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Cadmium sulfide nanorod/cuprous sulfide nanoshell heterostructure photocatalyst as well as preparation method and application thereof

A technology of cadmium sulfide nanorods and cuprous sulfide, which is applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem that photocatalysts can only absorb ultraviolet and visible light, etc., to promote photocatalysis The effect of hydrogen production, low production cost and simple operation method

Pending Publication Date: 2021-12-31
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that photocatalysts can only absorb ultraviolet and visible light in the prior art, one of the purposes of the present invention is to provide a nano-cadmium sulfide with broad-spectrum (visible and near-infrared) photocatalytic effect caused by the local plasmon resonance effect. Rod / Cuprous Sulfide Nanoshell Heterostructure Catalysts

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  • Cadmium sulfide nanorod/cuprous sulfide nanoshell heterostructure photocatalyst as well as preparation method and application thereof
  • Cadmium sulfide nanorod/cuprous sulfide nanoshell heterostructure photocatalyst as well as preparation method and application thereof

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preparation example Construction

[0026] A method for preparing a cadmium sulfide nanorod / cuprous sulfide nanoshell heterostructure, the specific steps are as follows:

[0027] Step 1: Synthesis of CdS nanorods by hydrothermal method. Dissolve 2.3 grams of cadmium chloride and 2.3 grams of thiourea in 30 milliliters of ethylenediamine and stir evenly, pour it into a reaction kettle, conduct a hydrothermal reaction at 180°C for 48 hours, and alternately wash the obtained yellow color with absolute ethanol and deionized water Precipitate and dry in air to obtain CdS nanorods.

[0028] It should be noted that this step is the process of preparing cadmium sulfide nanorods by hydrothermal method. The present invention only provides a specific exemplary method so that the skilled person can understand the present invention. Obviously, it is not necessary to realize the purpose of this step. Not limited to the method provided in this step, for example, other methods may also be used to prepare cadmium sulfide, or a ...

Embodiment 1

[0044] First, 2.3 grams of cadmium chloride and 2.3 grams of thiourea were dissolved in 30 milliliters of ethylenediamine and stirred evenly, poured into the reaction kettle, carried out hydrothermal reaction at 180 degrees Celsius for 48 hours, and washed alternately with absolute ethanol and deionized water to obtain A yellow precipitate was obtained and dried in air to obtain cadmium sulfide nanorods.

[0045] The cadmium sulfide nanorods prepared in Example 1 above.

Embodiment 2

[0047] First, 2.3 grams of cadmium chloride and 2.3 grams of thiourea were dissolved in 30 milliliters of ethylenediamine and stirred evenly, poured into the reaction kettle, carried out hydrothermal reaction at 180 degrees Celsius for 48 hours, and washed the obtained yellow color with absolute ethanol and deionized water. Precipitate and dry to obtain cadmium sulfide nanorods. 100 mg of cadmium sulfide nanorods were immersed in 10 ml of hydrazine hydrate / hydrochloric acid mixed solution (pH≈7) and stirred evenly to obtain the first mixed solution. Then, 10 mg of cuprous sulfide was dissolved in 10 ml of hydrazine hydrate / hydrochloric acid mixed solution and fully stirred and dissolved to obtain a second mixed solution. Pour the second mixed solution into the first mixed solution under stirring to obtain a third mixed solution and stir for 10 minutes. Then filter the third mixed solution to obtain a precipitate, wash the obtained precipitate with deionized water, and then va...

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Abstract

The invention belongs to the field of photocatalysts, and relates to a cadmium sulfide nanorod / cuprous sulfide nanoshell heterostructure photocatalyst as well as a preparation method and application thereof. According to the cadmium sulfide nanorod / cuprous sulfide nanoshell heterostructure wide-spectrum (visible and near-infrared) photocatalyst prepared by the invention, cadmium sulfide nanorods are taken as a matrix, and a cuprous sulfide nanoshell layer with a near-infrared absorption effect grows on the surface in situ through cation exchange reaction. On one hand, the cadmium sulfide nanorods as a high-catalytic-activity visible-light-driven photocatalyst and the near-infrared light response property of cuprous sulfide are combined. On the other hand, the cuprous sulfide and cadmium sulfide are tightly combined to form a heterojunction, so that carrier separation is facilitated, and the photocatalytic hydrogen production performance is improved. The cadmium sulfide nanorod / cuprous sulfide nanoshell heterostructure is prepared by adopting a cation exchange reaction, the synthesis process and equipment are simple, the operation process is simple, the production cost is low, the efficiency is high, the reaction period is short, the repeatability is good, and the industrial application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a cadmium sulfide nanorod / cuprous sulfide nanoshell heterostructure with wide-spectrum (visible and near-infrared) photocatalytic effects caused by localized surface plasmon resonance effects and its preparation method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Rapid urbanization and industrialization have led to a shortage of global energy resources, while the use of fossil energy has caused a large amount of toxic chemical pollutants such as carbon dioxide and sulfur dioxide to be released into the environment. Hydrogen energy is a clean energy that can replace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/00B01J35/02C01B3/04
CPCB01J27/04C01B3/042B01J35/50B01J35/39Y02E60/36
Inventor 田健郭奕辰薛艳君王鑫宇崔洪芝
Owner SHANDONG UNIV OF SCI & TECH
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