کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4908755 | 1362583 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decoration of ZnO microstructures with Ag nanoparticles enhanced the catalytic photodegradation of methylene blue dye
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
ZnO microstructures decorated with Ag nanoparticles photocatalysts synthesized using a simple sol-gel method at different Ag content. The prepared photocatalysts were then characterized by XRD, FESEM, EDX and TEM shows that the ZnO microstructures successfully decorated with Ag nanoparticles and influenced the catalytic photodegradation performance of methelyne blue dye under UV light irradiation. The effect of different Ag content on the structural, surface morphology and catalytic photodegradation of Ag nanoparticles decorated microstructures ZnO were analyzed. The results show that there is a trend of increasing photocatalytic activity with Ag content of between 2.33-63.31Â at.% where the highest photodegradation efficiency 87.74% and photodegradation rate constant, k of 0.032Â minâ1 for degradation of methelyne blue with 60Â min of irradiation. The enhancement of the photocatalysis activity with increasing Ag content can be explained by the increase in the electron-hole pair lifetimes due to electrons promoted to the conduction band are trapped in the Ag nanoparticles which acted as electron sinks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 5, Issue 4, August 2017, Pages 3963-3972
Journal: Journal of Environmental Chemical Engineering - Volume 5, Issue 4, August 2017, Pages 3963-3972
نویسندگان
H.A. Rafaie, R.M. Nor, M.S. Azmina, N.I.T. Ramli, R. Mohamed,