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
ISSN1944-8244
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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