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Non-noble metal Cu as a cocatalyst on TiO2 nanorod for highly efficient photocatalytic hydrogen production

Non-noble metal Cu as a cocatalyst on TiO2 nanorod for highly efficient photocatalytic hydrogen production
Non-noble metal Cu as a cocatalyst on TiO2 nanorod for highly efficient photocatalytic hydrogen production
Nanorod-like TiO2 photocatalysts with controllable particle size for hydrogen production were synthesized based on H2Ti3O7 precursors using hydrothermal and ion exchange methods. The characteristics of TiO2 photocatalysts, such as morphology, specific areas and crystalline quality, can be adjusted by changing hydrothermal conditions, thus optimizing its photocatalytic activity for hydrogen evolution. The TiO2 nanorod possesses the highest photocatalytic activity, even higher than P25, when the hydrothermal temperature is 140 °C, which should be ascribed to its large specific area and good crystalline quality. Non-noble metal Cu as a substitute of Pt was loaded on the surface of TiO2 nanorod to promote the photocatalytic hydrogen production. It was confirmed that, during the photocatalytic reaction process, Cu0 rather than CuOx acted as active sites to enhance the photocatalytic activity. The highest photocatalytic H2 evolution rate of Cu/TiO2 reaches 1023.8 μmol·h−1 when the amount of loading is 0.1 wt%, reaching the 20 times of that of bare TiO2 (49.4 μmol·h−1) and approaching that of Pt/TiO2 (1161.7 μmol·h−1). Non-noble metal Cu not only facilitated the separation of carriers, but reduced the overpotential of hydrogen evolution, thus promoting the photocatalytic activity for hydrogen production.
photocatalyst, hydrogen production, TiO2 nanorod, Cu loading
0169-4332
527-534
Chen, Wei
30ca3fd6-793c-4d28-a5bd-9bc23f29c659
Wang, Yanhong
67204d97-48c7-44cb-9010-87a58b8a777c
Liu, Shuang
6497671c-ee4b-486b-a21e-fa487a825a0b
Gao, Li
9c8b7095-1de1-49ea-afd8-e4206860108a
Miao, Liqun
0b369712-9d42-4651-bd18-5aeba698ba5d
Fan, Zeyun
6c2e8143-44d3-4f53-ae2a-710c1ecc2b94
Shangguan, Wenfeng
c49c13e9-9f5f-4cc3-affd-5a2f21647bf8
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Chen, Wei
30ca3fd6-793c-4d28-a5bd-9bc23f29c659
Wang, Yanhong
67204d97-48c7-44cb-9010-87a58b8a777c
Liu, Shuang
6497671c-ee4b-486b-a21e-fa487a825a0b
Gao, Li
9c8b7095-1de1-49ea-afd8-e4206860108a
Miao, Liqun
0b369712-9d42-4651-bd18-5aeba698ba5d
Fan, Zeyun
6c2e8143-44d3-4f53-ae2a-710c1ecc2b94
Shangguan, Wenfeng
c49c13e9-9f5f-4cc3-affd-5a2f21647bf8
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab

Chen, Wei, Wang, Yanhong, Liu, Shuang, Gao, Li, Miao, Liqun, Fan, Zeyun, Shangguan, Wenfeng and Jiang, Zheng (2018) Non-noble metal Cu as a cocatalyst on TiO2 nanorod for highly efficient photocatalytic hydrogen production. Applied Surface Science, 445 (1), 527-534. (doi:10.1016/j.apsusc.2018.03.209).

Record type: Article

Abstract

Nanorod-like TiO2 photocatalysts with controllable particle size for hydrogen production were synthesized based on H2Ti3O7 precursors using hydrothermal and ion exchange methods. The characteristics of TiO2 photocatalysts, such as morphology, specific areas and crystalline quality, can be adjusted by changing hydrothermal conditions, thus optimizing its photocatalytic activity for hydrogen evolution. The TiO2 nanorod possesses the highest photocatalytic activity, even higher than P25, when the hydrothermal temperature is 140 °C, which should be ascribed to its large specific area and good crystalline quality. Non-noble metal Cu as a substitute of Pt was loaded on the surface of TiO2 nanorod to promote the photocatalytic hydrogen production. It was confirmed that, during the photocatalytic reaction process, Cu0 rather than CuOx acted as active sites to enhance the photocatalytic activity. The highest photocatalytic H2 evolution rate of Cu/TiO2 reaches 1023.8 μmol·h−1 when the amount of loading is 0.1 wt%, reaching the 20 times of that of bare TiO2 (49.4 μmol·h−1) and approaching that of Pt/TiO2 (1161.7 μmol·h−1). Non-noble metal Cu not only facilitated the separation of carriers, but reduced the overpotential of hydrogen evolution, thus promoting the photocatalytic activity for hydrogen production.

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Accepted/In Press date: 25 March 2018
e-pub ahead of print date: 27 March 2018
Published date: 1 July 2018
Keywords: photocatalyst, hydrogen production, TiO2 nanorod, Cu loading

Identifiers

Local EPrints ID: 419515
URI: http://eprints.soton.ac.uk/id/eprint/419515
ISSN: 0169-4332
PURE UUID: baea12b5-4410-44c2-90d8-22d0765f3a00
ORCID for Zheng Jiang: ORCID iD orcid.org/0000-0002-7972-6175

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Date deposited: 13 Apr 2018 16:30
Last modified: 06 Jun 2024 04:14

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Contributors

Author: Wei Chen
Author: Yanhong Wang
Author: Shuang Liu
Author: Li Gao
Author: Liqun Miao
Author: Zeyun Fan
Author: Wenfeng Shangguan
Author: Zheng Jiang ORCID iD

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