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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reaction Pathway Dependence in Plasmonic Catalysis: Hydrogenation as a Model Molecular Transformation

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Author(s):
Barbosa, Eduardo C. M. [1] ; Fiorio, Jhonatan L. [1] ; Mou, Tong [2, 3] ; Wang, Bin [2, 3] ; Rossi, Liane M. [1] ; Camargo, Pedro H. C. [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Oklahoma, Ctr Interfacial React Engn, Norman, OK 73019 - USA
[3] Univ Oklahoma, Sch Chem Biol & Mat Engn, Gallogly Coll Engn, Norman, OK 73019 - USA
Total Affiliations: 3
Document type: Journal article
Source: CHEMISTRY-A EUROPEAN JOURNAL; v. 24, n. 47, SI, p. 12330-12339, AUG 22 2018.
Web of Science Citations: 7
Abstract

The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles can enhance or mediate chemical transformations. Increased reaction rates for several reactions have been reported due to this phenomenon; however, the fundamental understanding of mechanisms and factors that affect activities remains limited. Here, by investigating hydrogenation reactions as a model transformation and employing different reducing agents, H-2 and NaBH4, which led to different hydrogenation reaction pathways, we observed that plasmonic excitation of Au nanoparticle catalysts can lead to negative effects over the activities. The underlying physical reason was explored using density functional theory calculations. We observed that positive versus negative effects on the plasmonic catalytic activity is reaction-pathway dependent. These results shed important insights on our current understanding of plasmonic catalysis, demonstrating reaction pathways must be taken into account for the design of plasmonic nanocatalysts. (AU)

FAPESP's process: 15/21366-9 - Hybrid materials containing metal nanoparticles for catalytic applications
Grantee:Pedro Henrique Cury Camargo
Support type: Regular Research Grants
FAPESP's process: 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage
Grantee:Roberto Manuel Torresi
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/11452-5 - Hybrid materials composed of oxides and metallic nanoparticles for catalytic and photocatalytic applications
Grantee:Eduardo César Melo Barbosa
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 16/16738-7 - Study of the influence of organic ligands on the reactivity of gold nanoparticles
Grantee:Liane Marcia Rossi
Support type: Regular Research Grants