Laser enhanced photocatalyic degradation of methylene blue using nanostructured zno catalyst based on interfacial charge transfer
Other Title(s)
الليزر المعزز للانحلال التحفيزي للمثيلين الأزرق المبني على أساس انتقال الشحنات السطحية باستخدام المحفز أوكسيد الزنك النانوي الملدن
Joint Authors
al-Bawi, Zaynab Fadil Mahdi
Wahhab, Hibah Kazim
al-Taify, Dawud Ubayd
Faris, Rawa Ahmad
Source
Issue
Vol. 16, Issue ِA (30 Jun. 2017), pp.25-30, 6 p.
Publisher
University of Baghdad Institute of Laser and Plasma for Postgraduate Studies
Publication Date
2017-06-30
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Topics
Abstract EN
In this research, annealed nanostructured ZnO catalyst water putrefaction system was built using sun light and different wavelength lasers as stimulating light sources to enhance photocatalytic degradation activity of methylene blue (MB) dye as a model based on interfacial charges transfer.
The structural, crystallite size, morphological, particle size, optical properties and degradation ability of annealed nanostructured ZnO were characterized by X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM) and UV-VIS Spectrometer, respectively.
XRD results demonstrated a pure crystalline hexagonal wurtzite with crystalline size equal to 23 nm.
From AFM results, the average particle size was 79.25nm.
All MB samples and MB with annealed nanostructured ZnO catalyst were exposed under sunlight and lasers with (632.8,532 and 405 ) with 1.6 mW\mm2 power density irradiation for (0,30,60 and 90) minutes.
UV-VIS Spectrometer was used to evaluate the photodegradiation of MB with and without annealed nanostructured ZnO catalyst where an appreciable photocatalytic generation of hydroxyl was radicals exhibited due to increasing charge separation rate and decreasing recombination rate .Nanostructured ZnO Overall results show that MB degradation achieved 66% after 90 minutes using 405nm laser irradiation, while the reaction rate constant that fits a pseudo-first order kinetics (ka) is 0.011min-1 compared to 0.0001min-1 using MB alone .
This study proved that 405 nm laser and sun light are highly efficient sources to enhance interfacial charge transfer to improve photodegredation of MB dye using annealed nanostructured ZnO.
American Psychological Association (APA)
Wahhab, Hibah Kazim& al-Bawi, Zaynab Fadil Mahdi& Faris, Rawa Ahmad& al-Taify, Dawud Ubayd. 2017. Laser enhanced photocatalyic degradation of methylene blue using nanostructured zno catalyst based on interfacial charge transfer. Iraqi Journal of Laser،Vol. 16, no. ِA, pp.25-30.
https://search.emarefa.net/detail/BIM-763138
Modern Language Association (MLA)
Wahhab, Hibah Kazim…[et al.]. Laser enhanced photocatalyic degradation of methylene blue using nanostructured zno catalyst based on interfacial charge transfer. Iraqi Journal of Laser Vol. 16, no. ِA (2017), pp.25-30.
https://search.emarefa.net/detail/BIM-763138
American Medical Association (AMA)
Wahhab, Hibah Kazim& al-Bawi, Zaynab Fadil Mahdi& Faris, Rawa Ahmad& al-Taify, Dawud Ubayd. Laser enhanced photocatalyic degradation of methylene blue using nanostructured zno catalyst based on interfacial charge transfer. Iraqi Journal of Laser. 2017. Vol. 16, no. ِA, pp.25-30.
https://search.emarefa.net/detail/BIM-763138
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 29-30
Record ID
BIM-763138