| Full text | |
| Author(s): |
Barbosa, Eduardo C. M.
;
Fiorio, Jhonatan L.
;
Mou, Tong
;
Wang, Bin
;
Rossi, Liane M.
;
Camargo, Pedro H. C.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | CHEMISTRY-A EUROPEAN JOURNAL; v. 24, n. 47, p. 10-pg., 2018-08-22. |
| 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: | 16/16738-7 - Study of the influence of organic ligands on the reactivity of gold nanoparticles |
| Grantee: | Liane Marcia Rossi |
| Support Opportunities: | 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 Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/21366-9 - HYBRID MATERIALS CONTAINING METAL NANOPARTICLES FOR CATALYTIC APPLICATIONS |
| Grantee: | Pedro Henrique Cury Camargo |
| Support Opportunities: | Regular Research 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 Opportunities: | Scholarships in Brazil - Doctorate (Direct) |