Preparation of lotus-root-typed TiO2 nanotubes by NH4F/KF based electrolyte and its efficient photocathodic protection for 304 stainless steel

被引：7

作者：

Li, Jianmin ^{[1
]}

Wang, Tongtong ^{[1
]}

Yu, Jiahui ^{[1
]}

Gao, Rongjie ^{[1
]}

机构：

[1] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 337卷

基金：

中国国家自然科学基金;

关键词：

TiO2 nanotube array; Lotus-root-type porous structure; Anodization; Photoelectrochemical; Photocathodic protection;

D O I：

10.1016/j.matlet.2023.133941

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A highly ordered lotus-root-typed TiO2 nanotube array (TNTAs) was prepared by two-step electrochemical anodization in a novel NH4F/KF-based electrolyte. The effects of different morphologies of TiO2 nanotubes on the photoelectrochemical properties of TNTAs were studied. The photoelectrochemical properties of TNTAs were evaluated by measuring the photocurrent density-time curve. The photocathodic protection performance of TNTAs on 304 stainless steel was evaluated by measuring open circuit potential and Tafel curve. The results showed that the TNTAs with lotus-root-type porous structures prepared at 20 V had the optimal photoelectric chemical properties and photocathodic protection properties. Under simulated sunlight, the maximum photocurrent density can reach 306.7 mu A center dot cm(-2), and the lowest open circuit potential can reach -0.987 V (vs Ag/AgCl).

引用

页数：5

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