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Nanoporous alloy aggregates: synthesis and electrocatalytic activity

Anumol, EA and Halder, Aditi and Nethravathi, C and Viswanath, B and Ravishankar, N (2011) Nanoporous alloy aggregates: synthesis and electrocatalytic activity. In: Journal of Materials Chemistry, 21 (24). pp. 8721-8726.

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Nanoporous structures are widely used for many applications and hence there have been several efforts directed towards their synthesis. While several template-based and template-less approaches are available for monometallic systems, there is no general method for the synthesis of nanoporous multicomponent systems/alloys. We present a general template-less strategy for the synthesis of nanoporous alloy aggregates by controlled aggregation of nanoparticles in the solution phase with excellent control over morphology and composition as illustrated using AuPt, AuPd, PdPt and PtRu systems as examples. The Pt-based nanoporous clusters exhibit excellent activity for methanol oxidation with good long-term stability and CO tolerance. We show that the method can be extended to produce ternary catalysts and hence we expect our method to be widely used for the synthesis of multifunctional nanoporous structures for catalysis, sensor and drug-delivery applications.

Item Type: Journal Article
Publication: Journal of Materials Chemistry
Publisher: Royal Society of Chemistry
Additional Information: Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 22 Jun 2011 09:01
Last Modified: 22 Jun 2011 09:01
URI: http://eprints.iisc.ac.in/id/eprint/38411

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