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Multichannel Charge Transfer and Mechanistic Insight in Metal Decorated 2D–2D Bi 2 WO 6 –TiO 2 Cascade with Enhanced Photocatalytic Performance
Author(s) -
Yuan Lan,
Weng Bo,
Colmenares Juan Carlos,
Sun Yugang,
Xu YiJun
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201702253
Subject(s) - photocatalysis , materials science , ternary operation , charge carrier , nanotechnology , semiconductor , nanoparticle , plasmon , surface plasmon resonance , energy conversion efficiency , cascade , charge (physics) , optoelectronics , chemical engineering , catalysis , chemistry , biochemistry , physics , quantum mechanics , computer science , engineering , programming language
Promising semiconductor‐based photocatalysis toward achieving efficient solar‐to‐chemical energy conversion is an ideal strategy in response to the growing worldwide energy crisis, which however is often practically limited by the insufficient photoinduced charge‐carrier separation. Here, a rational cascade engineering of Au nanoparticles (NPs) decorated 2D/2D Bi 2 WO 6 –TiO 2 (B–T) binanosheets to foster the photocatalytic efficiency through the manipulated flow of multichannel‐enhanced charge‐carrier separation and transfer is reported. Mechanistic characterizations and control experiments, in combination with comparative studies over plasmonic Au/Ag NPs and nonplasmonic Pt NPs decorated 2D/2D B–T composites, together demonstrate the cooperative synergy effect of multiple charge‐carrier transfer channels in such binanosheets‐based ternary composites, including Z‐scheme charge transfer, “electron sink,” and surface plasmon resonance effect, which integratively leads to the boosted photocatalytic performance.