影像科学与光化学 ›› 2018, Vol. 36 ›› Issue (4): 331-339.DOI: 10.7517/j.issn.1674-0475.180107

• 论文 • 上一篇    下一篇

MoS2/TiO2纳米管阵列的一步沉积法制备及光电性能研究

李玥, 李红英, 常玉雪, 周宏艳, 于翔   

  1. 河南工程学院 材料与化学工程学院, 河南 郑州 450007
  • 收稿日期:2018-01-19 修回日期:2018-02-05 出版日期:2018-07-15 发布日期:2018-07-15
  • 通讯作者: 李玥
  • 基金资助:
    国家自然科学基金青年基金(51608175)、河南省教育厅科学技术研究重点项目(17B610004,15A150043)和河南工程学院博士基金(D2015020)资助

One-step Synthesis of Composited MoS2/TiO2 Nanotube Arrays and Its Photoelectrochemical Properties

LI Yue, LI Hongying, CHANG Yuxue, ZHOU Hongyan, YU Xiang   

  1. Department of Material and Chemistry Engineering, Henan University of Engineering, Zhengzhou 450007, Henan, P. R. China
  • Received:2018-01-19 Revised:2018-02-05 Online:2018-07-15 Published:2018-07-15

摘要: 本文采用阳极氧化法及循环伏安法,在TiO2纳米管阵列上成功沉积了MoS2纳米粒子,得到了MoS2/TiO2复合纳米材料。与未修饰的TiO2纳米管阵列相比,复合MoS2/TiO2纳米管阵列的光电性能以及光催化性能都有明显提升。通过光电流实验结果分析,当沉积MoS2圈数为30圈时,MoS2/TiO2复合纳米材料的光电流强度最强(0.35 mA/cm2),是未修饰的TiO2光电流强度的3.88倍(0.09 mA/cm2)。通过光催化降解对比实验发现,MoS2/TiO2复合纳米材料对4-硝基酚的光催化降解效果要明显优于未修饰的TiO2。复合MoS2/TiO2纳米管阵列增强的光电性能及光催化活性应该是归因于复合材料增强的可见光吸收能力,以及更快的电子和空穴迁移速度。

关键词: TiO2, MoS2, 异质结, 光电性能, 光催化

Abstract: In this paper, MoS2 nanoparticles were successfully deposited on TiO2 nanotube arrays by anodic oxidation method and cyclic voltammetry method, obtaining MoS2/TiO2 composited nanotubes. Compared with the unmodified TiO2 nanotube arrays, the photoelectrochemical properties and photocatalytic propeties of the composited MoS2/TiO2 nanotube arrays have been significantly improved. The results of photocurrent experiments showed that the photocurrent density of MoS2/TiO2 composited nanotubes is the highest (0.35 mA/cm2) when the deposition number of MoS2 cycles is 30 cycles, which is 3.88 times as much as the unmodified TiO2 (0.09 mA/cm2). The MoS2/TiO2 composited nanotubes exhibited improved photocatalytic degradation efficiency than that of unmodified TiO2 by comparison tests of photocatalytic degradation of 4-nitrophenol. The enhanced photoelectrochemical and photocatalytic activity is attributed to the enhanced visible absorption capacity, as well as the faster migration rate of electrons and holes on the MoS2/TiO2 composited nanotubes.

Key words: TiO2, MoS2, heterojunction, photoelectrochemical property, photocatalysis