Suzuki, Yoshitaka and Xie, Zhirun and Lu, Xunyu and Cheng, Yoke Wang and Amal, Rose and Yun, Hau Ng (2018) Cadmium sulfide Co-catalyst reveals the crystallinity impact of nickel oxide photocathode in photoelectrochemical water splitting. International Journal of Hydrogen Energy. pp. 1-6. ISSN 0360-3199. (In Press / Online First) (In Press / Online First)
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Abstract
Nickel oxide (NiO) with p-type semiconducting behaviour was prepared via a direct anodisation of nickel (Ni) foam followed by calcination treatment. This method offers a direct photoelectrode synthesis without the intermediate step using a pre-synthesised NiO powder. NiO photocathodes with modulated crystallinity were prepared under elevated calcination temperatures. The beneficial effect of having higher crystallinity in generating higher cathodic photocurrent became obvious in the aid of cadmium sulfide (CdS) deposition. It was found that CdS can promote the excited charge transportation of NiO towards water reduction, thus revealing the effect of NiO crystallinity modulation. The role of CdS as co-catalyst rather than a photosensitiser can be useful in the future design of photoelectrodes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nickel oxide; Photocathode; Water splitting; Hydrogen generation |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering |
| Depositing User: | Noorul Farina Arifin |
| Date Deposited: | 07 Feb 2019 08:44 |
| Last Modified: | 07 Feb 2019 08:46 |
| URI: | http://umpir.ump.edu.my/id/eprint/24124 |
| Download Statistic: | View Download Statistics |
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