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  • Open Access

    ARTICLE

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

    F. Khana, S. Noreena, M. S. Youssefb, A. Jilanic, H. T. Alib, G. Mustafad, M. Zahida,*

    Chalcogenide Letters, Vol.22, No.9, pp. 807-820, 2025, DOI:10.15251/CL.2025.229.807

    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 More >

  • Open Access

    ARTICLE

    Research on Infrared Emissivity and Laser Reflectivity of Sn1−xErxO2 Micro/Nanofibers Based on First-Principles

    Yuanjia Xia, Fang Zhao*, Zhizun Li, Zhaogang Cheng, Jianwei Hu

    Journal of Renewable Materials, Vol.11, No.2, pp. 921-936, 2023, DOI:10.32604/jrm.2022.022840 - 22 September 2022

    Abstract Sn1−xErxO2 (x = 0%, 8%, 16%, 24%) micro/nanofibers were prepared by electrospinning combined with heat treatment using erbium nitrate, stannous chloride and polyvinylpyrrolidone (PVP) as raw materials. The target products were characterized by thermogravimetric analyzer, X-ray diffrotometer, fourier transform infrared spectrometer, scanning electron microscope, spectrophotometer and infrared emissivity tester, and the effects of Er3+ doping on its infrared and laser emissivity were studied. At the same time, the Sn1−xErxO2 (x = 0%, 16%) doping models were constructed based on the first principles of density functional theory, and the related optoelectronic properties such as their energy band structure,… More >

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