CdS nanorods decorated with non-precious metal Bi spheres for photocatalytic hydrogen production

纳米棒 光催化 材料科学 制氢 金属 化学工程 贵金属 纳米技术 球体 冶金 催化作用 化学 有机化学 物理 天文 工程类
作者
Wen Tang,Linxiu Luo,Zheyuan Fan,Aiqin Zhang,Yongcun Ma,Yu Xie,Jinsheng Zhao
出处
期刊:Materials Today Chemistry [Elsevier BV]
卷期号:37: 102000-102000 被引量:2
标识
DOI:10.1016/j.mtchem.2024.102000
摘要

It is well known that precious metals decoration strategies can effectively improve the charge separation efficiency. Unfortunately, the high price limits their large-scale application. Nevertheless, the cheap transition metal Bi has a similar effect as precious metals. Therefore, we take a simple solvothermal method to reduce and aggregate Bi 3+ into bismuth nano-spheres (Bi 0 ). CdS nanorods were modified with Bi spheres to create a hybrid material called x% Bi–CdS, which combines a metal and a semiconductor for photocatalytic hydrogen production . The results of the experiment indicate that the hydrogen evolution rate of the 5% Bi–CdS sample is 1501.52 μmol g −1 h −1 , which is 4.2 times greater than that of pure CdS nanorods . This significant enhancement in photocatalytic activity can be attributed to the presence of Bi spheres, which induce a surface plasmon resonance (SPR) effect. This effect boosts the absorption of visible light and enhances the separation efficiency of charge carriers. The study not only provides a solution for the preparation of low-cost CdS-based materials, but also confirms the feasibility of inexpensive Bi metals to replace precious metals as co-catalysts to improve the photocatalytic efficiency. • A series of Bi–CdS hybrid materials were prepared by modifying CdS with cheap Bi metal. • Boosts the absorption of visible light and enhances the separation efficiency of charge carriers. • A hydrogen production rate of 1501.52 μmol/(g·h) was achieved via this strategy.
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