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المؤلفMazhar, Sidra
المؤلفQazi, Umair Yaqub
المؤلفNadeem, Nimra
المؤلفZahid, Muhammad
المؤلفJalil, Abdul
المؤلفKhan, Fareeda
المؤلفUl-Hasan, Iftikhar
المؤلفShahid, Imran
تاريخ الإتاحة2022-09-07T07:34:17Z
تاريخ النشر2022-02-01
اسم المنشورEnvironmental Science and Pollution Research
المعرّفhttp://dx.doi.org/10.1007/s11356-021-16181-7
الاقتباسMazhar, ., Qazi, U.Y., Nadeem, N. et al. Photocatalytic degradation of methylene blue using polyaniline-based silver-doped zinc sulfide (PANI-Ag/ZnS) composites. Environ Sci Pollut Res 29, 9203–9217 (2022). https://doi.org/10.1007/s11356-021-16181-7
الرقم المعياري الدولي للكتاب09441344
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114364397&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/33747
الملخصThis study set out to determine the photocatalytic degradation potential of polyaniline-based silver-doped zinc sulfide composite (PANI-Ag/ZnS) for effective degradation of methylene blue. The heterogeneous photocatalytic experiments were carried out by irradiating aqueous dye solutions with ultraviolet light (UV-254 nm). The catalysts (ZnS, Ag/ZnS, PANI-ZnS, and PANI-Ag/ZnS) were prepared successfully and characterized by Fourier Transforms Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Energy-dispersive X-ray diffraction (EDX). Combined with density functional theory calculations, a set of calculations has been performed for optimization, computation, and accuracy of the structure. After the optimization, the equilibrium lattice were a=b= (0.54447 nm), in good agreement with experimental results (a=b=c=0.54093 nm). Fermi energy levels Ef, indicating Ag-doped in ZnS as the impurity acceptor and for better visible–light photo-catalysis, narrow bandgap, and acceptor states are beneficial. The optimization of effective parameters like pH, catalyst dose, oxidant dose, dye concentration, and reaction time was carried out. The best degradation efficiency (> 95%) of PANI-Ag/ZnS composite against methylene was achieved within 60 min of reaction time under optimized conditions. The optimized conditions were recoded as follows: pH = 7, catalysts dose = 30 mg/L, oxidant dose = 3 mM, and irradiation time = 60 min under UV-254 nm for all catalysts. The central composite design (CCD) under the Response Surface Methodology (RSM) was chosen as a statistical tool to obtain the correlation of influential parameters. Five successive reusability trials were carried out to check the stability of catalysts.
راعي المشروعFunding from Deanship of Scientific Research, University of Hafr Al Batin under research group project No. G-122-2020, was used to conduct experimental and characterization studies in this paper.
اللغةen
الناشرSpringer
الموضوعDensity functional theory (DFT)
Heterogeneous photocatalysis
Polyaniline
Response surface methodology
Silver doping
Wastewater treatment
العنوانPhotocatalytic degradation of methylene blue using polyaniline-based silver-doped zinc sulfide (PANI-Ag/ZnS) composites
النوعArticle
رقم العدد6
رقم المجلد29
ESSN1614-7499
dc.accessType Full Text


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