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Enhanced photoelectrochemical water oxidation by ZnxMyO (M = Ni, Co, K, Na) nanorod arrays
journal contribution
posted on 2023-06-08, 23:13 authored by Wei Cheat Lee, Giacomo E Canciani, Brnyia O S Alwhshe, Qiao ChenQiao ChenThe 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 EnergyISSN
0360-3199Publisher
ElsevierExternal DOI
Issue
1Volume
41Page range
123-131Department affiliated with
- Chemistry Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2015-11-17First Open Access (FOA) Date
2017-11-11First Compliant Deposit (FCD) Date
2015-11-17Usage metrics
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