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Generalized Synthesis of Ternary Sulfide Hollow Structures with Enhanced Photocatalytic Performance for Degradation and Hydrogen Evolution
- Ding, Shuoping, Liu, Xiufan, Shi, Yiqiu, Liu, Ye, Zhou, Tengfei, Guo, Zaiping, Hu, Juncheng
- ACS applied materials & interfaces 2018 v.10 no.21 pp. 17911-17922
- cadmium, calcium, crystallites, durability, glutathione, hydrogen, hydrogen production, irradiation, magnesium, manganese, microparticles, photocatalysis, sulfides, sulfur, zinc
- A series of ternary sulfide hollow structures have been successfully prepared by a facile glutathione (GSH)-assisted one-step hydrothermal route, where GSH acts as the source of sulfur and bubble template. We demonstrate the feasibility and versatility of this in situ gas-bubble template strategy by the fabrication of novel hollow structures of MIn₂S₄ (M = Cd, Zn, Ca, Mg, and Mn). Interestingly, with the reaction time varying, the hierarchical CdIn₂S₄ microspheres with controlled internal structures can be regulated from yolk–shell, smaller yolk–shell (yolk–shell with shrunk yolk), hollow, to solid. Under visible-light irradiation, all of our prepared CdIn₂S₄ samples with different morphologies were photoactivated. In virtue of the appealing hierarchical hollow structure, the yolk–shell-structured CdIn₂S₄ microspheres exhibited the optimal photocatalytic activity and excellent durability for both the X₃B degradation and H₂ evolution, which can be ascribed to the synergy-promoting effect of the small crystallite size together with the unique structural advantages of the yolk–shell structure. Thus, we hypothesize that this proof-of-concept strategy paves an example of rational design of hollow structured ternary or multinary sulfides with superior photochemical performance, holding great potential for future multifunctional applications.