Enhanced photocathodic protection performance of Fe2O3/TiO2 heterojunction for carbon steel under simulated solar light

被引：30

作者：

Cui, Jun ^{[1
]}

Pei, Yuansheng ^{[1
]}

机构：

[1] Beijing Normal Univ, Key Lab Water & Sediment Sci, Minist Educ, Sch Environm, Beijing 100875, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 779卷

基金：

中国国家自然科学基金;

关键词：

Photocathodic protection; Titanium; Fe2O3; Carbon steel; Electrochemistry; CORROSION BEHAVIOR; PHOTOCATALYTIC DEGRADATION; NANOTUBE ARRAYS; ELECTROCHEMICAL NOISE; ANATASE TIO2; RUTILE TIO2; PHOTOELECTRODE; NANOCOMPOSITE; NANOPARTICLES; INHIBITORS;

D O I：

10.1016/j.jallcom.2018.11.281

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：

Titanium dioxide nano array (TNAs) was successfully modified with Fe2O3 (FTNAs) to enhance the photocathodic protection performance for carbon steel. Fe2O3 as a sensitizer captures large quantities of light photons, resulting in a strong light harvest capability of FTNAs. Meanwhile, the bandgap of FTNAs decreased to 2.26 eV, and the photo-generated current densities were 90 and 400 mu A cm(-2) for TNAs and FTNAs under simulated solar light illumination, respectively. The narrowed bandgap and the sensitive photoelectric response together contribute to a good photocathodic protection performance of FTNAs, which was confirmed by the electrochemical impedance spectroscopy and electrochemical noise. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：183 / 192

页数：10

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