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https://hdl.handle.net/10356/94963| Title: | Surface treatment of hematite photoanodes with zinc acetate for water oxidation | Authors: | Xi, Lifei Bassi, Prince Saurabh Chiam, Sing Yang Mak, Wai Fatt Tran, Phong D. Barber, James Loo, Say Chye Joachim Wong, Lydia Helena |
Keywords: | DRNTU::Engineering::Materials | Issue Date: | 2012 | Source: | Xi, L., Bassi, P. S., Chiam, S. Y., Mak, W. F., Tran, P. D., Barber, J., et al. (2012). Surface treatment of hematite photoanodes with zinc acetate for water oxidation. Nanoscale, 4(15), 4430-4433. | Series/Report no.: | Nanoscale | Abstract: | A simple and inexpensive method to form a hematite photoanode for efficient water oxidation is reported. A very thin ZnO overlayer was deposited on top of a thin film of hematite and found, compared with non-treated hematite, to increase the photocurrent and reduce the onset potential for generating oxygen from water. After 3 cycles of ZnAc treatment, the photocurrent increased more than 40% to 1.08 mA/cm-2 at 0.23 V vs Ag/AgCl and onset potential for water oxidation shifted by -170 mV. It is proposed the ZnO overlayer changes the flat band potential of hematite and reduces the surface defects. | URI: | https://hdl.handle.net/10356/94963 http://hdl.handle.net/10220/8303 |
DOI: | 10.1039/C2NR30862B | Schools: | School of Materials Science & Engineering | Rights: | © 2012 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, Royal Society of Chemistry . It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1039/C2NR30862B ] | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
| Appears in Collections: | MSE Journal Articles |
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| Surface treatment of hematite photoanodes with zinc acetate for water oxidation.pdf | 557.06 kB | Adobe PDF |  View/Open |
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