Document Details

Document Type : Article In Journal 
Document Title :
Effects of solvents on the stability and morphology of CTAB-stabilized silver nanoparticles
Effects of solvents on the stability and morphology of CTAB-stabilized silver nanoparticles
 
Subject : Chemistry 
Document Language : English 
Abstract : We report the effects of polar-protic and polar-aprotic solvents on absorption spectra and particle size of surfactant stabilized silver nanoparticles. Cysteine and cetylteimethylammonium bromide, CTAB were used as the reducing and stabilizing agents, respectively. The prepared orange color silver sols possess an unusually narrow Plasmon absorption shoulder at 450 nm. The absorbance and shape of this shoulder are affected by protic (methanol, ethanol) and aprotic (acetonitrile, DMF, DMSO and 1,4-dioxane) solvents. The observed results are interpreted in terms of the dielectric constant, boiling point, hydrogen bonding, solubilization and donation of electron density from the silver particles to the solvents. Absorbance increases with increasing the dielectric constants of reaction mixture. The particle size decreases with decreasing the hydrophobic character of protic solvents: particle size = 70, 58 and 39 nm in presence and absence of solvents (ethanol and methanol), respectively. 
ISSN : 0927-7757 
Journal Name : Colloids and Surfaces A: Physicochemical and Engineering Aspects 
Volume : 390 
Issue Number : 1 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Tuesday, November 22, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ظهير خانKhan, Zaheer ResearcherDoctoratedrkhanchem@yahoo.co.in
شعيل أحمد الثبيتيAL-Thabaitia, Shaeel AhmedResearcherDoctoratesthabiti@hotmail.com
عبدالله يوسف عبيدObaid, Abdullah YousifResearcherDoctorateaobaid@kau.edu.sa
Ziya Ahmad KhanKhan, Ziya AhmadResearcherDoctorate 
عبدالرحمن عبيد اليوبيAl-Youbia, Abdulrahman ObaidResearcherDoctorateaalyoubi@kau.edu.sa

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