dc.contributor.author | Bhaduri, Kushanava | |
dc.contributor.author | Das, Bidya Dhar | |
dc.contributor.author | Kumar, Rawesh | |
dc.contributor.author | Mondal, Sujan | |
dc.contributor.author | Chatterjee, Sauvik | |
dc.contributor.author | Shah, Sneha | |
dc.contributor.author | Bravo-Suárez, Juan J. | |
dc.contributor.author | Chowdhury, Biswajit | |
dc.date.accessioned | 2020-12-21T20:07:32Z | |
dc.date.available | 2020-12-21T20:07:32Z | |
dc.date.issued | 2019-02-22 | |
dc.identifier.citation | Kushanava 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.8b03655 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/30984 | |
dc.description.abstract | Highly 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.publisher | American Chemical Society | en_US |
dc.rights | Copyright © 2019 American Chemical Society | en_US |
dc.subject | Transfer reactions | en_US |
dc.subject | Metal nanoparticles | en_US |
dc.subject | Gold | en_US |
dc.subject | Catalysts | en_US |
dc.subject | Catalytic reactions | en_US |
dc.title | Recyclable Au/SiO2-Shell/Fe3O4-Core Catalyst for the Reduction of Nitro Aromatic Compounds in Aqueous Solution | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Bravo-Suárez, Juan J. | |
kusw.kudepartment | Chemical and Petroleum Engineering | en_US |
dc.identifier.doi | 10.1021/acsomega.8b03655 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-6484-374X | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-3257-2065 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |