应用化学 ›› 2022, Vol. 39 ›› Issue (7): 1147-1156.DOI: 10.19894/j.issn.1000-0518.210349

• 研究论文 • 上一篇    下一篇

纳米Ag/TiO2纳米管阵列基底构建及表面增强拉曼散射光谱检测与降解盐酸四环素

张晓丽2, 彭玉美1, 王庆伟1, 秦利霞1(), 刘肖霞1, 康诗钊1, 李向清1()   

  1. 1.上海应用技术大学化学与环境工程学院,上海 201418
    2.商丘师范学院化学化工学院,商丘 476000
  • 收稿日期:2021-07-19 接受日期:2021-11-23 出版日期:2022-07-01 发布日期:2022-07-11
  • 通讯作者: 秦利霞,李向清
  • 基金资助:
    国家自然科学基金(21771125);上海市科委地方能力建设项目(19090503700)

Construction of Nano Ag Modified TiO2 Nanotube Array Substrate for Surface Enhanced Raman Scattering Detection and Degradation of Tetracycline Hydrochloride

Xiao-Li ZHANG2, Yu-Mei PENG1, Qing-Wei WANG1, Li-Xia QIN1(), Xiao-Xia LIU1, Shi-Zhao KANG1, Xiang-Qing LI1()   

  1. 1.School of Chemical and Environmental Engineering,Shanghai Institude of Technology,Shanghai 201418,China
    2.School of Chemistry and Chemical Engineering,Shangqiu Normal College,Shangqiu 476000,China
  • Received:2021-07-19 Accepted:2021-11-23 Published:2022-07-01 Online:2022-07-11
  • Contact: Li-Xia QIN,Xiang-Qing LI
  • About author:lxqin@sit.edu.cn
    xqli@sit.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21771125);the Scientific Research Project of Shanghai Municipal Science and Technology Commission(19090503700)

摘要:

将阳极氧化与光还原法结合,在TiO2纳米管阵列(TiO2NTAs)表面修饰Ag纳米粒子,获得一种均匀有序、稳定性高且可循环的TiO2NTAs/Ag活性基底。采用X射线粉末衍射(XRD)、X射线光电子能谱(XPS)、紫外可见漫反射光谱(UV-Vis DRS)、表面增强拉曼散射光谱(SERS)和扫描电子显微镜(SEM)等手段对TiO2NTAs/Ag的组成和结构进行了表征。进一步研究了该TiO2-NTAs/Ag阵列对盐酸四环素(TC-HCl)的SERS响应,结果表明,该复合基底对TC-HCl具有较高的检测灵敏度,在水中检测限可达1×10-14 mol/L,而TiO2-NTAs与Ag之间的协同效应对其检测性能的提高起着关键作用。此外,TiO2NTAs/Ag基底在光照下对TC-HCl展示了优异的降解活性,且至少可循环使用8次。表明该TiO2NTAs/Ag基底在环境中有机污染物的SERS检测和降解领域具有潜在的应用前景。

关键词: TiO2纳米管, 可循环基底, 表面增强拉曼散射光谱检测, 光催化降解, 盐酸四环素

Abstract:

By combining anodic oxidation with photo-reduction method, a uniform, stable and recyclable surface enhanced Raman scattering (SERS)-active substrate composed of well-ordered Ag nanoparticles decorated on TiO2 nanotube arrays (TiO2NTAs/Ag) is obtained. The composition and structure of the TiO2NTAs/Ag are characterized using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflection spectrum (UV-Vis DRS), surface enhanced Raman scattering spectroscopy (SERS) and scanning electron microscope (SEM) measurements. The SERS response of the TiO2NTAS/Ag array to tetracycline hydrochloride (TC-HCl) is further studied, which exhibits superior sensitivity for SERS detection of TC-HCl, and the detection limit could reach 1 × 10-14 mol/L in water. In addition, the TiO2NTAs/Ag substrate exhibits excellent degradation activity for TC-HCl under light and could be recycled for at least 8 times. It shows a potential application in SERS detection and degradation of organic contaminants in environment.

Key words: TiO2 nanotube arrays, Recyclable substrate, Surface enhanced Raman scattering detection, Photo-degradation, Tetracycline hydrochloride

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