Electrodeposition of BiVO4 with needle-like flower architecture for high performance photoelectrochemical splitting of water

Mohamed, Nurul Aida and Arzaee, Nurul Affiqah and Noh, Mohamad Firdaus Mohamad and Ismail, Aznan Fazli and Safaei, Javad and Sagu, Jagdeep S. and Johan, Mohd Rafie and Teridi, Mohd Asri Mat (2021) Electrodeposition of BiVO4 with needle-like flower architecture for high performance photoelectrochemical splitting of water. Ceramics International, 47 (17). pp. 24227-24239. ISSN 0272-8842, DOI https://doi.org/10.1016/j.ceramint.2021.05.134.

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Photoelectrochemical (PEC) water splitting is a green and sustainable approach capable of driving mass hydrogen production in the future. To realize this vision, development of a well-performing photoelectrode is highly demanded. In this comprehensive study, electrodeposition technique was applied for fabricating BiVO4 films by regulating the deposition time from 1 min until 9 min. Interestingly, the morphology, crystallinity, chemical structure, and optical properties of BiVO4 films depend strongly on the deposition time. It is found that BiVO4 layer deposited for 7 min with a cross-section thickness of around 321.1-326.5 nm showed the optimum performance, whereby the photocurrent reached up to similar to 0.32 mA/cm(-2) at 1.23 V vs. RHE. The deposited BiVO4 represents tiny and long petals, similar to ``needle'' nanostructures, which is embedded closely into compact agglomerates. Such morphology enables the BiVO4 films to perform efficiently as photoanode in PEC cells. Besides, high crystallinity is detected from the sharp peaks of XRD and Raman analysis, as well as good light absorption capability that are the main contributors to the enhancement of PEC performance. In addition to the facile fabrication offered by electrodeposition method, the non-toxic attributes and the impressive PEC performance of the optimum BiVO4 layer could serve as an interesting option for other applications such as gas sensors, solar cells, degradation of pollutants and photocatalytic water splitting.

Item Type: Article
Funders: None
Uncontrolled Keywords: Electrodeposition (ED) method; Nano-flower structures; Water splitting; BiVO4
Subjects: Q Science > Q Science (General)
Divisions: Nanotechnology & Catalysis Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 18 Jul 2022 02:47
Last Modified: 18 Jul 2022 02:47
URI: http://eprints.um.edu.my/id/eprint/33896

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