Synthesis and characterization of MoS2/TiO2 nanocomposites for enhanced photocatalytic degradation of methylene blue under sunlight irradiation

Khan Ramsha, Riaz Adeel, Javed Sofia, Jan Rahim, Aftab Akram Muhammad, Mujahid Mohammad

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

2D nanosheets/nanoparticles based MoS2/TiO2 nanocomposites were prepared in different weight compositions which were further employed to investigate photocatalytic degradation of methylene blue. Anatase TiO2 powder was prepared via sol-gel reflux method using titanium tetraisopropoxide as Ti precursor. MoS2/TiO2 nanocomposites were prepared by in situ addition of exfoliated MoS2 (2D-nanosheets) in different weight ratios of 0.1%, 0.5%, 1%, 2% and 5% in TiO2 sol. Surface morphology, phase analysis, optical properties were studied using SEM, XRD, UV-Vis spectroscopy respectively. SEM results showed that TiO2 nanoparticles were completely adsorbed over the surface of MoS2 sheets as reflux synthesis was employed. Efficient charge carrier separation was achieved which reduced recombination, and hence, enhanced photodegradation of methylene blue was observed. The hetero-structures showed less operation time in sunlight for photodegradation of methylene blue and a highest rate constant was observed by 2 wt.% loading of MoS2 on TiO2. These composites can also be used commercially as they show promising results.

Original languageEnglish
Title of host publicationAdvanced Materials - XV
EditorsM. Muneeb Asim, M. Mansoor, M.B. Bhatty, Ejaz Ahmed Mukhtar
PublisherTrans Tech Publications Ltd
Pages137-143
Number of pages7
ISBN (Print)9783035711974
DOIs
Publication statusPublished - 2018
Externally publishedYes
Publication typeA4 Article in conference proceedings
Event15th International Symposium on Advanced Materials, ISAM 2017 - Islamabad, Pakistan
Duration: 16 Oct 201720 Oct 2017

Publication series

NameKey Engineering Materials
Volume778 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference15th International Symposium on Advanced Materials, ISAM 2017
Country/TerritoryPakistan
CityIslamabad
Period16/10/1720/10/17

Keywords

  • 2D sheets
  • Dichalcogenides
  • Nanocomposites
  • Photodegradation
  • Sol-gel reflux synthesis
  • Titania

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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