skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Tuning of Catalytic Properties for Electrooxidation of Small Organic Molecules on Pt-Based Thin Films via Controlled Thermal Treatment.

Abstract

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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; Ministry of Education and Science of Republic of Serbia; Sao Paulo Research Foundation (FAPESP); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior
OSTI Identifier:
1531158
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 371
Country of Publication:
United States
Language:
English
Subject:
Pt thin films; electro-oxidation; formic acid; methanol; thermal treatment

Citation Formats

Tripkovic, D. V., Popovic, K. Dj., Jovanovic, V. M., Nogueira, J. A., Varela, H., Lopes, P. P., Strmcnik, D., Stamenkovic, V. R., and Markovic, N. M. Tuning of Catalytic Properties for Electrooxidation of Small Organic Molecules on Pt-Based Thin Films via Controlled Thermal Treatment.. United States: N. p., 2019. Web. doi:10.1016/j.jcat.2019.01.038.
Tripkovic, D. V., Popovic, K. Dj., Jovanovic, V. M., Nogueira, J. A., Varela, H., Lopes, P. P., Strmcnik, D., Stamenkovic, V. R., & Markovic, N. M. Tuning of Catalytic Properties for Electrooxidation of Small Organic Molecules on Pt-Based Thin Films via Controlled Thermal Treatment.. United States. doi:10.1016/j.jcat.2019.01.038.
Tripkovic, D. V., Popovic, K. Dj., Jovanovic, V. M., Nogueira, J. A., Varela, H., Lopes, P. P., Strmcnik, D., Stamenkovic, V. R., and Markovic, N. M. Fri . "Tuning of Catalytic Properties for Electrooxidation of Small Organic Molecules on Pt-Based Thin Films via Controlled Thermal Treatment.". United States. doi:10.1016/j.jcat.2019.01.038.
@article{osti_1531158,
title = {Tuning of Catalytic Properties for Electrooxidation of Small Organic Molecules on Pt-Based Thin Films via Controlled Thermal Treatment.},
author = {Tripkovic, D. V. and Popovic, K. Dj. and Jovanovic, V. M. and Nogueira, J. A. and Varela, H. and Lopes, P. P. and Strmcnik, D. and Stamenkovic, V. R. and Markovic, N. M.},
abstractNote = {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.},
doi = {10.1016/j.jcat.2019.01.038},
journal = {Journal of Catalysis},
number = ,
volume = 371,
place = {United States},
year = {2019},
month = {3}
}