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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.)

Tuning of catalytic properties for electrooxidation of small organic molecules on Pt-based thin films via controlled thermal treatment

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Tripkovic, D. V. [1] ; Popovic, K. Dj. [1] ; Jovanovic, V. M. [1] ; Nogueira, J. A. [2] ; Varela, H. [2] ; Lopes, P. P. [3] ; Strmcnik, D. [3] ; Stamenkovic, V. R. [3] ; Markovic, N. M. [3]
Total Authors: 9
[1] Univ Belgrade, Dept Electrochem, ICTM, Belgrade 11000 - Serbia
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Ave Trabalhador SanCarlense 400, BR-13566590 Sao Carlos, SP - Brazil
[3] Argonne Natl Lab, Dept Mat Sci, 9700 S Cass Ave, Lemont, IL 60439 - USA
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF CATALYSIS; v. 371, p. 96-105, MAR 2019.
Web of Science Citations: 0

Ability to utilize structure-function relationship in the design of electrocatalysts relies on fundamental understanding of physicochemical processes at the topmost surface. It has been demonstrated that reaction rate for majority of electrochemical reactions exhibit notable dependence on geometric arrangement of surface atoms due to varying levels of binding strength between different atomic structures and adsorbate molecules. Control of surface structure at nanoscale is being investigated here through a thin film approach. The surface characteristics of electrochemically deposited Pt thin films were probed for electrooxidation of small organic molecules such as formic acid and methanol. The low-index Pt single crystal electrodes were used for reactivity benchmarking which later guided thermal annealing processes, and ultimately, fine tuning of the ratio between (1 1 1) and (1 0 0) surface facets on Pt thin films. The tailored thin film structure is responsible for significant activation of both formic acid and methanol oxidation reactions, which justifies the approach. (C) 2019 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 15/09295-9 - Dynamic behavior in low-temperature fuel cells based on oxidation of small organic molecules
Grantee:Jéssica Alves Nogueira
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion
Grantee:Edson Antonio Ticianelli
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/17644-9 - Stability of electrocatalysts towards the electro-oxidation of organic molecules
Grantee:Jéssica Alves Nogueira
Support type: Scholarships abroad - Research Internship - Doctorate