title: Utilization of hydroxypropyl carboxymethyl cellulose in synthesis of silver nanoparticles.
abstract: Hydroxypropyl carboxymethyl cellulose samples having varying degrees of substitution and varying degrees of polymerization were used to reduce silver nitrate to silver nanoparticles. UV spectral analysis of silver nanoparticles colloidal solution reveal that increasing the pH of the reduction solution leads to improvement in the intensity of the absorption band for silver nanoparticles, to be maximum at pH 11. The absorption peak intensity also enhanced upon prolonging the reaction duration up to 60 min. The conversion of silver ions to metallic silver nanoparticles was found to be temperature-dependent and maximum transformation occurs at 60 °C. The reduction efficiency of hydroxypropyl carboxymethyl cellulose was found to be affected by its degree of polymerization. Colloidal solutions of silver nanoparticles having concentration up to 1000 ppm can be prepared upon fixing the ratio between silver nitrate and hydroxypropyl carboxymethyl cellulose at 0.017-0.3g per each 100ml of the reduction solution.
authors.affiliation: Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, P.O. Box 2455, Kingdom of Saudi Arabia; Textile Research Division, National Research Center, Dokki, Cairo, Egypt. Electronic address: essamya@yahoo.com.
authors.forename: E S
authors.initials: ES
authors.lastname: Abdel-Halim
authors.affiliation: Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, P.O. Box 2455, Kingdom of Saudi Arabia.
authors.forename: Humaid H
authors.initials: HH
authors.lastname: Alanazi
authors.affiliation: Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, P.O. Box 2455, Kingdom of Saudi Arabia.
authors.forename: Salem S
authors.initials: SS
authors.lastname: Al-Deyab
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000031:analogs & derivatives* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D058105:Polymerization; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
chemical_list: D012834:Silver; D012835:Silver Nitrate; D002266:Carboxymethylcellulose Sodium
keywords: Hydroxypropyl carboxymethyl cellulose; Silver nanoparticles; Silver nitrate