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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۰، شماره ۴، صفحات ۱۰۱۲-۱۰۲۲
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Impact of Silver Ions Doping and Calcination on the Physicochemical Characteristics of TiO2 Nanoparticles with Photocatalytic and Regeneration Potential |
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| چکیده انگلیسی مقاله |
Visible light-driven Ag+ doped TiO2 photocatalysts were successfully prepared with modified low-cost Liquid Impregnation (LI) method yielding up to 95 % product. The native and newly synthesized photocatalysts were calcined at various temperatures and characterized using diffused reflectance spectroscopy (UV/Vis-DRS), XRD, XPS, TEM, EDX, XRF, and pHPZC analyses. The XRD results for all samples revealed that the anatase phase was dominant at all calcination temperatures. The Ag+ doping reduced the bandgap energy to 2.88 eV, which significantly enhanced the photocatalytic efficiency towards Methylene Blue (MB) under compact fluorescent light. The photocatalytic efficacy of the nano-catalysts was also tested using a binary solution containing a model dye (MB) and Cd2+ under ordinary compact fluorescent light. The presence of competitive ions i.e. Cd2+ increased the MB degradation up to 4 folds under the ambient conditions whereby the maximum amount of MB adsorbed by nano-catalysts reached 46 mg/g. The high-temperature combustion method was found more effective for the regeneration of TiO2 photocatalysts compared to the chemical regeneration. The reusable character of the regenerated samples posed a significant impact on the current work to be applied in wastewater treatment in bulk. |
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| کلیدواژه‌های انگلیسی مقاله |
Titanium dioxide,Doping,Degradation,Photocatalysis,regeneration |
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| نویسندگان مقاله |
Najm Us Saqib |
School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, MALAYSIA
Rohana Adnan |
School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, MALAYSIA
Irfan Shah |
Department of Chemistry, The University of Lahore, Sargodha Campus, PAKISTAN
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| نشانی اینترنتی |
https://ijcce.ac.ir/article_40343_d915fb74a942fb766d7b2bac1d92b0ef.pdf |
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| زبان مقاله منتشر شده |
en |
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