Surface Plasmonic Resonance and Z-Scheme Charge Transport Synergy in Three-Dimensional Flower-like Ag–CeO2–ZnO Heterostructures for Highly Improved Photocatalytic CO2 Reduction
Source abstract
Abstract
The design and engineering of plasmonic metal nanocomposite photocatalysts offer an operative approach for highly efficient CO2 photoreduction. Herein, the authors report a plasmonic 3D flower-like (3DF) Ag–CeO2–ZnO nanocomposite catalyst with effective charge carrier separation/transfer and CO2 adsorption capacity exhibiting a considerable enhanced performance compared to pure ZnO and CeO2 for photocatalytic CO2 reduction to CO and CH4 under UV–vis light. The apparent quantum efficiency of the optimized sample is 4.47% at 420 nm, and the CO2 to CO selectivity reaches up to ∼95%. The enhanced photocatalytic performance of 3DF Ag–CeO2–ZnO can be assigned to the prolonged absorption in the visible light region induced by the surface plasmon resonance (SPR) effect, the efficient separation of photogenerated charges, and the Z-scheme configuration. Furthermore, the photocatalyst displays excellent stability and reusability. The mechanism of the plasmon-mediated Z-scheme structure has been suggested in which Ag NPs act as both visible light absorber and electron mediator.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
Chemistry Department, Faculty of Science, Ibb University, Ibb 70270, Yemen
Physics Department, Faculty of Science, Ibb University, Ibb 70270, Yemen
Center for Materials Science and Technology, University of Mysore, Vijana Bhavana, Manasagangothiri, Mysuru 570006, India
State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
DOS in Earth Science, University of Mysore, Mysore 570006, India
Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Center for Advanced Materials, Qatar University, P.O box 2713, Doha, Qatar
Adichunchanagiri University, N.H.75, B. G. Nagara, Mandya District 571448, India
Funding
University Grants Commission
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