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Photocatalytic degradation of Congo red by ZnO nanoparticles with different morphology | ||
Journal of Interfaces, Thin Films, and Low dimensional systems | ||
دوره 3، شماره 1، اسفند 2019، صفحه 219-226 اصل مقاله (512.49 K) | ||
نوع مقاله: Original Article | ||
شناسه دیجیتال (DOI): 10.22051/jitl.2020.31515.1039 | ||
نویسنده | ||
Nasibeh Molahasani* | ||
Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran | ||
چکیده | ||
In this study, ZnO nanoparticles in three shapes, spherical, rod, and sheet are synthesized by a hydrothermal method using three different surfactants, namely three ethanol amine, cetyl three methyl ammonium bromide, and sodium dodecyl sulfate. In all cases, the chemical composition, powder identification, morphology. and particle size of the final product are characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), field emission scanning electronic microscopy (FESEM), EDX elemental analysis, and UV-Vis spectroscopy. The photocatalytic activity of the nanoparticles are investigated for degradation of organic pollutants (Congo red dye). The removal tests of Congo red as a water organic pollutant indicates photocatalytic activity and absorption ability of synthesized zinc oxides. Finally, the comparison of the dye removal results show that the rod nanoparticle has more efficiency in the degradation of Congo red with 97% yield over 2 hours at pH=8. | ||
کلیدواژهها | ||
Nanoparticle؛ Zinc-Oxide؛ Absorption؛ Congo red؛ Photocatalyst | ||
عنوان مقاله [English] | ||
تخریب فوتوکاتالیستی کنگورد توسط نانوذرات اکسید روی با مورفولوژی متفاوت | ||
نویسندگان [English] | ||
نسیبه ملاحسنی | ||
گروه شیمی،واحد تهران شرق،دانشگاه آزاد اسلامی، تهران، ایران | ||
چکیده [English] | ||
در این مطالعه، نانوذرات اکسید روی در سه شکل کروی، میله ای و صفحه ای با استفاده از روش هیدروترمال و سه سورفکتانت متفاوت یعنی تری اتانول آمین ، ستیل تری متیل آمونیوم برومید و سدیم دودسیل سولفات سنتز شدند. در همه موارد، ترکیب شیمیایی، شناسایی پودر، مورفولوژی و اندازه ذرات محصول نهایی توسط اسپکتروسکوپی مادون قرمز تبدیل فوریه (FTIR) ، پراش اشعه ایکس (XRD)، میکروسکوپ الکترونی روبشی (FESEM) ، آنالیز عنصری EDX و طیف سنجی UV-Vis شناسایی شدند. فعالیت فوتوکاتالیستی نانوذرات برای تخریب آلاینده های آلی (رنگدانه کنگورد) بررسی شد. آزمایش های حذف کنگورد به عنوان یک آلاینده آلی آب، فعالیت فوتوکاتالیستی و توانایی جذب سطحی اکسیدهای روی سنتز شده را نشان می دهد. سرانجام ، مقایسه نتایج حذف رنگ نشان داد که نانوذره میله ای دارای راندمان بیشتری در تخریب کنگورد با بازده 97٪ در طی 2 ساعت در pH = 8 می باشد. | ||
کلیدواژهها [English] | ||
نانو ذره, اکسید روی, جذب سطحی, کنگورد, فوتوکاتالیست | ||
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