Single-Pot Synthesis of 〈001〉-Faceted N-Doped Nb<inf>2</inf>O<inf>5</inf>/Reduced Graphene Oxide Nanocomposite for Efficient Photoelectrochemical Water Splitting

M. Qamar, M. Abdalwadoud, M. I. Ahmed, A. M. Azad, Belabbes Merzougui, S. Bukola, Z. H. Yamani, M. N. Siddiqui

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24 Citations (Scopus)

Abstract

Due to exciting catalytic activity and selectivity, tailoring of nanocatalysts consisting of preferred crystal facets and desired structural properties remains at the forefront of materials engineering. A facile one-step nonhydrolytic solvothermal synthesis of a nanocomposite of reduced graphene oxide and one-dimensional nitrogen-doped Nb<inf>2</inf>O<inf>5</inf> (N-NbOx) with exposed 〈001〉 facet is described. Triethylamine performed the dual role as nitrogen source and capping agent to control the size and unidirectional growth of Nb<inf>2</inf>O<inf>5</inf> nanocrystallites. The nanocomposite showed efficient visible-light-mediated (λ > 420 nm) water splitting in a photoelectrochemical cell. A plausible mechanism for the formation of N-NbOx nanorods and improved photoelectrochemical efficacy in terms of their oriented growth is proposed.

Original languageEnglish
Pages (from-to)17954-17962
Number of pages9
JournalACS Applied Materials and Interfaces
Volume7
Issue number32
DOIs
Publication statusPublished - 19 Aug 2015

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Keywords

  • nonaqueous synthesis
  • semiconductor photocatalyst
  • solvothermal
  • sunlight
  • water splitting

ASJC Scopus subject areas

  • Materials Science(all)

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