复合电解液中TiO<sub>2</sub>纳米管阵列的制备及光生阴极保护性能

doi:10.11902/1005.4537.2021.255

中国腐蚀与防护学报

2022, Vol. 42

Issue (5): 759-764 DOI: 10.11902/1005.4537.2021.255

研究报告

本期目录 | 过刊浏览

复合电解液中TiO₂纳米管阵列的制备及光生阴极保护性能

鲍晨宇, 李建民, 叶梦颖, 高荣杰(

)

中国海洋大学材料科学与工程学院青岛 266100

Preparation of TiO₂ Nanotube Arrays in Composite Electrolytes and Their Photogenerated Cathodic Protection Performance

BAO Chenyu, LI Jianmin, YE Mengying, GAO Rongjie(

)

School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

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摘要:

采用二次阳极氧化法在3种不同的含氟电解质 (F^-、BF₄^-、F^--BF₄^-) 中制备了TiO₂纳米管阵列。通过SEM、XRD、UV-vis DRS、PL等手段对所制备的TiO₂纳米管阵列形貌、结构、光响应能力以及光生载流子分离效率进行对比研究,同时在开闭可见光条件下进行光电化学性能测试。结果显示,用含NH₄F、NH₄BF₄和H₂O的乙二醇复合电解液制备的TiO₂纳米管阵列相比于传统单种含氟电解液,具有更规整的结构,光吸收更强,光生载流子分离效率更高,对304不锈钢具有更好的光生阴极保护作用。

关键词 ：二次阳极氧化, TiO₂纳米管, 复合电解液, 光生阴极保护

Abstract：

At present, TiO₂ nanotubes are mainly prepared in single fluorinated electrolyte by secondary anodization. Herewith TiO₂ nanotube arrays were prepared in three electrolytes of different fluoride ions (F^-, BF₄^-, F^--BF₄^-) by secondary anodization, aiming to figure out how the preparation processes affect the photogenerated cathodic performance of the prepared TiO₂ nanotubes as photoanodes. The morphology, structure, light response ability and photogenerated carrier separation efficiency of the three nanotubes were comparatively examined by means of SEM, XRD, UV-vis DRS and PL, while the photoelectrochemical properties of the three samples were tested in the condition of open and closed visible light. The results showed that TiO₂ nanotube arrays prepared in glycol composite electrolyte containing NH₄F, NH₄BF₄ and H₂O presented much regular structure, stronger light absorption, higher photogenerated carrier separation efficiency and better photogenerated cathodic protection for 304 stainless steels rather than those prepared in traditional electrolyte of single fluoride salt.

Key words： secondary anodization TiO₂ nanotube composite electrolyte photocathode protection

收稿日期: 2021-09-22

ZTFLH:

TG172

基金资助:国家自然科学基金山东联合基金(U1706221)

通讯作者: 高荣杰 E-mail: dmh206@ouc.edu.cn

Corresponding author: GAO Rongjie E-mail: dmh206@ouc.edu.cn

作者简介: 鲍晨宇,女,1996年生,硕士生

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引用本文:

鲍晨宇, 李建民, 叶梦颖, 高荣杰. 复合电解液中TiO₂纳米管阵列的制备及光生阴极保护性能[J]. 中国腐蚀与防护学报, 2022, 42(5): 759-764.
Chenyu BAO, Jianmin LI, Mengying YE, Rongjie GAO. Preparation of TiO₂ Nanotube Arrays in Composite Electrolytes and Their Photogenerated Cathodic Protection Performance. Journal of Chinese Society for Corrosion and protection, 2022, 42(5): 759-764.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2021.255 或 https://www.jcscp.org/CN/Y2022/V42/I5/759

图1 3种TiO2纳米管阵列的表面及截面形貌

图2 FTNT、BFTNT、F-BFTNT的XRD图谱

图3 FTNT、BFTNT、F-BFTNT紫外-可见光漫反射光谱

图4 FTNT、BFTNT、F-BFTNT光致发光光谱

图5 间歇光下FTNT、BFTNT、F-BFTNT光电流密度-时间曲线

图6 间歇可见光条件下,3种光阳极耦联304不锈钢的开路电位

图7 模拟太阳光下3种电化学阻抗谱的Nyquist图和等效电路图

表1 模拟太阳光下3种电化学阻抗谱拟合参数

图8 光生阴极保护原理示意图[34]

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