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ARTICLE

Fe-doped SnO₂-SnS₂/polypyrrole: an efficient photocatalyst for the degradation of organic pollutant in wastewater

F. Khan^a, S. Noreen^a, M. S. Youssef^b, A. Jilani^c, H. T. Ali^b, G. Mustafa^d, M. Zahid^a,*

a Department of Chemistry, University of Agriculture, Faisalabad- 38040 Pakistan
b Department of Mechanical Engineering, College of Engineering, Taif University, Kingdom of Saudi Arabia
c Clean Energy Technologies Research Institute (CETRI), Process Systems Engineering, Faculty of Engineering & Applied Science, University of Regina, 3737 Wascana Parkway, Regina, Canada
d Department of Chemistry, University of Okara, Okara Pakistan

* Corresponding Author:

Chalcogenide Letters 2025, 22(9), 807-820. https://doi.org/10.15251/CL.2025.229.807

Received 21 June 2025; Accepted 15 September 2025;

Abstract

In this study Fe doped SnO₂-SnS₂ (FS) and Fe doped SnO₂-SnS₂-polypyrrole (FS-PPY) were synthesized and studied for the methylene blue (MB) egrdation under UV light. The morphological and structural characterizations were carried out by FTIR, SEM-EDX, XRD and XPS. It has been found that FS-PPy degrade methylene blue upto 98 % under optimized conditions as pH =3, dye concentration = 10 ppm, oxidant dose = 2 mM. The Langmuir-Hinshelwood kinetics model fitted well. The optimization was studied using response surface methodology. Scavengers study was carried out to find the active species. Reusability of photocatalyst was evaluated up to 5 cycles.

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Keywords

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