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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.
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: ]
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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