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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.)

Bringing Earth-Abundant Plasmonic Catalysis to Light: Gram-Scale Mechanochemical Synthesis and Tuning of Activity by Dual Excitation of Antenna and Reactor Sites

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Author(s):
Quiroz, Jhon [1] ; de Oliveira, Paulo F. M. [2, 3] ; Shetty, Shwetha [1] ; Oropeza, Freddy E. [4] ; de la Pena O'Shea, Victor A. [4] ; Rodrigues, V, Lucas C. ; Rodrigues, Maria P. de S. [5] ; Torresi, Roberto Manuel [5] ; Emmerling, Franziska [3] ; Camargo, Pedro H. C. [1]
Total Authors: 10
Affiliation:
[1] Univ Helsinki, Dept Chem, Helsinki 00560 - Finland
[2] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05508000 Sao Paulo - Brazil
[3] BAM Fed Inst Mat Res & Testing, D-12489 Berlin - Germany
[4] IMDEA Energy Inst, Photoactivated Proc Unit, Madrid 28935 - Spain
[5] Rodrigues, Lucas C., V, Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05508000 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: ACS SUSTAINABLE CHEMISTRY & ENGINEERING; v. 9, n. 29, p. 9750-9760, JUL 26 2021.
Web of Science Citations: 0
Abstract

The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles (NPs) in the visible and near-infrared ranges is currently at the forefront of improving photocatalytic performances via plasmonic photocatalysis. One bottleneck of this field is that the NPs that often display the best optical properties in the visible and near-infrared ranges are based on expensive noble metals such as silver (Ag) and gold (Au). While earth-abundant plasmonic materials have been proposed together with catalytic metals in antenna-reactor systems, their performances remain limited by their optical properties. Importantly, the synthesis of plasmonic photocatalysts remains challenging in terms of scalability while often requiring several steps, high temperatures, and special conditions. Herein, we address these challenges by developing a one-pot, gram-scale, room-temperature synthesis of earth-abundant plasmonic photocatalysts while improving their activities beyond what has been dictated by the LSPR excitation of the plasmonic component. We describe the mechanochemical synthesis of earth-abundant plasmonic photocatalysts by using MoO3 (antenna) and Au (reactor) NPs as a proof-of-concept example and demonstrate that the dual plasmonic excitation of antenna and reactor sites enables the tuning of plasmonic photocatalytic performances toward the reductive coupling of nitrobenzene to azobenzene as a model reaction. In addition to providing a pathway to the facile and gramscale synthesis of plasmonic photocatalysts, the results reported herein may open pathways to improved activities in plasmonic catalysis. (AU)

FAPESP's process: 17/15456-0 - Solid-state mechanochemistry as a greener route for synthesis of advanced materials
Grantee:Paulo Filho Marques de Oliveira
Support Opportunities: Scholarships in Brazil - Post-Doctoral
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: 19/01619-0 - Elucidating the mechanisms of noble metal nanoparticles formation in solid-state mechanochemical ball milling conditions using in situ techniques
Grantee:Paulo Filho Marques de Oliveira
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor