论文名称： Physical and photoelectrochemical properties of Zr-doped hematite nanorod arrays
作者： Shen, Shaohua (1, 2); Guo, Penghui (1); Wheeler, Damon A. (3); Jiang, Jiangang (1); Lindley, Sarah A. (3); Kronawitter, Coleman X. (2); Zhang, Jin Z. (3); Guo, Liejin (1); Mao, Samuel S. (2)
来源出版物： Nanoscale
年卷期页： 2013,5(20):9867-9874
收录类型： SCI:226AC,WOS:000325005500057;EI:20134116824275
论文简介： This work examines the effect of Zr(4+) ions on the physical and photoelectrochemical (PEC) properties of hematite (伪-Fe2O3) nanorod arrays grown in an aqueous solution containing zirconyl nitrate (ZrO(NO3)2) as a dopant precursor. The concentration of ZrO(NO3)2 in the precursor solution influenced both the film thickness and the Zr(4+) concentration in the resulting films. Zr doping was found to enhance the photocurrent for water splitting; the highest photocurrent at 1.0 V vs. Ag/AgCl (0.33 mA cm(-2)) for the Zr-doped 伪-Fe2O3 film was approximately 7.2 times higher than that for the undoped film (0.045 mA cm(-2)). Additionally, the incident photon to current efficiency (IPCE) at 360 nm and 1.23 V vs. the reversible hydrogen electrode (RHE) increased from 3.8% to 13.6%. Ultrafast transient absorption spectroscopy suggests that Zr doping may influence PEC performance by reducing the rate of electron-hole recombination.
原文链接： Physical and photoelectrochemical properties of Zr-doped hematite nanorod arrays