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Preparation method of Zn0.2Cd0.8S / rGO photocatalytic material

A technology of photocatalytic materials and mixed solutions, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as harsh reaction conditions and toxicity, and achieve excellent hydrogen production performance and simple preparation process Easy-to-control, high-purity effects

Inactive Publication Date: 2019-10-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above synthesis process either adopts relatively harsh reaction conditions or uses toxic solvents

Method used

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  • Preparation method of Zn0.2Cd0.8S / rGO photocatalytic material
  • Preparation method of Zn0.2Cd0.8S / rGO photocatalytic material
  • Preparation method of Zn0.2Cd0.8S / rGO photocatalytic material

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Embodiment 1

[0035]Step 1: Take 39.6mL deionized water and add 0.4mL hydrofluoric acid to it and magnetically stir for 5min to form a mixed solution A;

[0036] Step 2: Take 0.25mmol of Zn(Ac) according to the molar ratio of Zn:Cd of 1:4 2 2H 2 O and 1mmol of Cd(NO 3 ) 2 4H 2 O was added to mixed solution A, and magnetically stirred for 10 minutes to form mixed solution B;

[0037] Step 3: Take 2 mmol of thiourea as a sulfur source and add it to the mixed solution B, and magnetically stir for 10 minutes to form a mixed solution C;

[0038] Step 4: Add the mixed solution C into the polytetrafluoroethylene lining at a filling ratio of 40% and react with hydrothermal reaction at 140°C for 12 hours;

[0039] Step 5: After the reaction is completed, the reaction product is centrifuged and washed three times with deionized water and ethanol respectively, dried in vacuum at 60°C for 6 hours, and ground to obtain leaf-like Zn 0.2 Cd 0.8 S powder;

[0040] Step 6: Take 39mL of deionized wat...

Embodiment 2

[0045] Step 1: Take 49.4mL deionized water and add 0.6mL hydrofluoric acid to it and stir magnetically for 10min to form a mixed solution A;

[0046] Step 2: Take 0.5mmol of Zn(Ac) according to the molar ratio of Zn:Cd of 1:4 2 2H 2 O and 2mmol of Cd(NO 3 ) 2 4H 2 O was added to mixed solution A, and magnetically stirred for 20 minutes to form mixed solution B;

[0047] Step 3: Take 4 mmol of thiourea as a sulfur source and add it to the mixed solution B, and magnetically stir for 20 minutes to form a mixed solution C;

[0048] Step 4: Add the mixed solution C into the polytetrafluoroethylene lining at a filling ratio of 50% and react with hydrothermal reaction at 160°C for 24 hours;

[0049] Step 5: After the reaction is completed, the reaction product is centrifugally washed with deionized water and ethanol for 4 times, dried in vacuum at 70°C for 8 hours, and ground to obtain leaf-like Zn 0.2 Cd 0.8 S powder;

[0050] Step 6: Take 48mL of deionized water and add 2mL...

Embodiment 3

[0055] Step 1: Take 59.2mL deionized water and add 0.8mL hydrofluoric acid to it and stir it magnetically for 15min to form a mixed solution A;

[0056] Step 2: Take 0.75mmol of Zn(Ac) according to the molar ratio of Zn:Cd of 1:4 2 2H 2 O and 3mmol of Cd(NO 3 ) 2 4H 2 O was added to mixed solution A, and magnetically stirred for 30 minutes to form mixed solution B;

[0057] Step 3: Take 6 mmol of thiourea as a sulfur source and add it to the mixed solution B, and magnetically stir for 30 minutes to form a mixed solution C;

[0058] Step 4: Add the mixed solution C into the polytetrafluoroethylene lining at a filling ratio of 60% and react with hydrothermal reaction at 180°C for 18 hours;

[0059] Step 5: After the reaction is completed, the reaction product is centrifugally washed with deionized water and ethanol for 5 times, dried in vacuum at 80°C for 10 hours, and ground to obtain leaf-like Zn 0.2 Cd 0.8 S powder;

[0060] Step 6: Take 57mL of deionized water and ad...

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Abstract

The invention relates to a preparation method of a Zn0.2Cd0.8S / rGO photocatalytic material, which comprises the following steps of: preparing a mixed solution A from hydrofluoric acid and H2O; adding zinc acetate dihydrate and cadmium nitrate tetrahydrate into the mixed solution A to obtain a solution B; adding thiourea into the solution B to form a solution C; adding the solution C into a polytetrafluoroethylene lining for hydrothermal reaction; after the reaction is completed, centrifugally washing with deionized water and ethanol, drying and grinding to obtain a leaf-like Zn0.2Cd0.8S material; preparing graphene oxide and deionized water into a solution to form a solution D; adding the prepared Zn0.2Cd0.8S powder into the solution D, and magnetically stirring to form a solution E; adding the solution E into the polytetrafluoroethylene lining for hydrothermal reaction; after the reaction is completed, centrifugally washing with deionized water and ethanol respectively, and dryingand grinding to obtain the Zn0.2Cd0.8S / rGO material powder. The method adopts hydrothermal method to prepare Zn0.2Cd0.8S / rGO material, and has simple process operation, good crystallinity, high purity and excellent performance of the product.

Description

technical field [0001] The invention relates to a preparation method of a photocatalytic material, in particular to a Zn 0.2 Cd 0.8 Preparation method of S / rGO photocatalytic material. Background technique [0002] With the continuous acceleration of industrialization and urbanization, traditional energy sources have been drastically reduced due to massive consumption and non-renewability. Finding new and renewable energy sources has become a major research topic faced by governments and energy experts around the world. As a clean, efficient and sustainable new type of energy, hydrogen energy is regarded as the clean energy with the most development potential in the 21st century, and it is the development direction of human strategic energy. Making full use of solar photocatalytic water splitting to produce hydrogen and degrade organic pollutants is an important way to solve the current energy crisis and environmental problems facing the world. [0003] In today's society...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/10
CPCB01J27/04B01J37/10B01J37/0036B01J35/39
Inventor 殷立雄李慧敏白培杰黄剑锋刘长青孔新刚张浩繁
Owner SHAANXI UNIV OF SCI & TECH
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