| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1605957 | Journal of Alloys and Compounds | 2016 | 7 Pages |
Abstract
One-Dimensional (1D) MoS2-decorated TiO2 nanotubes were synthesized by the anodization of TiO2 nanotubes followed by a hydrothermal process for MoS2-decoration. The structure, morphology and surface characteristics of the MoS2-TiO2 composites were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and Brunauer-Emmett-Teller (BET). The results showed that TiO2 nanotubes can be filled and covered by flake-like MoS2 nanostructure. The numbers of the MoS2 layers ranged from 1 to 3. The TiO2 nanotube sensor shows a normal n-type response to reducing ethanol gas, whereas MoS2-TiO2 exhibits p-type response with excellent sensing performances. Specially, the sensitivity for the MoS2-TiO2 heterojunction increased almost 11 times than TiO2 nanotubes. This conversion of sensing behavior can be explained by the formation of p-n heterojunction structures.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
P.X. Zhao, Y. Tang, J. Mao, Y.X. Chen, H. Song, J.W. Wang, Y. Song, Y.Q. Liang, X.M. Zhang,