Cu and Si co-doping on TiO2 nanosheets to modulate reactive oxygen species for efficient photocatalytic methane conversion. Issue 1 (16th November 2022)

• Record Type: Journal Article
• Authors: Ma, Jun; Low, Jingxiang; Wu, Di; Gong, Wanbing; Liu, Hengjie; Liu, Dong; Long, Ran; Xiong, Yujie
• Is Part Of: Nanoscale horizons. Volume 8:Issue 1(2023)
• Page Start: 63
• Page End: 68
• Publication Date: 2022-11-16
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d2nh00457g
• Languages: English
• ISSNs: 2055-6756

Abstract

Abstract : The Cu and Si co-doping could rationally regulate the electronic structure of TiO2 nanosheets and maneuver the reactive oxygen species for methane activation, which achieves significant photocatalytic methane conversion into ethane. Abstract : In this study, we successfully construct Cu and Si co-doped ultrathin TiO2 nanosheets. As confirmed by comprehensive characterizations, Cu and Si co-doping can rationally tailor the electronic structure of TiO2 to maneuver reactive oxygen species for effective photocatalytic methane conversion. In addition, this co-doping greatly enhances the utilization efficiency of photogenerated charges. Furthermore, it is revealed that Cu and Si co-doping can significantly boost the adsorption and activation of methane on TiO2 nanosheets. As a result, the optimized catalyst achieves a C2 H6 production rate of 33.8 μmol g −1 h −1 with a selectivity of 88.4%. This work provides insights into nanocatalyst design toward efficient photocatalytic methane conversion into value-added compounds.