CdIn2S4纳米粒子修饰花状NiCo2S4增强光催化析氢活性

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-03-09 DOI:10.1016/j.jtice.2025.106042

Yuan Liu , Mengchao Li , Kaiyue Sun, Xiaohui Ma, Liang Geng, Mei Dong, Hualei Zhou

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引用次数: 0

摘要

硫化物中光生载体的快速络合已成为优化光催化制氢的一个重大挑战。方法采用水热法和原位沉积法合成花状NiCo2S4/CdIn2S4 （NCSCIS）微球。CdIn2S4纳米粒子被均匀地装饰在由纳米管组装而成的花状NiCo2S4微球表面，形成多异质结。得益于异质结构，与单一CdIn2S4相比，它们的可见光析氢活性显著增强。其中，最优的15NCSCIS异质结复合材料的析氢速率是独立CdIn2S4的43倍。各种光学和电化学实验证明，异质结显著促进了光致电子-空穴对的分离，提高了析氢活性，增强了可见光吸收，降低了电子转移阻力，从而提高了光催化活性。基于肖特基结的能带势，提出了肖特基结的光催化机理。本研究将为设计具有高催化活性的廉价异质结光催化剂提供新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Flower-like NiCo2S4 decorated by CdIn2S4 nanoparticles for enhanced photocatalytic hydrogen evolution activity

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Flower-like NiCo2S4 decorated by CdIn2S4 nanoparticles for enhanced photocatalytic hydrogen evolution activity

Background

The rapid complexation of photogenerated carriers in sulphides has emerged as a significant challenge in optimizing photocatalytic hydrogen production.

Methods

Flower-like NiCo₂S₄/CdIn₂S₄ (NCSCIS) microspheres were synthesized by hydrothermal treatment and in situ deposition method in this study. CdIn₂S₄ nanoparticles were uniformly decorated on the surface of flower-like NiCo₂S₄ microspheres assembled from nanotubes, forming multi-heterojunctions.

Significant finding

Benefited from the heterostructure, their visible-light photocatalytic activity for hydrogen evolution was notably enhanced compared with that of single CdIn₂S₄. Among them, the hydrogen evolution rate of optimal 15NCSCIS heterojunction composite is 43 times that of independent CdIn₂S₄. Demonstrated by various optical and electrochemical experiments, the heterojunction significantly promoted the separation of photoinduced electron-hole pairs, improved the hydrogen evolution activity, strengthened the visible-light absorption and reduced the electron transfer resistance, thus resulting in the enhancement of photocatalytic activity. The photocatalytic mechanism of Schottky junction was proposed based on their energy band potentials. This work would provide new insights into the design of inexpensive heterojunction photocatalysts with high photocatalytic activity.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.