Pasricha, Renu and Bala, Tanushree and Biradar, Ankush V. and Umbarkar, Shubhangi and Sastry, Murali (2009) Synthesis of Catalytically Active Porous Platinum Nanoparticles by Transmetallation Reaction and Proposition of the Mechanism. Small, 5 (12). pp. 1467-1473. ISSN 1613-6829

PDF - Published Version Restricted to Registered users only Download (547Kb) | Request a copy

Abstract

A facile method for the synthesis of porous platinum nanoparticles by transmetallation reactions between sacrificial nickel nanoparticles and chloroplatinic acid (H2PtCl6) in solution, as well as at the constrained environment of the air–water interface, using a Langmuir–Blodgett instrumental setup is presented. To carry out the transmetallation at the air–water interface hydrophobized nickel nanoparticles are assembled as a monolayer on the sub phase containing platinum ions. The porous Pt nanoparticles obtained as a result of the reaction are found to act as extremely good catalysts for hydrogenation reaction. The products are well characterized by TEM, HRTEM, EDAX, and STEM. Attempts are made to postulate the plausible mechanism of this reaction to generate this kind of nanoparticle with controllable geometric shape and structure. This simple strategy has the potential to synthesize other nanomaterials of interest too.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Wiley-VCH Verlag Berlin.
Uncontrolled Keywords:	Transmetallation; Porous platinum; Nickel nanoparticles; Interfaces catalysts
Subjects:	Chemistry Materials Science Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	18 Oct 2012 08:19
Last Modified:	18 Oct 2012 08:19
URI:	http://npl.csircentral.net/id/eprint/719

Actions (login required)

View Item