UV-assisted synthesis of reduced graphene oxide zinc sulfide composite with enhanced photocatalytic activity

Koushik Chakraborty, Sankalpita Chakrabarty, Poulomi Das, Surajit Ghosh, Tanusri Pal

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


We report the ultra violet (UV) light assisted photocatalytic reduction of Graphene Oxide (GO) in aqueous suspension by accepting the photo induced electrons from Zinc Sulfide (ZnS) and simultaneous synthesis of RGO-ZnS composite. The XRD and FTIR studies authenticate the reduction of GO and synthesis of RGO-ZnS composite. The reduction is also confirmed by Raman spectroscopy. The RGO-ZnS composite shows an enhancement of photo catalytic activity in compared to ZnS towards degradation of Rhodamine B under UV light irradiation. Enhanced photocatalytic degradation is attributed to the synergistic effect between favorable matching of the conduction band of ZnS to the work function of conductive RGO. The recycled use of RGO-ZnS composite does not noticeably decrease its photodegradation efficiency. The composite synthesized via photocatalytic reduction process not only provide us to control the reduction of GO but also opens up new avenues to synthesis photo sensitive RGO based composite materials for optoelectronic devising.

Original languageEnglish
Pages (from-to)8-14
Number of pages7
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
StatePublished - 1 Feb 2016
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Department of Science and Technology (DST), New Delhi , India via grant SR/FTP/PS-113/2010 . We are also thankful to the University Grants Commission (UGC) , and DST, New Delhi, India for providing special assistance and infrastructural support to the Department of Physics & Technophysics, Vidyasagar University, via SAP and FIST program, respectively.

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.


  • Graphene oxide
  • Photocatalysis
  • Reduced graphene oxide-semiconductor composite
  • UV-assisted reduction
  • ZnS nanorod


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