Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode

IMR OpenIR

	Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode
	Chen, Hongjun; Lyu, Miaoqiang; Liu, Gang; Wang, Lianzhou; Wang, LZ (reprint author), Univ Queensland, Sch Chem Engn, Nanomat Ctr, St Lucia, Qld 4072, Australia.; Wang, LZ (reprint author), Univ Queensland, Australian Inst Bioengn & Nanotechnol, St Lucia, Qld 4072, Australia.; Liu, G (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2016-03-24
发表期刊	CHEMISTRY-A EUROPEAN JOURNAL
ISSN	0947-6539
卷号	22 期号:14 页码:4802-4808
摘要	A simple, wet-chemical method for the synthesis of an FeOOH nanorod-array photoelectrode on fluorine-doped tin oxide (FTO) glass is reported. Nanorods of diameter about 35nm and length about 300nm have been vertically grown on an FTO substrate. Upon calcination, the FeOOH phase could be easily converted to a hematite structure while maintaining the shape of the nanorod array. An interesting abnormal cathodic photocurrent is generated on the FeOOH nanorod-array photoelectrode under illumination, which is totally different from that obtained on a calcined hematite photoelectrode under the same experimental conditions. The cathodic photocurrent density generated on the FeOOH photoelectrode can also be tuned by applying an electrochemical anodic or cathodic treatment. Detailed analysis has revealed that higher valence state Fe-IV species in the FeOOH photoelectrode play an important role in sacrificing the photoexcited electrons for generation of the cathodic photocurrent. Comparison between the FeOOH and hematite photoelectrodes allows for a better understanding of the interplay between crystal structure, surface reactions, and photocurrent. The findings on this new abnormal phenomenon could also provide guidance for the design of new types of semiconducting photoelectrochemical devices.
部门归属	[chen, hongjun ; lyu, miaoqiang ; wang, lianzhou] univ queensland, sch chem engn, nanomat ctr, st lucia, qld 4072, australia ; [chen, hongjun ; lyu, miaoqiang ; wang, lianzhou] univ queensland, australian inst bioengn & nanotechnol, st lucia, qld 4072, australia ; [liu, gang] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Iron Oxides Nanorod Arrays Nanostructures Photocurrent Water Splitting
学科领域	Chemistry
资助者	Australian Research Council; University of Queensland
收录类别	sci
语种	英语
WOS记录号	WOS:000373163100023
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75931
专题	中国科学院金属研究所
通讯作者	Wang, LZ (reprint author), Univ Queensland, Sch Chem Engn, Nanomat Ctr, St Lucia, Qld 4072, Australia.; Wang, LZ (reprint author), Univ Queensland, Australian Inst Bioengn & Nanotechnol, St Lucia, Qld 4072, Australia.; Liu, G (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Chen, Hongjun,Lyu, Miaoqiang,Liu, Gang,et al. Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode[J]. CHEMISTRY-A EUROPEAN JOURNAL,2016,22(14):4802-4808.
APA	Chen, Hongjun.,Lyu, Miaoqiang.,Liu, Gang.,Wang, Lianzhou.,Wang, LZ .,...&Liu, G .(2016).Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode.CHEMISTRY-A EUROPEAN JOURNAL,22(14),4802-4808.
MLA	Chen, Hongjun,et al."Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode".CHEMISTRY-A EUROPEAN JOURNAL 22.14(2016):4802-4808.