Au LSPR Effect Enhanced R‐CeO 2 /G‐C 3 N 4 S‐scheme Heterojunction for Accelerating CO 2 Photoreduction Performance
Source abstract
Abstract
ABSTRACT Excellent CO 2 adsorption ability and fast photogenerated carriers’ supply are vital conditions for efficient CO 2 photoreduction. In this paper, Au localized surface plasmon resonance (LSPR) has been successfully applied in a R‐CeO 2 /g‐C 3 N 4 S‐scheme heterojunction photocatalyst for CO 2 photoreduction. R‐CeO 2 /Au/g‐C 3 N 4 (CAC‐2) exhibited excellent CO 2 photoreduction performance and great stability. The CO yield over CAC‐2 is about 50.58 µmol·g −1 ·h −1 under UV–vis light irradiation, which is about 6.7 and 6.0 times higher than that of R‐CeO 2 and g‐C 3 N 4 , respectively. FDTD simulation, DFT calculation and photoelectrochemical tests together prove the introduction of Au NPs not only enhances the photogenerated carriers’ separation efficiency, but also decreases the formation energy barrier of the important intermediate *COOH, which is beneficial for the CO 2 photoreduction to CO. N 2 /CO 2 adsorption‐desorption curves indicated that the CAC‐2 ternary composite had the largest specific surface area and the best CO 2 adsorption capacity. Meanwhile, DFT calculation confirmed that the reduction sites of the CAC‐2 had the highest electron density, which can synergistically enhance the CO 2 photoreduction activity. The improvement of photocatalytic performance can be attributed to the synergistic enhancement of Au LSPR effect and S‐scheme heterojunction at the interface. Based on the in situ FTIR, in situ ESR, and 13 C isotope tracer experiment, a potential LSPR effect‐enhanced S‐scheme heterojunction catalytic mechanism has been provided, which may represent a significant advancement in the field.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · CO2 Reduction Techniques and Catalysts
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Functional Materials Physics and Chemistry (Ministry of Education) Jilin Normal University Changchun P. R. China
National Demonstration Center For Experimental Physics Education Jilin Normal University Siping P. R. China
International Innovation Center For Forest Chemicals and Materials College of Science Nanjing Forestry University Nanjing P. R. China
National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology School of Environmental Science and Engineering Suzhou University of Science and Technology Suzhou P. R. China
Division of Materials Science Department of Engineering Sciences and Mathematics Luleå University of Technology Luleå Sweden
Department of Molecular Sciences and Nanosystems Ca’ Foscari University of Venice Venezia Italy
Funding
National Natural Science Foundation of China
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