Redox-responsive polymer template as an advanced multifunctional catalyst support for silver nanoparticles

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dc.contributor.author Dolatkhah, Asghar
dc.contributor.author Jani, Purvil
dc.contributor.author Wilson, Lee D
dc.date.accessioned 2018-08-28T07:53:56Z
dc.date.available 2018-08-28T07:53:56Z
dc.date.issued 2018-08
dc.identifier.citation Dolatkhah, Asghar; Jani, Purvil and Wilson, Lee DRedox-responsive polymer template as an advanced multifunctional catalyst support for silver nanoparticles, Langmuir, DOI: 10.1021/acs.langmuir.8b02336, Aug. 2018. en_US
dc.identifier.issn 0743-7463
dc.identifier.issn 1520-5827
dc.identifier.uri https:/doi.org/10.1021/acs.langmuir.8b02336
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3883
dc.description.abstract Hybridization of metal NPs with redox-switchable polymer supports not only mitigates their aggregation, but also introduces interfacial electron pathways desirable for catalysis and numerous other applications. The large surface area and surface accessible atoms for noble metal nanoparticles (e.g., Ag, Au, Pt) offer promising opportunities to address challenges in catalysis and environmental remediation. Herein, Ag NPs were supported onto redox-switchable polyaniline (PANI) that acts as an advanced multifunctional conducting template for enhanced catalytic activity. At the initial stage of reduction of Ag+, leucoemeraldine (LE) is oxidized in-situ to pernigraniline (PG) which acts as interfacial pathway between NPs for electron transport. With the contribution of BH4?, PG acts as an electron-acceptor site which creates interfacial electron-hole pairs, serving as additional active catalytic reduction sites. The use of a redox-responsive composite system as a template enhances catalyst performance through adjustable charge injection across interfacial sites, along with catalyst reusability for the reduction of 4-nitrophenol (4-NPh). Strikingly, from XPS results it was observed that in-situ reduction of Ag+ onto the conductive polymer alters the electronic character of the catalyst. The unique multi-electronic effects of such Ag supported NPs enrich the scope of such catalytic systems via a tunable interface, diversified catalytic activity, fast kinetics, minimization of Ag NPs aggregation, and maintenance of high stability under multiple reaction cycles.
dc.description.statementofresponsibility by Asghar Dolatkhah, Purvil Jani and Lee D. Wilson
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.subject Interface communication en_US
dc.subject in-situ reduction en_US
dc.subject noble metal nanoparticles en_US
dc.subject redox-responsive en_US
dc.subject PANI en_US
dc.subject nitrophenol en_US
dc.subject catalysis en_US
dc.title Redox-responsive polymer template as an advanced multifunctional catalyst support for silver nanoparticles en_US
dc.type Article en_US
dc.relation.journal Langmuir


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