Rapid Screening of Effective Dopants for Fe2O3 Photocatalysts with Scanning Electrochemical Microscopy and Investigation of Their Photoelectrochemical Properties

被引：139

作者：

Jang, Jum Suk ^{[1
]}

Lee, Joowook ^{[1
]}

Ye, Heechang ^{[1
]}

Fan, Fu-Ren F. ^{[1
]}

Bard, Allen J. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Chem & Biochem, Ctr Electrochem, Austin, TX 78712 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 16期

关键词：

THIN-FILMS; WATER; OXIDATION;

D O I：

10.1021/jp8109429

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：

Scanning electrochemical microscopy in the photoelectrochemical (PEC) mode was used to search for more efficient doped iron oxide photocatalysts under visible light irradiation (lambda >= 420 nm). Iron oxide doped with one or two different metal cations was investigated to improve its PEC performance. Among various dopants, Sn or Ti as single dopants and Be or Al as codopants showed an improved photocurrent response of Fe2O3 under visible light irradiation (lambda >= 420 nm). Fe2O3 doped with 4% Sn(IV) and 6% Be(II) showed the highest photocurrent as well as a good photosensitivity and stability in alkali solution (0.2 M NaOH) under UV and visible light irradiation.

引用

页码：6719 / 6724

页数：6

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