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Research Article

Surface active-site engineering in hierarchical PtNi nanocatalysts for efficient triiodide reduction reaction

Jiabin Cui1,§, Pin Ma2,4,§, Weidan Li1, Rui Jiang1, Lirong Zheng3, Yuan Lin2, Chang Guo1( ), Xiong Yin1( ), Leyu Wang1
State Key Laboratory of Chemical Resource Engineering Innovation Centre for Soft Matter Science and Engineering College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
Beijing National Laboratory for Molecular Sciences Key Laboratory of Photochemistry CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
Pillar of Engineering Product Development Singapore University of Technology and Design Singapore 487372 Singapore

§Jiabin Cui and Pin Ma contributed equally to this work.

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Graphical Abstract

Abstract

Hierarchical Pt-alloys enriched with active sites are highly desirable for efficient catalysis, but their syntheses generally need time-consuming and elaborate annealing treatment at high temperature. We herein report a surface active-site engineering strategy for constructing the hierarchical PtNi nanocatalysts with an atomic Pt-skin layer (PtNi@Pt-SL) towards efficient triiodide reduction reaction (TRR) via an acid-dealloying approach. The facile acid-dealloying process promotes the formation of surface Pt active sites on the hierarchical Pt-alloys, and thus results in good catalytic performance towards TRR. Theoretical calculation reveals that the enhanced catalytic property stems from the moderate energy barriers for iodide atoms on the surface Pt active-sites. The surface active-site engineering strategy paves a new way for the design of active and durable electrocatalysts.

Keywords

surface active-site engineeringPt skin-layerhierarchical structuredealloyingtriiodide reduction reaction

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Nano Research
Volume 14 Issue 12,
December 2021
Pages 4714-4718
DOI: 10.1007/s12274-021-3410-y
Cite this article:
Cui J, Ma P, Li W, et al. Surface active-site engineering in hierarchical PtNi nanocatalysts for efficient triiodide reduction reaction. Nano Research, 2021, 14(12): 4714-4718. https://doi.org/10.1007/s12274-021-3410-y
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Received: 30 December 2020
Revised: 12 February 2021
Accepted: 21 February 2021
Published: 29 April 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021
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