2D/2D Pt SA-MoS2/ZnIn2S4光催化剂促进制氢的设计

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-07-14 DOI:10.1016/j.cej.2025.165713

Xue-Lu Chen, Miao Ni, Yan-Ru Li, Yi-An Pan, Chen Chi, Yi Yang, Si-Meng Li, Sudip Biswas, Yi-Bai Sun, Xing-Hua Xia

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引用次数: 0

摘要

单原子光催化剂的特殊性能在提高高效光催化水分解反应中起着至关重要的作用。然而，精确构建合适的单原子催化剂-半导体结构是必不可少的，但仍然具有挑战性。本文通过在二维（2D） MoS2纳米片上锚定Pt单原子（SAs），构建了一种高性能光催化剂，该催化剂作为助催化剂与二维六边形ZnIn2S4 （h-ZIS）纳米片相干连接。这种2D/2D异质结构促进了光生载流子的高效分离和转移。优化后的2D/2D Pt SA-MoS2/h- zis纳米复合材料的释氢速率为13.3 mmol·h−1·g−1，周转频率为3342 h−1。这种优异的性能归功于二维/二维相干结构的协同效应导致h-ZIS的能带结构被调制，光生载流子的电荷分离和转移得到改善，以及高活性的铂单原子析氢反应（HER）助催化剂。该研究为合理设计高效的单原子光催化剂提供了战略见解。

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Design of 2D/2D Pt SA-MoS2/ZnIn2S4 photocatalysts for boosting hydrogen production

The exceptional capabilities of single-atom photocatalysts play a crucial role in enhancing efficient photocatalytic water-splitting reactions. However, the precise construction of an appropriate single atom catalysts-semiconductor configuration is essential but remains challenging. Here we construct a high-performance photocatalyst by anchoring Pt single atoms (SAs) on a two-dimensional (2D) MoS₂ nanosheet, which serves as a cocatalyst coherently connected to 2D hexagonal ZnIn₂S₄ (h-ZIS) nanosheets. This 2D/2D heterostructure promotes highly efficient separation and transfer of photogenerated carriers. An optimized nanocomposite, 2D/2D Pt SA-MoS₂/h-ZIS, achieves a hydrogen evolution rate of 13.3 mmol·h⁻¹·g⁻¹ and a remarkable turnover frequency of 3342 h⁻¹. The outstanding performance is attributed to the synergistic effect of the coherent 2D/2D structure that leads to a modulated band structure of h-ZIS, improved charge separation and transfer of photogenerated carriers, and the highly active platinum single atom cocatalyst for hydrogen evolution reaction (HER). This study provides strategic insights for the rational design of efficient single-atom photocatalysts.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.