Literature DB >> 22007950

Self-regeneration of Pd-LaFeO3 catalysts: new insight from atomic-resolution electron microscopy.

Michael B Katz1, George W Graham, Yingwen Duan, Hong Liu, Carolina Adamo, Darrell G Schlom, Xiaoqing Pan.   

Abstract

Aberration-corrected transmission electron microscopy was used to study atomic-scale processes in Pd-LaFeO(3) catalysts. Clear evidence for diffusion of Pd into LaFeO(3) and out of LaFe(0.95)Pd(0.05)O(3-δ) under high-temperature oxidizing and reducing conditions, respectively, was found, but the extent to which these processes occurred was quite limited. These observations cast doubt that such phenomena play a significant role in a postulated mechanism of self-regeneration of this system as an automotive exhaust-gas catalyst.

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Year:  2011        PMID： 22007950     DOI： 10.1021/ja2082284

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  7 in total

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Authors:  Christoph W Thurner; Nicolas Bonmassar; Daniel Winkler; Leander Haug; Kevin Ploner; Parastoo Delir Kheyrollahi Nezhad; Xaver Drexler; Asghar Mohammadi; Peter A van Aken; Julia Kunze-Liebhäuser; Aligholi Niaei; Johannes Bernardi; Bernhard Klötzer; Simon Penner
Journal:  ACS Catal       Date:  2022-06-14       Impact factor: 13.700

2.  Understanding electrochemical switchability of perovskite-type exsolution catalysts.

Authors:  Alexander K Opitz; Andreas Nenning; Vedran Vonk; Sergey Volkov; Florian Bertram; Harald Summerer; Sabine Schwarz; Andreas Steiger-Thirsfeld; Johannes Bernardi; Andreas Stierle; Jürgen Fleig
Journal:  Nat Commun       Date:  2020-09-23       Impact factor: 14.919

3.  Enhancing electrochemical water-splitting kinetics by polarization-driven formation of near-surface iron(0): an in situ XPS study on perovskite-type electrodes.

Authors:  Alexander K Opitz; Andreas Nenning; Christoph Rameshan; Raffael Rameshan; Raoul Blume; Michael Hävecker; Axel Knop-Gericke; Günther Rupprechter; Jürgen Fleig; Bernhard Klötzer
Journal:  Angew Chem Int Ed Engl       Date:  2014-12-30       Impact factor: 15.336

4.  Ambient Pressure XPS Study of Mixed Conducting Perovskite-Type SOFC Cathode and Anode Materials under Well-Defined Electrochemical Polarization.

Authors:  Andreas Nenning; Alexander K Opitz; Christoph Rameshan; Raffael Rameshan; Raoul Blume; Michael Hävecker; Axel Knop-Gericke; Günther Rupprechter; Bernhard Klötzer; Jürgen Fleig
Journal:  J Phys Chem C Nanomater Interfaces       Date:  2015-12-17       Impact factor: 4.126

5.  Surface Chemistry of Perovskite-Type Electrodes During High Temperature CO2 Electrolysis Investigated by Operando Photoelectron Spectroscopy.

Authors:  Alexander K Opitz; Andreas Nenning; Christoph Rameshan; Markus Kubicek; Thomas Götsch; Raoul Blume; Michael Hävecker; Axel Knop-Gericke; Günther Rupprechter; Bernhard Klötzer; Jürgen Fleig
Journal:  ACS Appl Mater Interfaces       Date:  2017-10-05       Impact factor: 9.229

6.  Performance modulation through selective, homogenous surface doping of lanthanum strontium ferrite electrodes revealed by in situ PLD impedance measurements.

Authors:  Christoph Riedl; Matthäus Siebenhofer; Andreas Nenning; Gernot Friedbacher; Maximilian Weiss; Christoph Rameshan; Johannes Bernardi; Andreas Limbeck; Markus Kubicek; Alexander Karl Opitz; Juergen Fleig
Journal:  J Mater Chem A Mater       Date:  2021-12-03

7.  First-principles investigation on the segregation of Pd at LaFe1-xPdxO3-y surfaces.

Authors:  Zhi-Xue Tian; Akifumi Uozumi; Ikutaro Hamada; Susumu Yanagisawa; Hidetoshi Kizaki; Kouji Inagaki; Yoshitada Morikawa
Journal:  Nanoscale Res Lett       Date:  2013-05-01       Impact factor: 4.703
  7 in total

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