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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.)

ssessing the oxygen reduction reaction by a 2-electron mechanism on ceria surface

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Author(s):
Lucchetti, Lanna E. B. [1] ; de Almeida, James M. [2] ; Autreto, Pedro A. S. [2] ; Santos, Mauro C. [1]
Total Authors: 4
Affiliation:
[1] Univ Fed ABC UFABC, Lab Eletroquim & Mat Nanoestruturados LEMN, Ctr Ciencias Nat & Humanas CCNH, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas CCNH, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Chemistry Chemical Physics; v. 23, n. 34 AUG 2021.
Web of Science Citations: 2
Abstract

The 2-electron pathway of the oxygen reduction reaction is an unwanted process in the development of fuel cells. In contrast, it has gained the scientific community's attention due to its importance as a promising way of removing emergent pollutants and endocrine disruptors from water bodies and a more sustainable alternative for large-scale commercial hydrogen peroxide production. Cerium oxide has shown remarkable potential and selectivity experimentally for this mechanism, and its possible applications, exceeding the previous reference materials. In this work, we studied the 2-electron pathway for oxygen reduction on different ceria-cleaving directions (100), (110), (221), and (331) by first principles methods based on density functional theory. Our results show that the (100) surface is the most favorable for reduction, with the (331) crystallographic plane also showing potential for good catalytic activity. This fact could be essential for designing new nanostructures, with higher portions of those planes exposed, for higher catalytic activity. (AU)

FAPESP's process: 19/01925-4 - Application of gas diffusion electrodes modified with advanced materials in hydrogen peroxide electrosynthesis applied for the degradation of organic pollutants
Grantee:Lanna Emilli Barbosa Lucchetti
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support Opportunities: Research Projects - Thematic Grants