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• W3153188536 endingPage "160032" @default.
• W3153188536 startingPage "160032" @default.
• W3153188536 abstract "• Ternary g-C 3 N 4 /Ag-Ag 2 S composites were prepared by photoreduction and sulfidation. • g-C 3 N 4 /Ag-Ag 2 S samples showed higher H 2 production rate than the binary composite. • The synergistic effect between Ag and Ag 2 S results in the enhanced performance. • A feasible mechanism for photocatalytic process over g-C 3 N 4 /Ag-Ag 2 S was proposed. Developing a co-catalyst structure with a rational design is necessary to improve the photocatalytic performance. In this work, a series of g-C 3 N 4 /Ag-Ag 2 S photocatalysts were prepared by depositing Ag nanoparticles onto g-C 3 N 4 through photoreduction, followed by a partial sulfidation of Ag into Ag 2 S via a solution method. Various characterizations were employed to investigate the crystal phase, composition, and morphology of the synthesized samples in detail. The evaluation results for photocatalytic H 2 production show that g-C 3 N 4 /Ag-Ag 2 S-8 possesses a H 2 production rate of 223.5 μmol g −1 h −1 when subjected to a 300 W xenon lamp for 5 h, which far exceeds those of the remaining as-prepared samples. Besides, g-C 3 N 4 /Ag-Ag 2 S-8 also exhibits an acceptable photostability in recycling experiments. Based on multiple measurements on the textural properties, optical properties, charge separation performances, and proton reduction abilities of the as-prepared samples, it is believed that the rapid separation of photogenerated carriers and excellent proton capturing ability caused by the rationally designed Ag-Ag 2 S co-catalyst are the two key factors that can result in the efficient photocatalytic H 2 production observed in g-C 3 N 4 /Ag-Ag 2 S. Furthermore, a plausible mechanism for the photocatalytic H 2 production in g-C 3 N 4 /Ag-Ag 2 S is also provided. Thus, this work may provide new insights into the future development of semiconductor composites for photocatalysis." @default.
• W3153188536 created "2021-04-26" @default.
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• W3153188536 date "2021-09-01" @default.
• W3153188536 modified "2023-09-23" @default.
• W3153188536 title "Co-catalyst boosted photocatalytic hydrogen production driven by visible-light over g-C3N4: The synergistic effect between Ag and Ag2S" @default.
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• W3153188536 doi "https://doi.org/10.1016/j.jallcom.2021.160032" @default.
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