New Co(OH)2/CdS nanowires for efficient visible light photocatalytic hydrogen production

Xuan Zhou, Jian Jin, Xunjin ZHU*, Jun Huang, Jiaguo Yu, Wai Yeung WONG, Rick W K WONG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

Through a facile impregnation synthesis, new noble-metal-free Co(OH)2/CdS nanowires (NWs) have been developed for photocatalytic hydrogen production. The loading of Co(OH)2 on CdS NWs can effectively accelerate the charge separation and transfer in photocatalytic reactions, leading to an enhanced H2 production rate (HPR). The optimum HPR based on Co(OH)2/CdS reaches 14.43 mmol h-1 g-1 under visible light (λ ≥ 420 nm) irradiation, which is 206 times higher than for the pristine CdS NWs and even 3 times higher than for 1 wt% Pt/CdS NWs as a benchmark. Impressively, core-shell structural Co(OH)2/CdS NWs formed by visible-light-induced self-assembly during the photocatalytic reaction. And the core-shell structural characteristics of the Co(OH)2/CdS NWs can effectively avoid light corrosion, leading to a stable HPR in 12 hours duration.

Original languageEnglish
Pages (from-to)5282-5287
Number of pages6
JournalJournal of Materials Chemistry A
Volume4
Issue number14
DOIs
Publication statusPublished - 2016

Scopus Subject Areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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