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Cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material and preparation method thereof

A technology of nanorod array and photocatalytic material, which is applied in the field of cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material and its preparation, can solve the problem of few surface active sites, high recombination probability of photogenerated carriers, Low utilization rate of visible light and other problems, to achieve the effect of improved photocatalytic performance, simple preparation method, and controllable loading amount

Inactive Publication Date: 2016-06-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material and its preparation method, the cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material can effectively control quantum dots The loading capacity can solve the problems of high recombination probability of photogenerated carriers, few surface active sites and low utilization rate of visible light in photocatalytic materials, and the preparation method involved is simple, suitable for popularization and application

Method used

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  • Cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material and preparation method thereof
  • Cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material and preparation method thereof
  • Cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material and preparation method thereof

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Embodiment 1

[0035] A cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material, the preparation method of which comprises the following steps:

[0036] 1) 0.75molZn(Ac) 2 (zinc acetate) and 0.75molC 2 h 7 Disperse NO (ethanolamine) in 50mL of ethylene glycol methyl ether, transfer it to a two-necked flask, pass in inert gas Ar and keep stirring, then place it in an oil bath at 60°C for 30 minutes, and transfer it to an Erlenmeyer flask after cooling to room temperature Medium aging for 24h, to get ZnO sol;

[0037] 2) The obtained ZnO sol is spin-coated onto the clean FTO glass surface by a desktop homogenizer under the condition of low speed and high speed (low speed is 600r / min, high speed is 1300r / min);

[0038] 3) Put the glass sheet evenly coated with ZnO sol in step 2) into a muffle furnace and heat it at a heating rate of 5°C / min to 300°C for 10 minutes, then cool it naturally to room temperature and take it out to obtain ZnO crystal seeds;

[0039]...

Embodiment 2

[0049] A cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material, the preparation method of which comprises the following steps:

[0050] 1) 0.75molZn(Ac) 2 (zinc acetate) and 1.5molC 2 h 7 Disperse NO (ethanolamine) in 50mL of ethylene glycol methyl ether, transfer to a two-necked flask, pass in an inert gas Ar and keep stirring, then place it in an oil bath at 45°C for 40 minutes, and transfer it to an Erlenmeyer flask after cooling to room temperature Medium aging for 48h, to get ZnO sol;

[0051] 2) The obtained ZnO sol is spin-coated onto the clean FTO glass surface by a desktop homogenizer under the condition of low speed and high speed (low speed is 600r / min, high speed is 1300r / min);

[0052] 3) Put the glass sheet evenly coated with ZnO sol in step 2) into a muffle furnace and heat it at a heating rate of 1°C / min to 400°C for 10 minutes, then cool it naturally to room temperature and take it out to obtain ZnO crystal seeds;

[0053] ...

Embodiment 3

[0058] A cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material, the preparation method of which comprises the following steps:

[0059] 1) 0.75molZn(Ac) 2 (zinc acetate) and 0.75molC 2 h 7 Disperse NO (ethanolamine) in 50mL of ethylene glycol methyl ether, transfer it to a two-necked flask, pass in inert gas Ar and keep stirring, then place it in an oil bath at 60°C for 30 minutes, and transfer it to an Erlenmeyer flask after cooling to room temperature Medium aging for 24h, to get ZnO sol;

[0060] 2) The obtained ZnO sol is spin-coated onto the clean FTO glass surface by a desktop homogenizer under the condition of low speed and high speed (low speed is 600r / min, high speed is 1300r / min);

[0061] 3) Put the glass sheet evenly coated with ZnO sol in step 2) into a muffle furnace and heat it at a heating rate of 5°C / min to 300°C for 10 minutes, then cool it naturally to room temperature and take it out to obtain ZnO crystal seeds;

[0062]...

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Abstract

The invention discloses a cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material and a preparation method thereof. A zinc oxide nanorod is prepared through a sol-hydrothermal method, a continuous ionic depositing method is combined, CdS quantum dots are deposited on the zinc oxide nanorod surface, the related method is simple and few in side reaction, and quantum dot bear loads are controllable; the steps of ZnO nanorod array generation and CdS quantum dot deposition are repeated, preparation of the zinc oxide core-shell multilayer nanorod array photocatalytic material can be achieved, and the load rate of the quantum dots is effectively increased. The cadmium sulfide and zinc oxide core-shell multilayer nanorod array photocatalytic material can effectively control the quantum dot bear loads, and the problems that the photocatalytic material is high in photon-generated carrier compound probability, few in surface activity site and the like are solved; a multilayer nanorod structure can have refraction on sunlight, and improvement of the utilization rate on light energy is facilitated; the related preparation method is simple and suitable for application and promotion.

Description

technical field [0001] The invention belongs to the technical field of energy material manufacturing, and in particular relates to a cadmium sulfide-zinc oxide core-shell multilayer nanorod array photocatalytic material and a preparation method thereof. Background technique [0002] Energy is an important material basis for human survival and development, and with the continuous exploitation of fossil energy, the depletion of global fossil energy is unavoidable. Therefore, the development of clean and renewable energy is a major problem faced by countries all over the world. Hydrogen is the most abundant element in the universe. As an efficient secondary energy source, it is non-polluting to the environment, and most of the hydrogen is obtained from steam reforming. Therefore, the photocatalytic water splitting hydrogen production technology is considered to be the "Holy Grail" of chemistry. . Sunlight is inexhaustible. Using photocatalysis to obtain hydrogen, which is use...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/10B82Y30/00B82Y40/00C01B3/04
CPCB82Y30/00B82Y40/00C01B3/042B01J27/04C01B2203/1041C01B2203/1017C01B2203/0277B01J35/60B01J35/39Y02E60/36Y02P20/133
Inventor 李昱闫晓婷刘婧王超黄华文吴旻陈丽华王洪恩苏宝连
Owner WUHAN UNIV OF TECH
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