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

Research output: Contribution to journalArticle

21 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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Oxides
Graphene
Nanocomposites
Nitrogen
Photoelectrochemical cells
Nanocrystallites
Water
Catalyst selectivity
Nanorods
Structural properties
Catalyst activity
Crystals
triethylamine

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

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

In: ACS Applied Materials and Interfaces, Vol. 7, No. 32, 19.08.2015, p. 17954-17962.

Research output: Contribution to journalArticle

Qamar, M. ; Abdalwadoud, M. ; Ahmed, M. I. ; Azad, A. M. ; Merzougui, Belabbes ; Bukola, S. ; Yamani, Z. H. ; Siddiqui, M. N. / 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. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 32. pp. 17954-17962.
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