Cu-doped carbon nitride: Bio-inspired synthesis of H2-evolving electrocatalysts using graphitic carbon nitride (g-C3N4) as a host material

Xiaoxin Zou, Rafael Silva, Anandarup Goswami, Teddy Asefa

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Splitting water effectively to produce hydrogen (H2) requires the development of non-noble-metal electrocatalysts that are able to make this reaction feasible and energy efficient. Herein, we present a novel "structure upgrading" synthetic approach for the design and synthesis of bio-inspired hydrogen-evolving electrocatalysts based on earth-abundant elements. Using g-C3N4 - an inexpensive inorganic polymer material - as a host material for copper ions, novel Cu-doped g-C3N4 materials with supramolecular structure, efficient electrocatalytic activity and modest overpotentials for hydrogen evolution reaction (HER) are synthesized. Compared with most single-molecule analogs of hydrogenases that work only in organic media, the supramolecular Cu-doped g-C3N4 materials can serve as heterogeneous electrocatalysts with greater stability and good catalytic activity for HER in aqueous media. The materials afford a current density as high as 10 mA cm-2 at an overpotential as low as 390 mV, and work well in acidic media for, at least, 43 h.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalApplied Surface Science
Volume357
DOIs
Publication statusPublished - Dec 1 2015

Fingerprint

Carbon nitride
Electrocatalysts
Biosynthesis
Hydrogen
Inorganic polymers
Hydrogenase
Chemical elements
Copper
Catalyst activity
Current density
Metals
Earth (planet)
cyanogen
Ions
Molecules
Water

Keywords

  • Carbon nitride
  • Copper ions
  • Electrocatalysis
  • H evolution
  • Water splitting

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Cu-doped carbon nitride : Bio-inspired synthesis of H2-evolving electrocatalysts using graphitic carbon nitride (g-C3N4) as a host material. / Zou, Xiaoxin; Silva, Rafael; Goswami, Anandarup; Asefa, Teddy.

In: Applied Surface Science, Vol. 357, 01.12.2015, p. 221-228.

Research output: Contribution to journalArticle

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