期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 73, 页码 31269-31278出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.07.054
关键词
CdS-CoS; S,N-codoped TiO2 nanofibers; Water splitting; Solar-light photocatalysis
资金
- Natural Science Foundations of Qinghai Province [2021-ZJ-718]
- National Innovation and Entrepre- neurship Training Program for Undergraduate [X2021005]
- Guangdong-Dongguan Joint Fund for Basic Research and Applied Basic Research [2020A1515110835]
Solar-light driven water splitting using Cd0.5Co0.5S/SN-TiO2 nano-fibers as catalysts shows excellent photocatalytic activity and durability.
Solar-light driven water splitting acted as an important technology to solve the energy crisis has attracted much more attention. To restrain the recombination rate of charge carriers and enhance the surface activity of TiO2, integrating dual CdS-CoS with S,N-codoped TiO2 with a Cd/Co mole ratio of 1:1 (Cd0.5Co0.5S/SN-TiO2) nano-fibers were fabricated via the electro-spinning and one-pot hydrothermal routes. H-2-evolution rate of Cd0.5Co0.5S/SN-TiO2 nano-fibers was higher than TiO2, CoS/SN-TiO2 and CdS/SN-TiO2 nano-fibers. The optimal 3-Cd0.5Co0.5S/SN-TiO2 with a Cd0.5Co0.5S ratio of 5.0 wt% performed the highest photocatalytic activity (4.55 mmol g(-1) h(-1)), and the best photocatalytic durability after five cycles. It's owing to the hybrid effect of CdS and CoS for efficient transfer and separation of charge carriers at the junction interface between Cd0.5Co0.5S nanoparticles and S,N-codoped TiO2 nanofibers. Meanwhile, the extending visible-light response and sufficient active sites of TiO2-based heterojunctions are favorable for the water splitting. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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