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Steering interfacial charge kinetics: Synergizing cocatalyst roles of Ti3C2Mx (MXene) and NCDs for superior photocatalytic performance over TiO2
Peng, Chao1; Zhou, Tao1; Wei, Ping1; Yan, Xiqiang2; Kong, Youchao3; Xu, Wenkang4; Wang, Hongjuan4; Yu, Hao4; Jia, Jianbo1; Zhang, Kun1; Zhou, Bingpu3; Pan, Hui3
2022-10-15
Source PublicationApplied Surface Science
ISSN0169-4332
Volume599
Abstract

Steering the kinetics of photoexcited electron-hole pairs to achieve the elongated lifetime of carrier is one of key strategies to enhance the photocatalytic performance. Here, 0D/2D/2D NCDs/TiO/TiCM photocatalyst is fabricated for the first time via hydrothermal route, the mixed group terminated MXene (TiCM, M = -O, –OH, -F) and N-doped carbon dots (NCDs) are exploited as an electron acceptor and hole mediator, respectively, enhancing the photocatalytic activity of TiO nanosheets by steering interfacial charge kinetics. The photocatalytic hydrogen evolution and tetracycline hydrochloride (TC) degradation of 0.1 NCDs/TiO/TiCM-12 h are ∼ 4 and 9 times higher than those of TiO, respectively. UPS and DFT calculation results determine that the work function (Φ) of TiCM as 4.16 eV and 3.63 eV, respectively, which are larger than that of bare TiC (Φ = 3.55 eV), while the work function of TiO and NCDs are 3.98 and 3.09 eV, respectively. The results of charge transfer dynamics reveal that the photocatalytic enhancement of NCDs/TiO/TiCM is dominantly attributed to the synergizing cocatalyst roles of TiCM (MXene) and NCDs. The insight into the surface termination dominated electronic property of MXene and synergistic steering the interfacial charge kinetics is an effective way to fabricate high performance MXene-based photocatalysts.

KeywordNcds Photocatalysis Steering Charge Kinetics Synergizing Cocatalyst Ti3c2mx Mxene
DOI10.1016/j.apsusc.2022.154001
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000817824900004
Scopus ID2-s2.0-85132771741
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorPeng, Chao; Yan, Xiqiang; Pan, Hui
Affiliation1.School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
2.School of Materials Science and Energy Engineering, Guangdong Key Lab for Hydrogen Energy Technologies, Foshan University, Foshan, 528000, China
3.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, China
4.School of Chemistry and Chemical Engineering, Key Laboratory of Fuel Cell Technology of Guangdong Province, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou, 510640, China
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Peng, Chao,Zhou, Tao,Wei, Ping,et al. Steering interfacial charge kinetics: Synergizing cocatalyst roles of Ti3C2Mx (MXene) and NCDs for superior photocatalytic performance over TiO2[J]. Applied Surface Science,2022,599.
APA Peng, Chao,Zhou, Tao,Wei, Ping,Yan, Xiqiang,Kong, Youchao,Xu, Wenkang,Wang, Hongjuan,Yu, Hao,Jia, Jianbo,Zhang, Kun,Zhou, Bingpu,&Pan, Hui.(2022).Steering interfacial charge kinetics: Synergizing cocatalyst roles of Ti3C2Mx (MXene) and NCDs for superior photocatalytic performance over TiO2.Applied Surface Science,599.
MLA Peng, Chao,et al."Steering interfacial charge kinetics: Synergizing cocatalyst roles of Ti3C2Mx (MXene) and NCDs for superior photocatalytic performance over TiO2".Applied Surface Science 599(2022).
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