Simultaneous doping of sulfur and chloride ions into ZnO nanorods for improved photocatalytic properties towards degradation of methylene blue - Université de Lorraine
Journal Articles Ceramics International Year : 2021

Simultaneous doping of sulfur and chloride ions into ZnO nanorods for improved photocatalytic properties towards degradation of methylene blue

Abstract

In this study, we have successfully doped sulfide (S-2) and chloride (Cl-1) simultaneously into ZnO by hydrothermal method. The structure, morphology, composition and optical properties of the prepared S-Cl doped ZnO nanostructures were investigated by x-ray diffraction (XRD), scanning electron microscopy (SEM), scanning transmission electron microcopy (STEM), energy dispersive spectroscopy(EDX) and UV-visible (UV-Vis) spectroscopy techniques. After, doping of both S and Cl into ZnO no significant alteration in the nanorod morphology was noticed. The wurtizite crystal structure of ZnO was retained with a red shift in the 2Ɵ towards high angle. The XRD results are supported by the high resolution transmission electron microscopy. The elemental analysis revealed a successful doping of S and Cl into ZnO structure. Importantly, the optical band gap of ZnO was decreased 2.9 eV upon doping of S and Cl ions. Thus, the nonmetal doping via S and Cl has significantly enhanced the photocatalytic properties of ZnO towards methylene blue (MB) due to high density of active sites and decreased charge recombination rate of electron-hole pairs. The photo-degradation efficiency towards MB reached 99.64% upon using S and Cl doped ZnO photocatalyst using optimum dose of 15 mg and initial dye concentration of 1.87×10-6M. The use of simultaneous nonmetal doping concept could of great importance for the preparation of other nanostructured materials and their use in potential applications like solar cells, and photoelectrochemical water splitting.
Fichier principal
Vignette du fichier
Final Zaheer 20-10-2021 Revised-1.pdf (2.13 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03428810 , version 1 (15-11-2021)

Licence

Identifiers

Cite

Zaheer Ahmed Ujjan, Muhammad Ali Bhatti, Aqeel Ahmed Shah, Aneela Tahira, Nek Muhammad Shaikh, et al.. Simultaneous doping of sulfur and chloride ions into ZnO nanorods for improved photocatalytic properties towards degradation of methylene blue. Ceramics International, 2021, ⟨10.1016/j.ceramint.2021.11.098⟩. ⟨hal-03428810⟩
37 View
85 Download

Altmetric

Share

More