Porous TiO2 Nanotubes with Spatially Separated Platinum and CoOx Cocatalysts Produced by Atomic Layer Deposition for Photocatalytic Hydrogen Production

Jiankang Zhang; Zhuobin Yu; Zhe Gao; Huibin Ge; Shichao Zhao; Chaoqiu Chen; Shuai Chen; Xili Tong; Meihua Wang; Zhanfeng Zheng; Yong Qin

doi:10.1002/anie.201611137

journal article Dec 14, 2016

Porous TiO2 Nanotubes with Spatially Separated Platinum and CoOx Cocatalysts Produced by Atomic Layer Deposition for Photocatalytic Hydrogen Production

Jiankang Zhang

Zhuobin Yu

Zhe Gao

Huibin Ge Shichao Zhao

Chaoqiu Chen Shuai Chen

Xili Tong

Meihua Wang Zhanfeng Zheng Yong Qin

Angewandte Chemie International Edition Vol. 56 No. 3 pp. 816-820 · Wiley

View at Publisher Save 10.1002/anie.201611137

Abstract

AbstractEfficient separation of photogenerated electrons and holes, and associated surface reactions, is a crucial aspect of efficient semiconductor photocatalytic systems employed for photocatalytic hydrogen production. A new CoOx/TiO2/Pt photocatalyst produced by template‐assisted atomic layer deposition is reported for photocatalytic hydrogen production on Pt and CoOx dual cocatalysts. Pt nanoclusters acting as electron collectors and active sites for the reduction reaction are deposited on the inner surface of porous TiO2 nanotubes, while CoOx nanoclusters acting as hole collectors and active sites for oxidation reaction are deposited on the outer surface of porous TiO2 nanotubes. A CoOx/TiO2/Pt photocatalyst, comprising ultra‐low concentrations of noble Pt (0.046 wt %) and CoOx (0.019 wt %) deposited simultaneously with one atomic layer deposition cycle, achieves remarkably high photocatalytic efficiency (275.9 μmol h−1), which is nearly five times as high as that of pristine TiO2 nanotubes (56.5 μmol h−1). The highly dispersed Pt and CoOx nanoclusters, porous structure of TiO2 nanotubes with large specific surface area, and the synergetic effect of the spatially separated Pt and CoOx dual cocatalysts contribute to the excellent photocatalytic activity.

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Metrics

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Citations

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References

Details

Published: Dec 14, 2016
Vol/Issue: 56(3)
Pages: 816-820
License: View

Authors

J

Jiankang Zhang

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China; University of Chinese Academy of Sciences Beijing 100049 P.R. China

Z

Zhuobin Yu

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China; University of Chinese Academy of Sciences Beijing 100049 P.R. China

Z

Zhe Gao

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

H

Huibin Ge

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China; University of Chinese Academy of Sciences Beijing 100049 P.R. China

S

Shichao Zhao

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China; University of Chinese Academy of Sciences Beijing 100049 P.R. China

C

Chaoqiu Chen

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

S

Shuai Chen

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

X

Xili Tong

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

M

Meihua Wang

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China; University of Chinese Academy of Sciences Beijing 100049 P.R. China

Z

Zhanfeng Zheng

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

Y

Yong Qin

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 P.R. China

Cite This Article

Jiankang Zhang, Zhuobin Yu, Zhe Gao, et al. (2016). Porous TiO2 Nanotubes with Spatially Separated Platinum and CoOx Cocatalysts Produced by Atomic Layer Deposition for Photocatalytic Hydrogen Production. Angewandte Chemie International Edition, 56(3), 816-820. https://doi.org/10.1002/anie.201611137

Porous TiO2 Nanotubes with Spatially Separated Platinum and CoOx Cocatalysts Produced by Atomic Layer Deposition for Photocatalytic Hydrogen Production

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