Uniform Doping of Titanium in Hematite Nanorods for Efficient Photoelectrochemical Water Splitting

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Uniform Doping of Titanium in Hematite Nanorods for Efficient Photoelectrochemical Water Splitting
	Wang, DG; Chen, HC; Chang, GL; Lin, X; Zhang, YY; Aldalbahi, A; Peng, C; Wang, JQ; Fan, CH; Aldalbahi, A (reprint author), King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia.
	2015
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	7 期号:25 页码:14072—14078
文章类型	期刊文献
摘要	Doping elements in hematite nanostructures is a promising approach to improve the photoelectrochemical (PEC) water-splitting performance of hematite photoanodes. However, uniform doping with precise control on doping amount and morphology is the major challenge for quantitatively investigating the PEC water-splitting enhancement. Here, we report on the design and synthesis of uniform titanium (Ti)-doped hematite nanorods with precise control of the Ti amount and morphology for highly effective PEC water splitting using an atomic layer deposition assisted solid-state diffusion method. We found that Ti doping promoted band bending and increased the carrier density as well as the surface state. Remarkably, these uniformly doped hematite nanorods exhibited high PEC performance with a pronounced photocurrent density of 2.28 mA/cm(2) at 1.23 V vs reversible hydrogen electrode (RHE) and 4.18 mA/cm(2) at 1.70 V vs RHE, respectively. Furthermore, as-prepared Ti-doping hematite nanorods performed excellent repeatability and durability; over 80% of the as-fabricated photoanodes reproduced the steady photocurrent density of 1.9-2.2 mA/cm(2) at 1.23 V vs RHE at least 3 h in a strong alkaline electrolyte solution.
关键词	Atomic Layer Deposition Oxidation Photoanodes Oxide Electrodes Arrays Nanostructures Activation Nanowires Dynamics
语种	英语
WOS记录号	WOS:000357436800041
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/25091
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Aldalbahi, A (reprint author), King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia.
推荐引用方式 GB/T 7714	Wang, DG,Chen, HC,Chang, GL,et al. Uniform Doping of Titanium in Hematite Nanorods for Efficient Photoelectrochemical Water Splitting[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(25):14072—14078.
APA	Wang, DG.,Chen, HC.,Chang, GL.,Lin, X.,Zhang, YY.,...&Aldalbahi, A .(2015).Uniform Doping of Titanium in Hematite Nanorods for Efficient Photoelectrochemical Water Splitting.ACS APPLIED MATERIALS & INTERFACES,7(25),14072—14078.
MLA	Wang, DG,et al."Uniform Doping of Titanium in Hematite Nanorods for Efficient Photoelectrochemical Water Splitting".ACS APPLIED MATERIALS & INTERFACES 7.25(2015):14072—14078.

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