

[0034] Step 2: Add 50ml of ethanol to the mixture, stir magnetically at 600r / min for 15min and dissolve, add 0.2g of thioacetamide, stir magnetically at 600r / min for 1h and dissolve to obtain solution A;

[0035] Step 3: Put solution A into a polytetrafluoroethylene liner and seal it, then place it in a reactor and conduct a hydrothermal reaction in a homogeneous reactor at 160°C for 22 hours, then cool to room temperature to obtain solution B; the filling ratio of the liner is 50%;

[0036] Step 4: Take out solution B, after three times of ultrapure water and three times of ethanol alternate suction filtration, the filtrate is vacuum-dried at 60°C for 6 hours...

Embodiment 3

[0038] A nanoflower-like VS 2 The preparation method of composite particulate CdS photocatalyst comprises the following steps:

[0039] Step 1: Take 1.5mol of cadmium nitrate, 3mol of sodium metavanadate, 0.03mol of cetylpyridinium bromide and 0.003mol of deoxyribonucleotide triphosphate and mix them to form a mixture;

[0040] Step 2: Add 60ml of ethanol to the mixture, stir magnetically at 700r / min for 18min and dissolve, add 0.15g of thioacetamide, stir magnetically at 700r / min for 1.5h and dissolve to obtain solution A;

[0041] Step 3: Put solution A into a polytetrafluoroethylene liner and seal it, place it in a reaction kettle, and conduct a hydrothermal reaction in a homogeneous reactor at 180°C for 24 hours, and cool to room temperature to obtain solution B; the filling ratio of the liner is 60%;

[0042] Step 4: Take out solution B, after three times of ultrapure water and three times of ethanol alternate suction filtration, the filtrate is vacuum-dried at 70°C for...

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Abstract

The invention discloses a preparation method of a nano flower-like VS2 composite particulate CdS photocatalyst. The preparation method comprises the steps that step 1, 0.5-2 mol of cadmium nitrate, 2-4 mol of sodium metavanadate, 0.01-0.05 mol of cetyl pyridinium bromide and 0.001-0.005 mol of deoxy-ribonucleoside triphosphate are taken and mixed to form a mixture; step 2, 40-60 ml of ethanol is added to the mixture, stirred for the first time and dissolved, and 0.15-0.3g of thioacetamide is added, stirred for the second time and dissolved to obtain a solution A; step 3, the solution A is placed in a reaction vessel for hydrothermal reaction at 160-180 DEG C and cooled to the room temperature; and step 4, a solution B is taken out, suction filtration is performed and then filter is dried and ground into powder to obtain the nano flower-like VS2 composite particulate CdS photocatalyst. The prepared nanoflower-like VS2 composite particulate CdS photocatalyst can effectively improve the photocatalytic water splitting performance of CdS.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts and relates to a nano-flower VS 2 The invention discloses a preparation method of composite particulate CdS photocatalyst. Background technique [0002] The depletion of energy resources and the destruction of ecological environment are the two most urgent problems facing modern society. Therefore, photocatalysis can provide new strategies to alleviate these two problems by photocatalytically producing renewable fuels such as hydrogen, methanol, and methane, and by degrading and mineralizing toxic pollutants. Semiconductor photocatalysis has attracted considerable attention due to its potential applications in environmental remediation, especially in the purification of air and wastewater. Semiconductor nanomaterials have become the main focus of research because of their unique optoelectronic properties. [0003] In semiconductors, CdS is a well-known material, usually its crystal phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/10B01J37/10B82Y30/00B82Y40/00C01B3/04
CPCB01J27/04B01J37/10B82Y30/00B82Y40/00C01B3/042C01B2203/1041C01B2203/0277B01J35/39B01J35/61Y02E60/36
Inventor 曹丽云牛梦凡黄剑锋冯亮亮冯永强赵亚娟肖婷徐瑞
Owner SHAANXI UNIV OF SCI & TECH
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