Size and shape selective syntheses of nanoparticles and their catalytic applications are
gaining considerable interest in the recent years. Homogeneous catalysis is important due to its
inherent advantages like mild reaction conditions and high selectivity. However, it suffers with
serious drawback of catalyst-product separation and recycles as compared to their heterogeneous
counterparts restricting their applications. The use of catalyst in the form of nano-size is an alternative
methodology for combination of advantages of heterogeneous and homogeneous catalysis.
Silver nanoparticles are important as they find applications in catalysis, organic transformations,
synthesis of fine chemicals and organic intermediates. This review covers an overview of the
synthesis of Ag nanoparticles, supported Ag nanoparticles and bimetallic Ag-metal nanoparticles
and their characterization by various techniques. The applications of Ag nanoparticles in several
organic transformations including C-C, C-N, C-S, C-O bond formation reactions as well as reduction
and oxidation reactions are also discussed. The use of Ag nanoparticles in catalysis is advantageous as it avoids the use of ligands;
easy separation of catalyst for recyclability makes the protocol heterogeneous and economic. Ag nanoparticles gave good catalytic activity
towards desired products due to high surface area. By considering these advantages, researchers have focused their attention towards
applications of Ag nanoparticles in catalysis.