两种具有增强析氢性能的新型异质结光催化剂的研究

Investigation of Two Novel Heterojunction Photocatalysts with Boosted Hydrogen Evolution Performance.

作者信息

Zhang Kaifeng, Wang Xudong, Su Yanjing

机构信息

Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.

Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China.

出版信息

Nanomaterials (Basel). 2024 Dec 4;14(23):1947. doi: 10.3390/nano14231947.

DOI:10.3390/nano14231947

PMID:39683335

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11643004/

Abstract

Among the reported photocatalysts, ZnInS has garnered significant research interest due to its advantageous layered structure and appropriate band gap. However, achieving rational design and effective interfacial regulation in heterojunctions remains challenging. In this study, we designed two novel heterojunctions: SrTiO@ZnInS and SrCrO@ZnInS. The photocatalytic hydrogen evolution performance of prepared heterojunctions was systematically investigated under different single-wavelength light sources. Without a cocatalyst, the optimized hydrogen evolution efficiency of SrTiO@ZnInS and SrCrO@ZnInS reached 3.27 and 4.6 mmol g. The enhanced photocatalytic performance can be attributed to the formation of a type-II heterojunction, which improves light absorption capabilities and promotes the separation and transfer of photoinduced carriers. This study provides valuable insights into the strategic construction of heterojunctions for photocatalytic water splitting.

摘要

在已报道的光催化剂中，ZnInS因其有利的层状结构和合适的带隙而引起了广泛的研究兴趣。然而，在异质结中实现合理设计和有效的界面调控仍然具有挑战性。在本研究中，我们设计了两种新型异质结：SrTiO@ZnInS和SrCrO@ZnInS。在不同的单波长光源下，系统地研究了所制备异质结的光催化析氢性能。在没有助催化剂的情况下，SrTiO@ZnInS和SrCrO@ZnInS的优化析氢效率分别达到3.27和4.6 mmol g。光催化性能的增强可归因于II型异质结的形成，它提高了光吸收能力，并促进了光生载流子的分离和转移。本研究为光催化水分解异质结的策略构建提供了有价值的见解。