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Enhanced photoelectrochemical water oxidation by ZnxMyO (M = Ni, Co, K, Na) nanorod arrays

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journal contribution
posted on 2023-06-08, 23:13 authored by Wei Cheat Lee, Giacomo E Canciani, Brnyia O S Alwhshe, Qiao ChenQiao Chen
The present work reports a facile approach to the one-pot solution growth of vertically aligned, doped ZnO nanorod (NR) arrays by chemical bath deposition (CBD). The effects of dopant ions on the final morphologies, electronic band structures and donor densities of ZnO NRs were examined. With the introduction of dopants, the optical band gap energies of the samples were reduced. The photoelectrochemical (PEC) water splitting performances of the doped ZnO NRs were tested. When compared with pristine ZnO NRs, the doped ZnO NRs demonstrated an improvement of at least 15% in the PEC water splitting activity. Na-doped ZnO NRs was the most efficient photoanode, where its photocurrent density was 2.1 times greater than that of pristine ZnO NRs. The mechanism for improved PEC performance was proposed.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

International Journal of Hydrogen Energy

ISSN

0360-3199

Publisher

Elsevier

Issue

1

Volume

41

Page range

123-131

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-11-17

First Open Access (FOA) Date

2017-11-11

First Compliant Deposit (FCD) Date

2015-11-17

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