Enhanced photocatalytic activity and mechanism of Ti3C2−OH/Bi2WO6:Yb3+, Tm3+ towards degradation of RhB under visible and near infrared light irradiation
Source abstract
Abstract
Abstract It is an effective method to explore full spectrum responsive photocatalyst for improving their photocatalytic activity. Herein, Ti3C2−OH/Bi2WO6:Yb3+, Tm3+ composites were successfully synthesized via a facile hydrothermal method. The resultant Ti3C2−OH/Bi2WO6:Yb3+, Tm3+ composites accompanied 2D/2D heterojunction with grid-like porous structure present a significant enhancement of photoactivity towards degradation of RhB under visible and NIR light irradiation. Specifically, the 0.2-Y/T-TB2.8 composite exhibits the best photocatalytic activity for RhB removal, in which the RhB degradation efficiency was 99.8% (Vis-NIR, 30 min), 91% (Vis, 30 min), and 48% (NIR, 160 min). The excellent photocatalytic activity of the composite is attributed to the grid-like porous structure endowing it with an enhanced RhB adsorption, favorable charge separation resulting from the outstanding conductivity of the Ti3C2−OH, and up-conversion mechanism via energy level transition of Yb3+/Tm3+. In addition, the radical capture experiments verified that the hole (h+) plays the important role for degradation of RhB.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: MXene and MAX Phase Materials · Advanced Photocatalysis Techniques · 2D Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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