柔性可编织Ti丝/TiO<sub>2</sub>纳米多孔膜光阳极的制备及其光电催化性能研究

李梦琦; 李小龙; 顾晓栋; 沈忱思; 张丽莎

柔性可编织Ti丝/TiO₂纳米多孔膜光阳极的制备及其光电催化性能研究

1. 东华大学环境科学与工程学院, 上海 201620;
2. 福州大学能源与环境光催化国家重点实验室, 福建福州 350108

基金项目:

上海市自然科学基金（21ZR1402500）；国家重点研发计划项目（2022YFB3804905，2022YFB3804900）；福州大学能源与环境光催化国家重点实验室开放课题（SKLPEE-KF202101）

详细信息

作者简介:
李梦琦,女,2000年生,硕士,研究方向为柔性光热和光催化材料的制备及其性能研究。E-mail:lmq2946321882@163.com

中图分类号: TB333
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出版历程
- 收稿日期: 2022-12-06
- 网络出版日期: 2024-01-09
- 刊出日期: 2023-12-14

Study on Preparation of Flexible Weaveable Ti Wire/TiO₂ Nanoporous Film Photoanodes and Their Photocatalytic Performance

1. College of Environmental Sciences and Engineering, Donghua University, Shanghai 201620, China;
2. State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350108, China

摘要

摘要: 半导体光电催化是一种可高效降解各类污染物的技术，其关键在于开发高效、易回收且性能稳定的光阳极。利用阳极氧化法在柔性Ti丝表面原位生长TiO₂纳米多孔薄膜，最终制得的薄膜孔径约为85 nm，厚度约为10 μm。Ti丝/TiO₂纳米多孔膜复合物具有良好的柔性，将其编织成质量为0.25 g、面积约为36 cm²的织物光阳极，并进行光电催化实验。结果表明：光照下，随着偏压从0 V增加到0.6 V，光电流从0 mA上升至0.32 mA。在0.6 V外加电压以及可见光光照120 min后，溶液中的罗丹明B降解效率高达87.8%，明显高于光催化时的60.0%和电催化时的3.6%。循环使用4次后，光阳极仍对罗丹明B保持着85.0%的降解效率，展现了良好的稳定性。因此，Ti丝/TiO₂纳米多孔膜光阳极在光电催化降解污染物上具有较好的应用前景。
- TiO₂纳米多孔膜 /
- 阳极氧化法 /
- 可编织基底 /
- 光电催化
Abstract: Various pollutants can be efficiently degraded by semiconductor photoelectrocatalysis technology and the key of this technology is to develop efficient, easily recyclable and stable photoelectrodes. In this study, TiO₂ nanoporous films grow in situ on the surface of the flexible titanium wire by using anodic oxidation technology, and the as-prepared films possess pore size diameters of 85 nm and thickness of 10 μm. The Ti wire/TiO₂ nanofilm composite has excellent flexibility, and is woven into fabric photoanodes with the weight of 0.25 g and area of 36 cm². The photocatalytic experiment is carried out on the fabric photoanodes. The results show that the photocurrent rises from 0 mA to 0.32 mA when the bias voltage increases from 0 V to 0.6 V under the illumination condition. It is worth noting that the fabric photoanodes can degrade 87.8% Rhodamine B (RhB) in the photo electrocatalytic process for 120 min under the bias voltage of 0.6 V, which significantly exceeds 60.0% and 3.6% of those of the photocatalysis and electrocatalysis. Furthermore, the degradation efficiency of RhB remains 85.0% after four cycles, showing good performance stability of Ti wire/TiO₂ nanoporous film photoanodes. Therefore, Ti wire/TiO₂ nanoporous film photoanode shows excellent prospects for photoelectroca-talytic degradation of contaminants.
- TiO₂ nanoporous films /
- anodic oxidation method /
- weaveable wire /
- photoelectrocatalysis

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参考文献(19)

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