Citation: YAN Kang, GUAN Yun-Feng, CONG Ye, XU Tian-Xiang, ZHU Hui, LI Xuan-Ke. Preparation of Two Dimensional TiO₂/Ti₃C₂ Photocatalyst by Solvothermal Oxidation of Few-Layered Ti₃C₂ Mxene[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(7): 1203-1211. doi: 10.11862/CJIC.2019.142 shu

Preparation of Two Dimensional TiO₂/Ti₃C₂ Photocatalyst by Solvothermal Oxidation of Few-Layered Ti₃C₂ Mxene

YAN Kang ^1,2 ,
GUAN Yun-Feng ¹ ,
CONG Ye ^1,2,, ,
XU Tian-Xiang ¹ ,
ZHU Hui ^1,2 ,
LI Xuan-Ke ^1,2,,

1.
Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China
2.
State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

Corresponding author: CONG Ye, congye626@126.com LI Xuan-Ke, xkli8524@sina.com
Received Date: 16 February 2019
Revised Date: 25 April 2019

Figures(12)

In order to solve the defects of TiO₂ photocatalyst, including the rapid recombination of photo-generated electronhole pairs and low solar light utilization, two dimensional TiO₂/DL-Ti₃C₂ composite photocatalysts were prepared using solvothermal method to control the oxidation of delaminated Ti₃C₂ MXene with few layers (DL-Ti₃C₂). The photocatalytic performance of TiO₂/DL-Ti₃C₂ composite was evaluated by degrading rhodamine B solution. The results show that TiO₂/DL-Ti₃C₂ photocatalyst exhibited strong absorption for visible light and better photocatalytic performance than pure DL-Ti₃C₂ and P25. The TiO₂/DL-Ti₃C₂ composite oxidized at 160℃ in solvothermal process obtained the best photocatalytic performance. When the oxidation temperature was too low, the amount of TiO₂ formed in the composite was insufficient to produce enough photo-generated electron-holes pairs, resulting in the unsatisfied performance of the photocatalyst. On the contrary, when the oxidation temperature was exceedingly high, the residual DL-Ti₃C₂ was unable to keep its outstanding conductivity, which accelerated the fast recombination of photo-generated electron-hole pairs and made the performance poor. Consequently, the relative contents of TiO₂ and DL-Ti₃C₂ in TiO₂/DL-Ti₃C₂ composites could be effectively regulated by varying the oxidation temperature of DL-Ti₃C₂, so as to improve the photocatalytic activity due to the synergistic effects of TiO₂ and DL-Ti₃C₂.
- TiO₂/DL-Ti₃C₂,
- solvothermal method,
- photocatalytic,
- composite material,
- synergistic effect
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Preparation of Two Dimensional TiO₂/Ti₃C₂ Photocatalyst by Solvothermal Oxidation of Few-Layered Ti₃C₂ Mxene