Facile synthesis of core-shell nanocomposites Au catalysts towards abatement of environmental pollutant Rhodamine B. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Ramesh, A.; Tamizhdurai, P.; Gopinath, S.; Sureshkumar, K.; Murugan, E.; Shanthi, K.
• Is Part Of: Heliyon. Volume 5:Issue 1(2019)
• Publication Date: 2019-01
• Subjects: Materials science -- Physical chemistry; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2018.e01005
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: Magnetically recoverable Au nanoparticles immobilized/stabilized on core-shell nanocomposites are synthesized by the combination of suspension polymerization as well as surface initiator atom transfer radical polymerization (SI-ATRP) methods. The magnetic core-shell supported Au nanocatalysts are namely Fe3 O4 -PAC-AuNPs, Fe3 O4 -PVBC-g-PAC-AuNPs, Fe3 O4 -HEA-AuNPs, and Fe3 O4 -PVBC-g-HEA-AuNPs. Among all the catalysts, Fe3 O4 -PVBC-g-PAC-Au NPs exhibited an excellent activity in the reduction of Rhodamine B with an apparent rate constant of 10.77 × 10 −3 s −1 and TOF value of 47.62 × 10 −3 s −1 under pseudo-first order reaction condition. Further, Fe3 O4 -PVBC-g-PAC-Au NPs has an outstanding activity and recyclability without applying any external magnetic field. This new approach provides an exciting potential way in the preparation of recyclable metal nano-catalysts with high catalytic activity.