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Designing highly active Unique Hollow@ (Au@Pt) core–shell nanostructure as electro-catalyst for ethanol oxidation reactions

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Abstract

A Unique Hollow@ (Au@Pt) core–shell nanostructure has been prepared by the in-situ sacrificial template method. Silica nanoparticles were used as a template which synthesized according to the Stöber synthesis method. A one-step procedure was applied to synthesis core–shell particles, followed by selective etching of silica particles by HF solution to synthesis the mono-dispersed hollow structure. The prepared Hollow@(Au@Pt) nanostructures can be used as superior catalysts for electrochemical ethanol oxidation. The results confirmed the formation of nanoparticles consisting of integrating two core–shell structures, forming a shell around the silica core, consisting of the core–shell structure of gold-centered and platinum-coated shells. Most importantly, core–shell structures showed excellent electro-catalytic activity. The electrochemical active surface area (ECSA) for SiO2@(Au@Pt), and Hollow@(Au@Pt) was 49.2, and 104.8 m2 g−1. The retention of mass activity for ethanol electro-oxidation, after 60 min, was 99.07% and 99.41% for SiO2@(Au@Pt), and Hollow@(Au@Pt), respectively.

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Funding

This work was supported and funded by Iran National Science Foundation (INSF) [Grant Number 93007637].

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Authors and Affiliations

  1. Department of Materials and Metallurgical Engineering, Amirkabir University of Technology (Tehran Polytechnic), P.O. Box, Tehran, 15875-4413, Iran

    Neda Arabi, Malek Naderi & Milad Rezaei

  2. Graphene and Advanced Materials Laboratory (GAMLab), Amirkabir University of Technology, Tehran, Iran

    Neda Arabi & Malek Naderi

  3. STU Centre for Nanodiagnostics, University Science Park Bratislava Centre, Slovak University of Technology, Bratislava, Slovakia

    Viliam Vretenár

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  1. Neda Arabi
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  2. Malek Naderi
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Contributions

N.A.: Writing—Original Draft, Investigation, Formal analysis, Validation; M.N.: Supervision, Conceptualization, Methodology, Validation, Data curation, Review & Editing; M.R.: Counselor, Conceptualization, Methodology, Validation, Data curation, Review & Editing; V.V: Formal analysis, Validation.

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Correspondence to Malek Naderi.

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Arabi, N., Naderi, M., Rezaei, M. et al. Designing highly active Unique Hollow@ (Au@Pt) core–shell nanostructure as electro-catalyst for ethanol oxidation reactions. J IRAN CHEM SOC 19, 4261–4274 (2022). https://doi.org/10.1007/s13738-022-02599-4

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