N-Doped lepidocrocite nanotubular arrays: hydrothermal formation from anodic TiO2 nanotubes and enhanced visible light photoresponse

被引：13
|
作者：
Nakajima, Tomohiko [1 ,2 ]
Lee, Chong-Yong [2 ]
Yang, Yang [2 ]
Schmuki, Patrik [2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Adv Mfg Res Inst, Tsukuba, Ibaraki, Japan
[2] Univ Erlangen Nurnberg, Dept Mat Sci, WW4 LKO, D-91058 Erlangen, Germany
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 05期
关键词：
THIN-FILMS; NITROGEN; TITANATE; RUTILE;
D O I：
10.1039/c2ta00174h
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
New Cs-lepidocrocite nanotubular arrays were successfully prepared from anodically grown TiO2 nanotubes by hydrothermal conversion using CsOH in a water-ethanol mixed solvent. The obtained open nanotubular structure consists of plate-like nano-crystals, reflecting a preferred facet growth of the lepidocrocite with a 2-dimensional layered crystal structure. N-Doping of the Cs-lepidocrocite nanotubular layer was carried out by annealing in NH3 gas. The N-doped sample showed an incident photon to current conversion efficiency (IPCE) of 1.43% at 450 nm, which is 57% higher than conventional N-doped anatase TiO2 nanotubes.
引用
收藏
页码：1860 / 1866
页数：7
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