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

Lee, Wei Cheat, Canciani, Giacomo E, Alwhshe, Brnyia O S and Chen, Qiao (2016) Enhanced photoelectrochemical water oxidation by ZnxMyO (M = Ni, Co, K, Na) nanorod arrays. International Journal of Hydrogen Energy, 41 (1). pp. 123-131. ISSN 0360-3199

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Abstract

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.

Item Type: Article
Keywords: Doped ZnO nanorod arrays; Chemical bath deposition; Photocatalyst; Water splitting
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry > QD0450 Physical and theoretical chemistry > QD0701 Photochemistry
Depositing User: Wei Cheat Lee
Date Deposited: 17 Nov 2015 11:58
Last Modified: 24 Mar 2017 13:00
URI: http://sro.sussex.ac.uk/id/eprint/58032

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