1. Study on the synthesis of heterostructure MoS2/TiO2 material for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid
- Author
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Cam Le Minh, Ha Nguyen Ngoc, Ha Nguyen Thi Thu, Mo Nguyen Thi, Lan Phung Thi, and Tuan Dao Thi
- Subjects
chemistry.chemical_compound ,2,4-Dichlorophenoxyacetic acid ,Chemistry ,Heterojunction ,Photocatalytic degradation ,Nuclear chemistry - Abstract
Nanoflower MoS2, nanowire TiO2(NNW) and 3D MoS2/TiO2 nano-heterostructure have been synthesized successfully by simple typical hydrothermal reaction method followed by 200oC calcination under an argon atmosphere. The prepared samples are characterized in detail by XRD, FESEM, UV-vis DRS, EDX and BET. The results suggest that the TiO2 NNWis successfully coupled with MoS2 to form the heterojunction nanostructure. The hybrid heterostructures can effectively utilize visible-light and solar energy to degrade 2,4-dichlorophenoxyacetic acid (2,4-D). The degradation rate of 2,4-D is as high as 99%. The improved photocatalytic activity owes to the decreased band-gap and the heterosurface properties of MoS2/TiO2, promoting the electron-hole pairs separation and absorption capacity to visible light. This work presents a facile approach for fabricating the MoS2/TiO2 heterostructures for efficient photocatalytic 2,4-D solution, which will facilitate the development of designing photo catalysts applied in environment and energy. more...
- Published
- 2021
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