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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.)

Small (< 5 nm), Clean, and Well-Structured Cubic Platinum Nanoparticles: Synthesis and Electrochemical Characterization

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Author(s):
Antoniassi, Rodolfo M. [1, 2] ; Erikson, Heiki [3, 2] ; Solla-Gullon, Jose [2] ; Torresi, Roberto M. [1] ; Feliu, Juan M. [2]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, Ave Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Alicante, Inst Electroquim, Ap 99, Alicante 03080 - Spain
[3] Univ Tartu, Inst Chem, Ravila 14a, EE-50411 Tartu - Estonia
Total Affiliations: 3
Document type: Journal article
Source: CHEMELECTROCHEM; v. 8, n. 1 NOV 2020.
Web of Science Citations: 0
Abstract

Shape-controlled metal nanoparticles are significantly improving the electrocatalysis of many relevant reactions. By controlling the shape of nanoparticles, it is possible to engineer their surface to exhibit a preferential structure. However, to facilitate the incorporation of shaped nanomaterials into practical electrochemical devices, it is indispensable to overcome limitations caused by their large particle size (typically >5 nm). For practical applications, nanoparticles must have a size lower than 5 nm with a clean surface to decrease costs and provide a sufficiently large specific surface area. This is a major challenge that has remained unexplored up to now. Herein, we present the synthesis and electrochemical characterization of 3-5 nm, with well-defined cubic Pt nanoparticles supported on carbon. The electrochemical characterization of the nanoparticles evidences the existence of a preferential [100] and clean structure (within about 40 % of [100] terrace surface). (AU)

FAPESP's process: 17/15469-5 - Preparation of nanocatalysts with controlled morphology for applications in hydrogen purification and oxidation of contaminated hydrogen for electric energy generation
Grantee:Rodolfo Molina Antoniassi
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/08051-0 - Reshaping of platinum nanoparticles from Pt/C by halide ions into electrochemical applications
Grantee:Rodolfo Molina Antoniassi
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
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