Facile synthesis of 1T-WS2/graphite nanocomposite for efficient solar-driven oxygen evolution reaction

Abuzar Khan, Ibrahim Khan, Mohd Yusuf Khan, Hatim Dafallah, Ahsanulhaq Qurashi

Research output: Journal PublicationArticlepeer-review

19 Citations (Scopus)

Abstract

In this work, crystalline two-dimensional (2D) tungsten disulfide nanodisc-like structures (1T-WS2) and its nanocomposite with graphite sheets synthesized using a facile two-step solvothermal procedure for photoelectrochemical (PEC) oxygen evolution reaction (OER). The XRD patterns revealed the existence of WS2 (1T phase) crystalline structure. Both WS2 nanodiscs and graphite were ultrasonicated to exfoliate the sheets and the suspension was solvothermally treated to design a WS2/graphite (WS2/G) nanocomposite. Fascinating flower-like nanostructures composed of nanodiscs observed during the detailed morphological investigation. The FE-SEM observation demonstrated well-dispersed graphite sheets in WS2 nanodiscs. The photoelectrochemical water splitting performance of bare WS2 and WS2/G hybrid photoanodes investigated under simulated 1 SUN irradiations revealed threefold increase in the photocurrent density of WS2/G hybrid photoanode compared to WS2.

Original languageEnglish
Pages (from-to)24045-24053
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number45
DOIs
Publication statusPublished - 14 Sept 2020
Externally publishedYes

Keywords

  • 2D-tungsten disulfide
  • Graphite
  • Nanodisc
  • Photoelectrochemical
  • Solvothermal

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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