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Preparation method of flower-like twin crystal phase Zn<0.2>Cd<0.8>S photocatalytic material

A photocatalytic material, twinning technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. question

Inactive Publication Date: 2020-10-23
HUNAN JINLIANXING SPECIAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of Zn element, Zn x Cd 1-x S is limited in the control of its morphology diversity, which makes it difficult to greatly improve the performance of photocatalytic water splitting to hydrogen production, and limits its further industrial application.

Method used

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  • Preparation method of flower-like twin crystal phase Zn&lt;0.2&gt;Cd&lt;0.8&gt;S photocatalytic material
  • Preparation method of flower-like twin crystal phase Zn&lt;0.2&gt;Cd&lt;0.8&gt;S photocatalytic material
  • Preparation method of flower-like twin crystal phase Zn&lt;0.2&gt;Cd&lt;0.8&gt;S photocatalytic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A flower-like twin phase Zn 0.2 Cd 0.8 The preparation method of S photocatalyst material, comprises the following steps:

[0032] 1) Add 0.1mmol Zn(NO 3 ) 2 ·6H 2 O and 0.9mmol Cd(NO 3 ) 2 4H 2 O was sequentially added to 60 mL deionized water, stirred and dissolved until clear and transparent to obtain a mixed solution; 2) Add 3 mmol CH 4 N 2 S was added to the mixture and kept stirring for 5 minutes until CH 4 N 2 S was completely dissolved until clear and transparent, then transferred to the reactor and added 20ml of water to the reactor for reaction, and kept at 180°C for 4 hours; 3) The product produced after the reaction was a yellow precipitate, and the obtained yellow precipitate was Separation by centrifugation, and then alternately use distilled water and ethanol to clean and wash the product; 4) After washing, the product is dried in an oven at 80°C, and the flower-like twin phase Zn is obtained after drying. 0.2 Cd 0.8 S photocatalytic material,...

Embodiment 2

[0035] A flower-like twin phase Zn 0.2 Cd 0.8 The preparation method of S photocatalyst material, comprises the following steps:

[0036] 1) Add 0.2mmol Zn(NO 3 ) 2 ·6H 2 O and 0.8mmol Cd(NO 3 ) 2 4H 2 O was sequentially added to 60 mL deionized water, stirred and dissolved until clear and transparent to obtain a mixed solution; 2) Add 3 mmol CH 4 N 2 S was added to the mixture and kept stirring for 5 minutes until CH 4 N 2 S was completely dissolved until clear and transparent, then transferred to the reactor and added 20ml of water to the reactor for reaction, and kept at 180°C for 4 hours; 3) The product produced after the reaction was a yellow precipitate, and the obtained yellow precipitate was Separation by centrifugation, and then alternately use distilled water and ethanol to clean and wash the product; 4) After washing, the product is dried in an oven at 80°C, and the flower-like twin phase Zn is obtained after drying. 0.2 Cd 0.8 S photocatalytic material,...

Embodiment 3

[0039] A flower-like twin phase Zn 0.2 Cd 0.8 The preparation method of S photocatalyst material, comprises the following steps:

[0040] 1) Add 0.2mmol Zn(NO 3 ) 2 ·6H 2 O and 0.8mmol Cd(NO 3 ) 2 4H 2 O was sequentially added to 60 mL deionized water, stirred and dissolved until clear and transparent to obtain a mixed solution; 2) Add 4 mmol CH 4 N 2 S was added to the mixture and kept stirring for 5 minutes until CH 4 N 2 S was completely dissolved until clear and transparent, then transferred to the reactor and added 20ml of water to the reactor for reaction, and kept at 180°C for 4 hours; 3) The product produced after the reaction was a yellow precipitate, and the obtained yellow precipitate was Separation by centrifugation, and then alternately use distilled water and ethanol to clean and wash the product; 4) After washing, the product is dried in an oven at 80°C, and the flower-like twin phase Zn is obtained after drying. 0.2 Cd 0.8 S photocatalytic material,...

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Abstract

The invention relates to a preparation method of a flower-like twin crystal phase Zn<0.2>Cd<0.8>S photocatalytic material. The method comprises the following steps: sequentially adding Zn(NO3)<2>.6H2Oand Cd(NO3)<2>.4H2O into deionized water, and stirring until the solution is clear and transparent, thereby obtaining a mixed solution; (2) adding CH4N2S into the mixed solution, stirring for 5-10 minutes, transferring the mixture into a reaction kettle after the CH4N2S is completely dissolved to be clear and transparent, and adding water into the reaction kettle for reaction; 3) alternately washing the product after the reaction with distilled water and ethanol; and 4) after washing, drying the product to obtain the flower-like twin crystal phase Zn<0.2>Cd<0.8>S photocatalytic material. TheZn<0.2>Cd<0.8>S photocatalytic material with the flower-shaped twin-crystal phase structure is synthesized by utilizing a simple one-step hydrothermal method, so that a new morphology is provided forZnxCd<1-x>S, controllable preparation of the morphology can be realized, and very high photocatalytic water decomposition hydrogen production efficiency is obtained. The preparation method of the catalytic material is simple, controllable, environment-friendly and easy for large-scale preparation, and has important further industrial development and application prospects.

Description

technical field [0001] The invention relates to the field of photocatalytic decomposition of water hydrogen production materials, in particular to a flower-like twin phase Zn with special morphology and structure 0.2 Cd 0.8 Preparation method of S photocatalytic material. Background technique [0002] In recent decades, with the continuous growth of global energy demand, research on finding new energy sources has attracted more and more attention. As a secondary energy source, hydrogen energy has many advantages such as cleanness, high efficiency, safety, storability, and transportability. In 1972, two professors A. Fujishima and K. Honda K from the University of Tokyo discovered TiO for the first time. 2 The electrode has the phenomenon of photocatalytic decomposition of water to produce hydrogen, which opens up the research direction of using solar energy to photolyze water to produce hydrogen. [0003] In general, photocatalytic reactions can be divided into two types...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/10B01J37/20C01B3/04C01G11/00
CPCB01J27/04B01J37/10B01J37/20C01G11/006C01B3/042C01P2004/30B01J35/23B01J35/39Y02E60/36
Inventor 陈建春孙毅东潘春旭陈勇刚
Owner HUNAN JINLIANXING SPECIAL MATERIALS CO LTD
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