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author：

Cheng, H. (Cheng, H..) [1] | Li, Y. (Li, Y..) [2] | Wang, Z. (Wang, Z..) [3] | Liu, X. (Liu, X..) [4] | Jin, H. (Jin, H..) [5] | Xu, J. (Xu, J..) [6] | Guan, L. (Guan, L..) [7]

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Scopus

Abstract：

Two-electron　oxygen　reduction　reaction　(2e−　ORR)　offers　a　sustainable　pathway　for　hydrogen　peroxide　production,　yet　its　efficiency　relies　on　cost-effective　electrocatalysts　with　tailored　active　sites.　Herein,　a　hybrid　ZnO@ZnO2-x　nanorod　with　tunable　oxygen　vacancies　(Ov)　in　the　outer-skin　peroxidate　thin　film　was　developed　as　a　neutral　electrocatalyst　for　hydrogen　peroxide　production　through　cation-terminated　facet-engineering　and　surface　amorphous　peroxidation.　The　optimized　ZnO@ZnO2-x　(named　am-ZNR-180-24)　electrocatalyst　with　a　moderate　oxygen　vacancy　concentration　(∼17.9　at.%　from　XPS)　on　{0001}　polar-facets　demonstrates　a　nearly　100　%　selectivity　for　H2O2　generation,　achieving　a　high　production　rate　of　11.63　mol·gcat.−1·h−1,　with　ultrahigh　and　stable　Faradaic　efficiency　(＞90　%)　in　a　flow-cell　system,　which　ranks　among　the　highest　levels　of　reported　metal　compounds　electrocatalysts.　Characterizations　and　theoretical　results　unveil　that　Ov　on　the　polar　(002)　plane　modulate　the　Zn　3d-band　center,　optimizing　the　adsorption　of　*OOH　intermediates　to　favor　2e−　ORR.　©　2025　Elsevier　Inc.

Keyword：

Crystal facet engineering Hydrogen-peroxide synthesis Oxygen-vacancy Surface amorphization Two-electron oxygen reduction Zinc oxide

Community：

  • [ 1 ] [Cheng H.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 2 ] [Cheng H.]College of Chemistry and Materials Science, Fujian Normal University, Fujian, Fuzhou, 350007, China
  • [ 3 ] [Cheng H.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 4 ] [Li Y.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 5 ] [Li Y.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 6 ] [Li Y.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 7 ] [Wang Z.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 8 ] [Wang Z.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 9 ] [Wang Z.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 10 ] [Liu X.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 11 ] [Liu X.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 12 ] [Jin H.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 13 ] [Jin H.]College of Chemistry, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 14 ] [Jin H.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 15 ] [Xu J.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 16 ] [Xu J.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 17 ] [Guan L.]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, and CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 18 ] [Guan L.]Fujian College, University of Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China

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Source ：

Journal of Colloid and Interface Science

ISSN： 0021-9797

Year： 2025

Volume： 695

9 . 4 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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