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

Study on Preparation of Flexible Weaveable Ti Wire/TiO_(2) Nanoporous Film Photoanodes and Their Photocatalytic Performance

作　　者：李梦琦 李小龙 顾晓栋 沈忱思[1] 张丽莎[1,2] LI Mengqi;LI Xiaolong;GU Xiaodong;SHEN Chensi;ZHANG Lisha(College of Environmental Sciences and Engineering,Donghua University,Shanghai 201620,China;State Key Laboratory of Photocatalysis on Energy and Environment,Fuzhou University,Fuzhou 350108,China)

机构地区：[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

出　　处：《材料开发与应用》2023年第6期67-73,共7页Development and Application of Materials

基　　金：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)。

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TiO_(2)纳米多孔薄膜,最终制得的薄膜孔径约为85 nm,厚度约为10μm。Ti丝/TiO_(2)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 cm^(2)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/TiO_(2)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。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,TiO_(2) 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/TiO_(2) nanofilm composite has excellent flexibility,and is woven into fabric photoanodes with the weight of 0.25 g and area of 36 cm^(2).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/Ti O2nanoporous film photoanodes.Therefore,Ti wire/Ti O2nanoporous film photoanode shows excellent prospects for photoelectroca-talytic degradation of contaminants.

关 键 词：TiO_(2)纳米多孔膜 阳极氧化法 可编织基底 光电催化 

分 类 号：TB333[一般工业技术—材料科学与工程]