Component Matters : Paving the Roadmap toward Enhanced Electrocatalytic Performance of Graphitic C3N4-Based Catalysts via Atomic Tuning

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Jingxing Gu
  • Yan Huang
  • Yang Huang
  • Jingxiang Zhao
  • Zhongfang Chen

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)6004-6014
Journal / PublicationACS Nano
Volume11
Issue number6
Publication statusPublished - 27 Jun 2017

Abstract

Atomically precise understanding of componential influences is crucial for looking into the reaction mechanism and controlled synthesis of efficient electrocatalysts. Herein, by means of comprehensive experimental and theoretical studies, we carefully examine the effects of component dopants on the catalytic performance of graphitic C3N4 (g-C3N4)-based electrocatalysts. The g-C3N4 monoliths with three types of dopant elements (B, P, and S) embedded in different sites (either C or N) of the C–N skeleton are rationally designed and synthesized. The kinetics, intrinsic activity, charge-transfer process, and intermediate adsorption/desorption free energy of the selected catalysts in oxygen reduction reaction and hydrogen evolution reaction are investigated both experimentally and theoretically. We demonstrate that the component aspect within the g-C3N4 motifs has distinct and substantial effects on the corresponding electroactivities, and proper component element engineering can be a viable yet efficient protocol to render the metal-free composites as competent catalysts rivaling the metallic counterparts. We hope that this study may shed light on the empirical trial-and-error exploration in design and development of g-C3N4-based materials as well as other metal-free catalysts for energy-related electrocatalytic reactions.

Research Area(s)

  • electrocatalysis, graphitic carbon nitride, heteroatom, hydrogen evolution, oxygen reduction

Citation Format(s)

Component Matters : Paving the Roadmap toward Enhanced Electrocatalytic Performance of Graphitic C3N4-Based Catalysts via Atomic Tuning. / Pei, Zengxia; Gu, Jingxing; Wang, Yukun; Tang, Zijie; Liu, Zhuoxin; Huang, Yan; Huang, Yang; Zhao, Jingxiang; Chen, Zhongfang; Zhi, Chunyi.

In: ACS Nano, Vol. 11, No. 6, 27.06.2017, p. 6004-6014.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal