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dc.contributor.authorBhaduri, Kushanava
dc.contributor.authorDas, Bidya Dhar
dc.contributor.authorKumar, Rawesh
dc.contributor.authorMondal, Sujan
dc.contributor.authorChatterjee, Sauvik
dc.contributor.authorShah, Sneha
dc.contributor.authorBravo-Suárez, Juan J.
dc.contributor.authorChowdhury, Biswajit
dc.date.accessioned2020-12-21T20:07:32Z
dc.date.available2020-12-21T20:07:32Z
dc.date.issued2019-02-22
dc.identifier.citationKushanava Bhaduri, Bidya Dhar Das, Rawesh Kumar, Sujan Mondal, Sauvik Chatterjee, Sneha Shah, Juan J. Bravo-Suárez, and Biswajit Chowdhury ACS Omega 2019 4 (2), 4071-4081 DOI: 10.1021/acsomega.8b03655en_US
dc.identifier.urihttp://hdl.handle.net/1808/30984
dc.description.abstractHighly stable gold nanoparticles immobilized on the surface of amine-functionalized nanocomposite microspheres possessing a magnetite (Fe3O4) nanoparticle core and a silica (SiO2) shell (Au/SiO2-shell/Fe3O4-core) were prepared. These gold nanocomposite catalysts were tested for 4-nitrophenol (4-NP) and 2-nitroaniline (2-NA) reduction in aqueous solution in the temperature range 293–323 K and in the presence of aqueous NaBH4 reducing agent. The magnetically recyclable gold catalyst showed high stability (∼3 months), efficient recyclability (up to 10 cycles), and high activity (∼100% conversion within 225 s, ∼700 ppm 4-NP or 2-NA). The pseudo-first-order apparent reaction rate constants (k) of 4-NP and 2-NA reduction were 7.5 × 10–3 and 4.1 × 10–3 s–1, respectively, and with an apparent catalytic activity of 4.48 × 10–8 kmol/(m3 s).en_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsCopyright © 2019 American Chemical Societyen_US
dc.subjectTransfer reactionsen_US
dc.subjectMetal nanoparticlesen_US
dc.subjectGolden_US
dc.subjectCatalystsen_US
dc.subjectCatalytic reactionsen_US
dc.titleRecyclable Au/SiO2-Shell/Fe3O4-Core Catalyst for the Reduction of Nitro Aromatic Compounds in Aqueous Solutionen_US
dc.typeArticleen_US
kusw.kuauthorBravo-Suárez, Juan J.
kusw.kudepartmentChemical and Petroleum Engineeringen_US
dc.identifier.doi10.1021/acsomega.8b03655en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-6484-374Xen_US
dc.identifier.orcidhttps://orcid.org/0000-0003-3257-2065en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


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