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

doi:10.1039/c6ta00325g

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

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

118 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 language	English
Pages (from-to)	5282-5287
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	4
Issue number	14
DOIs	https://doi.org/10.1039/c6ta00325g
Publication status	Published - 2016

Scopus Subject Areas

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

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Access to Document

10.1039/c6ta00325g

Cite this

@article{5a7574cdc23f4758abc52f94c2b3a051,

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

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.",

author = "Xuan Zhou and Jian Jin and Xunjin ZHU and Jun Huang and Jiaguo Yu and WONG, {Wai Yeung} and WONG, {Rick W K}",

note = "Funding Information: We thank the National Natural Science Foundation of China (NSFC) (Grant No. 91222201, 51473053 and 91333206), Hong Kong Research Grants Council (HKBU 22304115, HKBU 203011) and Hong Kong Baptist University (FRG2/14-15/034, FRG1/14-15/058 and FRG2/13-14/083) for the financial support. W.-K. Wong and W.-Y. Wong acknowledge the support from the Areas of Excellence Scheme, University Grants Committee, Hong Kong SAR ([AoE/P-03/08]).",

year = "2016",

doi = "10.1039/c6ta00325g",

language = "English",

volume = "4",

pages = "5282--5287",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - New Co(OH)2/CdS nanowires for efficient visible light photocatalytic hydrogen production

AU - Zhou, Xuan

AU - Jin, Jian

AU - ZHU, Xunjin

AU - Huang, Jun

AU - Yu, Jiaguo

AU - WONG, Wai Yeung

AU - WONG, Rick W K

N1 - Funding Information: We thank the National Natural Science Foundation of China (NSFC) (Grant No. 91222201, 51473053 and 91333206), Hong Kong Research Grants Council (HKBU 22304115, HKBU 203011) and Hong Kong Baptist University (FRG2/14-15/034, FRG1/14-15/058 and FRG2/13-14/083) for the financial support. W.-K. Wong and W.-Y. Wong acknowledge the support from the Areas of Excellence Scheme, University Grants Committee, Hong Kong SAR ([AoE/P-03/08]).

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

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