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Plasmon-Enhanced Electrocatalytic Properties of Rationally Designed Hybrid Nanostructures at a Catalytic Interface

Title
Plasmon-Enhanced Electrocatalytic Properties of Rationally Designed Hybrid Nanostructures at a Catalytic Interface
Authors
Lee J.-E.Marques Mota F.Choi C.H.Lu Y.-R.Boppella R.Dong C.-L.Liu R.-S.Kim D.H.
Ewha Authors
김동하Filipe Marques Mota
SCOPUS Author ID
김동하scopus; Filipe Marques Motascopus
Issue Date
2019
Journal Title
Advanced Materials Interfaces
ISSN
2196-7350JCR Link
Citation
Advanced Materials Interfaces vol. 6, no. 2
Keywords
heterogeneous catalysishydrogen evolution reaction (HER)oxygen evolution reaction (OER)photo-electrocatalysisplasmonic nanoparticles
Publisher
Wiley-VCH Verlag
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
In recent years, a promising role of plasmonic metal nanoparticles (NPs) has been demonstrated toward an improvement of the catalytic efficiency of well-designed hybrid electrocatalysts. In particular, the coupling of plasmonic functionality with the metal-based core–shell architectures in plasmon-enhanced electrocatalysis provides a sustainable route to improve the catalytic performances of the catalysts. Herein, the rationally designed AuNPs wrapped with reduced graphene oxide (rGO) spacer along with PdNPs (AuNP@rGO@Pd) as the final composite are reported. The rGO is proposed to promote the reduction of PdO, greatly enhance the conductivity, and catalytic activity of these nanohybrid structures. The plasmon-enhanced electrocatalytic performance of optimized AuNP@rGO(1)@Pd exhibits an ≈1.9- and 1.1-fold enhanced activity for the hydrogen evolution reaction and oxygen evolution reaction, respectively. The final composite also exhibits a superior stability up to 10000 s compared with the commercial Pd/C. The mechanism of the enhanced catalytic performance is monitored through in situ X-ray absorption spectroscopy by observing the generated electron density under light irradiation. The results demonstrate that the energetic charge carriers are concentrated in the incorporated PdNPs, allowing higher catalytic performances for the overall water-splitting reaction. The conclusions herein drawn are expected to shed light on upcoming plasmon-induced electrocatalytic studies with analogous hybrid nanoarchitectures. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI
10.1002/admi.201801144
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자연과학대학 > 화학·나노과학전공 > Journal papers
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