title: Synthesis of silver nanoparticles in aqueous aminopolycarboxylic acid solutions via γ-irradiation and hydrogen reduction.
abstract: Formation of silver nanoparticles in the presence of various aminipolycarboxylic acids (APCAs) such as iminodiacetic acid (IDA), nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), N-(2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA), diethylenetriaminepentaacetic acid (DTPA), and N,N,N',N″,N‴,N‴-triethylenetetraminehexaacetic acid (TTHA) was studied. Monodispersed silver nanoparticles capped by carboxylate groups of APCAs were prepared by the reduction of Ag(+) ions induced by either γ-radiolytic or H2 reduction at room temperature. APCAs act as stabilizer to avoid the aggregation of silver nanoparticles. It has been shown that H2-induced reduction of Ag(+) is possible at room temperature in the presence of APCAs. TTHA stabilized γ-reduced particles showed reactivity towards oxygen. The formed particles were characterized by UV-vis absorption, X-ray diffraction, zetasizer and transmission electron microscopy.
authors.affiliation: Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
authors.forename: Vishwabharati V
authors.initials: VV
authors.lastname: Malkar
authors.affiliation: Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
authors.forename: Tulsi
authors.initials: T
authors.lastname: Mukherjee
authors.affiliation: Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India. Electronic address: sudhirk@barc.gov.in.
authors.forename: Sudhir
authors.initials: S
authors.lastname: Kapoor
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry; D004492:Edetic Acid / Q000031:analogs & derivatives / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D007098:Imino Acids / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D009571:Nitrilotriacetic Acid / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002264:Carboxylic Acids; D007098:Imino Acids; D012834:Silver; D006859:Hydrogen; C026059:triethylenetetraminehexaacetic acid; D004492:Edetic Acid; D009571:Nitrilotriacetic Acid; C026060:N-(hydroxyethyl)ethylenediaminetriacetic acid; C008109:iminodiacetic acid
keywords: Ag nanoparticles; Aminopolycarboxylic acids; H(2)-reduction