Ultra-fast microwave-assisted reverse microemulsion synthesis of Fe<inf>3</inf>O<inf>4</inf>@SiO<inf>2</inf> core-shell nanoparticles as a highly recyclable silver nanoparticle catalytic platform in the reduction of 4-nitroaniline

C. Y. Lu, T. Puig, X. Obradors, S. Ricart, J. Ros

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)

Abstract

© The Royal Society of Chemistry 2016. A novel microwave-assissted reverse microemulsion method was applied to prepare Fe3O4@SiO2 core-shell nanoparticles rapidly for the first time. The morphology of the core-shell structure is controlled by tunning the reaction parameters. Nanoparticles with a very thin SiO2 coating layer (2.5 nm) containing a single Fe3O4 nanoparticle (8-9 nm) are produced. These core-shell nanoparticles can be used as solid catalytic supports for Ag nanoparticles and applied in 4-nitroaniline reduction. Transmission electron microscopy showed that the core-shell nanoparticles were decoracted with Ag nanoparticles of 7 nm in diameter. The crystal structures of the Fe3O4 and Ag nanoparticles were confirmed by X-ray diffraction. These Ag/Fe3O4@SiO2 nanocomposites showed high catalytic efficiency and recycling properties even after 20 times of repetation.
Original languageEnglish
Pages (from-to)88762-88769
JournalRSC Advances
Volume6
Issue number91
DOIs
Publication statusPublished - 1 Jan 2016

Fingerprint

Dive into the research topics of 'Ultra-fast microwave-assisted reverse microemulsion synthesis of Fe<inf>3</inf>O<inf>4</inf>@SiO<inf>2</inf> core-shell nanoparticles as a highly recyclable silver nanoparticle catalytic platform in the reduction of 4-nitroaniline'. Together they form a unique fingerprint.

Cite this