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Physical and photoelectrochemical properties of Zr-doped hematite nanorod arrays.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shen, Shaohua Guo, Penghui Wheeler, Damon A. Jiang, Jiangang Lindley, Sarah A. Kronawitter, Coleman X. Zhang, Jin Zhong Guo, Liejin Mao, Samuel S. |
| Copyright Year | 2013 |
| Abstract | This work examines the effect of Zr(4+) ions on the physical and photoelectrochemical (PEC) properties of hematite (α-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 α-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. |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c3nr03245k |
| PubMed reference number | 23974247 |
| Journal | Medline |
| Volume Number | 5 |
| Issue Number | 20 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/nr/c3/c3nr03245k/c3nr03245k.pdf |
| Alternate Webpage(s) | http://or.nsfc.gov.cn/bitstream/00001903-5/77282/1/1000007172316.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c3nr03245k |
| Journal | Nanoscale |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
