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Updated: Feb 22, 2026
Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
Published on: July 25, 2025
One-Pot Synthesis of Size-Controllable Core-Shell CdS and Derived CdS@Znx Cd1-x S Structures for Photocatalytic
Shuangshuang Kai1, Baojuan Xi1, Yifeng Wang1
1Key Laboratory of the Colloid and Interface Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
Abstract:
Chalcogenide micro/nanocomposite structures have been attracting worldwide attention due to prospective applications in photocatalytic hydrogen production. Well-defined micro/nanostructures with pronounced properties are of extraordinary importance. Herein, a facile one-pot method for the synthesis of monodisperse, size-controllable CdS core-shell and CdS@Znx Cd1-x S core-double shell submicrospheres, which were engineered with respect to structure and size, is reported. CdS core-shell submicrospheres with different sizes were selectively prepared for the first time. The growth mechanism was investigated in detail by monitoring the time-dependent morphology of intermediates by TEM. By introduction of a zinc precursor in the synthetic system, CdS@Znx Cd1-x S core-double shell submicrospheres were obtained by cation exchange of CdS with zinc ions, with a process of diffusion of CdS towards the outside and transformation of Znx Cd1-x S crystallites. The H2 evolution rate over CdS@Cdx Zn1-x S (5.17 mmol h-1 g-1 ) is 12.3 times that of CdS core-shell structures (0.42 mmol h-1 g-1 ) under visible light, owing to the efficient charge separation, as demonstrated by electrochemical impedance and transient-state time-resolved photoluminescence spectroscopy. Furthermore, CdS@Znx Cd1-x S core-double shell structures exhibited excellent stability over 20 h of hydrogen production.
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