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https://hdl.handle.net/2440/138127
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Type: | Journal article |
Title: | Synthesis of Bandgap-tunable Transition Metal Sulfides through Gas-phase Cation Exchange-induced Topological Transformation |
Author: | Da, P. Zheng, Y. Hu, Y. Wu, Z. Zhao, H. Wei, Y. Guo, L. Wang, J. Wei, Y. Xi, S. Yan, C.H. Xi, P. |
Citation: | Angewandte Chemie International Edition, 2023; 62(18):1-8 |
Publisher: | Wiley-VCH GmbH |
Issue Date: | 2023 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Pengfei Da, Yao Zheng, Yang Hu, Zelong Wu, Hongyu Zhao, Yicheng Wei, Linchuan Guo, Jingjing Wang, Yanping Wei, Shibo Xi, Chun-Hua Yan, and Pinxian Xi |
Abstract: | Oriented synthesis of transition metal sulfides (TMSs) with controlled compositions and crystal structures has long been promising for electronic devices and energy applications. Liquid-phase cation exchange (LCE) is a well-studied route by varying the compositions. However, achieving crystal structure selectivity is still a great challenge. Here, we demonstrate gas-phase cation exchange (GCE), which can induce a specific topological transformation (TT), for the synthesis of versatile TMSs with identified cubic or hexagonal crystal structures. The parallel six-sided subunit (PSS), a new descriptor, is defined to describe the substitution of cations and the transition of the anion sublattice. Under this principle, the bandgap of targeted TMSs can be tailored. Using the photocatalytic hydrogen evolution as an example, the optimal hydrogen evolution rate of a zinc-cadmium sulfide (ZCS4) is determined to be 11.59 mmol h-1 g-1, showing a 36.2-fold improvement over CdS. |
Keywords: | Bandgap Engineering Cation Exchange Photocatalytic Hydrogen Evolution Topological Transformation Transition Metal Sulfides |
Rights: | © 2023 Wiley-VCH GmbH. |
DOI: | 10.1002/anie.202301802 |
Grant ID: | http://purl.org/au-research/grants/arc/DP190103472 http://purl.org/au-research/grants/arc/FT200100062 |
Published version: | http://dx.doi.org/10.1002/anie.202301802 |
Appears in Collections: | Chemical Engineering publications |
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