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Tailoring the catalytic properties of plasmonic Nanorattles towards the photochemical activation of oxygen under mild conditions

Grant number: 16/17866-9
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2017
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Susana Inés Córdoba de Torresi
Grantee:Jhon Jhon Quiroz Torres
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage, AP.TEM


The efficient use of solar energy has received wide interest due to the increase of energy and environmental concerns. A promising alternative in chemistry is sunlight-driven catalytic reactions. Recent scientific reports have shown that commercially important catalytic reactions, like oxidation, can be achieved with high efficiency and specificity employing plasmonic photocatalysts. The concept of plasmon-catalysis hybridization has triggered a special interest for designing novel nanomaterials combining plasmonic active metals (e.g., Au and Ag) with those that are active catalytic metals (e.g., Pd and Pt). This project seeks to enhance our understanding of the plasmon-catalysis hybridization phenomenon. To accomplish this, we propose to integrate the active phases in a nanometric way, specifically in the form of nanorattles, comprised of Au nanosphere inside a Ag/Pd or Ag/Pt shell. The galvanic replacement reaction will be adopted as a synthetic strategy; the resulting nanoparticles will be extensively characterized and used as catalysts for the photochemical oxidative coupling of anilines, leading to relevant structure performance relationship. Moreover, crucial information regarding the stability and regeneration of the active phases will be investigated. Finally, the influence of the support type adopted on the plasmon-catalysis hybridization properties provides an exciting opportunity to scale up these systems. The results of this research will provide useful design guidelines for further improvements. (AU)

Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TEIXEIRA, IVO F.; QUIROZ, JHON; HOMSI, MAURICIO S.; CAMARGO, PEDRO H. C. An Overview of the Photocatalytic H-2 Evolution by Semiconductor-Based Materials for Nonspecialists. Journal of the Brazilian Chemical Society, v. 31, n. 2, p. 211-229, FEB 2020. Web of Science Citations: 0.
IVO F. TEIXEIRA; JHON QUIROZ; MAURICIO S. HOMSI; PEDRO H. C. CAMARGO. An Overview of the Photocatalytic H2 Evolution by Semiconductor-Based Materials for Nonspecialists. Journal of the Brazilian Chemical Society, v. 31, n. 2, p. 211-229, Fev. 2020.
DE OLIVEIRA, PAULO F. M.; QUIROZ, JHON; DE OLIVEIRA, DANIELA C.; CAMARGO, PEDRO H. C. A mechano-colloidal approach for the controlled synthesis of metal nanoparticles. CHEMICAL COMMUNICATIONS, v. 55, n. 95, p. 14267-14270, DEC 11 2019. Web of Science Citations: 0.
ARAUJO, THAYLAN P.; QUIROZ, JHON; BARBOSA, EDUARDO C. M.; CAMARGO, PEDRO H. C. Understanding plasmonic catalysis with controlled nanomaterials based on catalytic and plasmonic metals. CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, v. 39, p. 110-122, FEB 2019. Web of Science Citations: 4.
QUIROZ, JHON; BARBOSA, EDUARDO C. M.; ARAUJO, THAYLAN P.; FIORIO, JHONATAN L.; WANG, YI-CHI; ZOU, YI-CHAO; MOU, TONG; ALVES, TIAGO V.; DE OLIVEIRA, DANIELA C.; WANG, BIN; HAIGH, SARAH J.; ROSSI, LIANE M.; CAMARGO, PEDRO H. C. Controlling Reaction Selectivity over Hybrid Plasmonic Nanocatalysts. Nano Letters, v. 18, n. 11, p. 7289-7297, NOV 2018. Web of Science Citations: 11.

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