Cadmium sulfide two-dimensional nanorod array catalyst and its preparation method and application

Abstract

The invention discloses a cadmium sulfide two-dimensional nanorod array catalyst and its preparation method and application. Take Cd(NO 3 ) 2 ·4H 2 O.CH 4 N 2 A mixture of S and reduced glutathione is a precursor solution. Conductive glass is added to the precursor solution to undergo a hydrothermal reaction to prepare the cadmium sulfide two-dimensional nanorod array catalyst. Its crystal structure is non-centrosymmetric. The hexagonal wurtzite type consists of neatly arranged cadmium sulfide nanorods. The catalyst prepared by the invention can assist the photocatalytic water splitting reaction to produce hydrogen and oxygen under the action of sound waves, and the hydrogen production efficiency in the ultrasonic field of 27kHz can reach 3.6ml / h / g / W.cm ‑2 , breaking the limitations of cadmium sulfide as a traditional photocatalyst, realizing the simultaneous utilization and mutual reinforcement of light energy and sound energy, and providing a new way for photocatalysts to decompose pure water to produce hydrogen and oxygen.

Description

technical field [0001] The invention belongs to the technical field of producing clean energy, and specifically relates to a cadmium sulfide two-dimensional nanorod array catalyst and a preparation method and application thereof. Background technique [0002] Energy shortage and environmental pollution are becoming more and more serious, which have become two major problems restricting the survival and development of human society. Traditional fossil energy reserves are limited, and combustion products are not environmentally friendly enough to meet the needs of sustainable development of human society. Therefore, there is an urgent need to develop and utilize clean energy. Hydrogen energy is recognized as one of the most potential energy carriers in the future due to its high efficiency and clean characteristics. Using solar energy, a clean energy source, to select suitable photocatalysts to split water to produce hydrogen and oxygen has become a research hotspot to solve ...

AI Technical Summary

Problems solved by technology

Photocatalyst water splitting is an ideal and effective way to use renewable energy to solve environmental problems. However, the preparation process of many photocatalysts is complicated, the utilization rate of solar energy is low, and most catalysts cannot completely split water to produce hydrogen and oxygen, and most of them require electrons or The hole sacrificial agent is used as an auxiliary to achieve continuous hydrogen production, but the current problem is that the efficiency is low

Wang's group (Penglei Wang1, PingDeng1, Yuxin Nie1, Yayu Zhao1, Yan Zhang2,3, Lili Xing1 and Xinyu Xue1,2, Nanotechnology 25 (2014) 075501) published a paper using the piezoelectric properties of CdS nanorod arrays to prepare and detect sulfuration Sensors for hydrogen gas, but not photocatalysis and water splitting

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