Synergetic electrocatalytic activities towards hydrogen peroxide: Understanding the ordered structure of PdNi bimetallic nanocatalysts

Tan-Thanh Huynh; Meng-Che Tsai; Chun-Jern Pan; Wei-Nien Su; Ting-Shan Chan; Jyh-Fu Lee; Bing-Joe Hwang

Electrochemistry Communications (Apr 2019)

Synergetic electrocatalytic activities towards hydrogen peroxide: Understanding the ordered structure of PdNi bimetallic nanocatalysts

Tan-Thanh Huynh,
Meng-Che Tsai,
Chun-Jern Pan,
Wei-Nien Su,
Ting-Shan Chan,
Jyh-Fu Lee,
Bing-Joe Hwang

Affiliations

Tan-Thanh Huynh: NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; Tra Vinh University, Tra Vinh, Viet Nam
Meng-Che Tsai: NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
Chun-Jern Pan: NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
Wei-Nien Su: NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; Corresponding author.
Ting-Shan Chan: Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
Jyh-Fu Lee: Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
Bing-Joe Hwang: NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; National Synchrotron Radiation Research Center, Hsin-Chu 30076, Taiwan; Correspondence to: B.-J. Hwang, NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.

Journal volume & issue: Vol. 101
pp. 93 – 98

Abstract

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Mesoporous carbon-template-supported novel-order face-centered cubic (fcc) structured bimetallic PdNi nanocatalysts were prepared for the ‘green synthesis’ of hydrogen peroxide (H2O2). Our results show that the alloy crystal structure of fcc-Pd050Ni050 can be structurally transformed into a face-centered tetragonal (fct) structure after hydrogen-assisted heat-treatment at 750 °C. Transformation of the fcc structure into the fct structure resulted in ordered intermetallically structured Pd050Ni050 alloys with higher alloying extents as confirmed by X-ray absorption spectroscopy (XAS) and high resolution TEM. In addition, an electrochemical detection method was developed for in situ measurement of direct H2O2 synthesis. The fct-Pd050Ni050 catalysts produced demonstrated both enhanced structural stability and higher productivity than the fcc structured nanocatalysts and in doing so potentially offer a cost-effective route to the direct synthesis of hydrogen peroxide. Keywords: Direct synthesis of H2O2, Face-centered tetragonal, Ordered structure, Palladium- nickel

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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