Designing a novel visible-light-driven heterostructure Ni-ZnO/S-g-C3N4photocatalyst for coloured pollutant degradation

Ali Bahadur, Shahid Iqbal, Hashem O. Alsaab, Nasser S. Awwad, Hala A. Ibrahium

Research output: Journal PublicationArticlepeer-review

50 Citations (Scopus)

Abstract

In this study, photocorrosion of ZnO is inhibited by doping Ni in the ZnO nanostructure and electron-hole recombination was solved by forming a heterostructure with S-g-C3N4. Ni is doped into ZnO NPs from 0 to 10% (w/w). Among the Ni-decorated ZnO NPs, 4% Ni-doped ZnO NPs (4NZO) showed the best performance. So, 4% Ni-ZnO was used to form heterostructure NCs with S-g-C3N4. NZO NPs were formed by the wet co-precipitation route by varying the weight percentage of Ni (0-10% w/w). Methylene blue (MB) was used as a model dye for photocatalytic studies. For the preparation of the 4NZO-x-SCN nanocomposite, 4NZO NPs were formed in situ in the presence of various concentrations of S-g-C3N4 (10-50% (w/w)) by using the coprecipitation route. The electron spin resonance (ESR) and radical scavenger studies showed that O2- and OH free radicals were the main reactive species that were responsible for MB photodegradation.

Original languageEnglish
Pages (from-to)36518-36527
Number of pages10
JournalRSC Advances
Volume11
Issue number58
DOIs
Publication statusPublished - 8 Nov 2021
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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