Document Details

Document Type : Thesis 
Document Title :
Green Synthesis, Characterization and Photocatalytic Activity of Biogenic Silver Nanoparticle
التوليف الأخضر والتوصيف والنشاط التحفيزي لجسيمات الفضة النانونية الحيوية
 
Subject : Faculty of Science 
Document Language : Arabic 
Abstract : Senna leaves have been used in traditional folk medicine for the treatment of colon infections. Silver nanoparticles were fabricated by using an aqueous extract of Senna leaf extract as a reducing agent with cetyltrimethylammonium bromide (CTAB). Morphology of AgNPs was determined with transmission electron microscope, scanning electron microscope, Energy-dispersive X-ray spectroscope, Fourier transform infra-red spectroscope, and X-ray diffraction patterns. The Ag+ ions were reduced into metallic silver by the primary -OH groups of water soluble constituent of Senna leaf extract. CTAB concentrations have significant impact on the color of AgNPs and position of surface plasmon resonance band. The AgNPs were used as an activator for potassium persulfate (K2S2O8) to the oxidative degradation of Congo red. The degradation of Congo red was promoted with increasing concentrations of K2S2O8 and decreasing concentrations of Congo red. The results showed that the CR degradation increased with increasing temperature. The maximum Congo red degradation was observed at pH 6.7, whereas at pH above and below 6.7, the efficiency of Congo red degradation was decreased. 
Supervisor : Prof. Dr. Zaheer Khan 
Thesis Type : Master Thesis 
Publishing Year : 1444 AH
2022 AD 
Co-Supervisor : Prof. Shuail Al-Thubaiti 
Added Date : Tuesday, February 28, 2023 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عزة فواز الثعليAl Thaali, Azza FawazResearcherMaster 

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