title: Layer-by-layer deposition of silver/gold nanoparticles for catalytic reduction of nitroaromatics.
abstract: A general method has been fabricated to achieve normal as well as inverted core-shell architectures of silver/gold through a layer-by-layer deposition technique on a commercial anion exchange resin. Electrostatic field force of the charged resin beads supports immobilization of anionic metal precursors [MX(n)]-, in turn deposition of silver/gold nanoparticles onto the solid resin matrix and reduction of 2-nitrobenzoic acid to obtain the corresponding amines through effective catalysis. The shell thickness has been tailored made by exploiting a new method of cyclic and repetitive deposition of the desired metal precursors. Thermodynamic parameters for the reduction reaction have been presented. Kinetic study reveals a comparative account of rates between the mono- and bi-metallic nanoparticles where silver stands to be a better catalyst for the reduction of nitroaromatics.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
authors.forename: Subhra
authors.initials: S
authors.lastname: Jana
authors.forename: Surojit
authors.initials: S
authors.lastname: Pande
authors.forename: Arun Kumar
authors.initials: AK
authors.lastname: Sinha
authors.forename: Sougata
authors.initials: S
authors.lastname: Sarkar
authors.forename: Mukul
authors.initials: M
authors.lastname: Pradhan
authors.forename: Mrinmoyee
authors.initials: M
authors.lastname: Basu
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Negishi
authors.forename: Anjali
authors.initials: A
authors.lastname: Pal
authors.forename: Tarasankar
authors.initials: T
authors.lastname: Pal