Synthesis of novel and environmental sustainable AgI-Ag2S nanospheres impregnated g-C3N4 photocatalyst for efficient degradation of aqueous pollutants

Sethupathi Velmurugan, Sridharan Balu, Selvakumar Palanisamy*, Thomas C.K. Yang, Vijayalakshmi Velusamy, Shih Wen Chen, El Said I. El-Shafey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In recent years, synthesis of environmentally sustainable novel photocatalyst materials is of interest to the researchers working in the wide range of applications, including environmental remediation. In the present work, we describe the synthesis of environmentally sustainable and reusable AgI-Ag2S nanospheres impregnated graphitic carbon nitride (AgI-Ag2S@g-C3N4) photocatalyst using the hydrothermal and pyrolysis methods. The as-synthesized AgI-Ag2S@g-C3N4 (ACN) nanocomposite has been utilized for the degradation of organic pollutants in the aqueous solution. This current study confirms the highly active photocatalytic nature of ACN nanocomposite with a more comprehensive visible light absorption property. The ACN photocatalyst shows enhanced degradation efficiency towards Evans Blue (EB) and Congo red (CR) than that of other investigated materials such as g-C3N4 and AgI-Ag2S. The photocatalytic degradation of EB and CR was studied using different wt% containing AgI-Ag2S in ACN. The maximum degradation of EB and CR was achieved by 4 wt% and 2 wt% containing AgI-Ag2S in ACN. The ACN-4 wt% and ACN-2 wt% photocatalyst can able to degrade 98.4 and 94.2% of EB and CR within 50 min and 30 min, respectively. The photoelectrochemical measurements of ACN confirmed its excellent charge separation and the interfacial charge transport resistance.

Original languageEnglish
Article number143991
JournalApplied Surface Science
Volume500
DOIs
Publication statusPublished - Jan 15 2020

Keywords

  • AgS/AgI nanospheres
  • Graphitic carbon nitride nanocomposite
  • Hydrothermal and pyrolysis method
  • Organic pollutants
  • Photocatalysis
  • Photoelectrochemistry

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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