Multifunctional magnetic reduced graphene oxide dendrites: Synthesis, characterization and their applications

Roy, Ekta and Patra, Santanu and Kumar, Deepak and Madhuri, Rashmi and Sharma, Prashant K (2015) Multifunctional magnetic reduced graphene oxide dendrites: Synthesis, characterization and their applications. In: BIOSENSORS & BIOELECTRONICS, 68 . pp. 726-735.

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Abstract

In this paper, for the first time, we have reported the novel synthesis of reduced graphene oxide (r-GO) dendrite kind of nanomaterial. The proposed r-GO dendrite possesses multifunctional properties in various fields of sensing and separation. The dendrite was synthesized by chemical reaction in different steps. Initially, the r-GO sheet was conjugated with silane group modified magnetic nanoparticle, resulting in nanoparticle decorated r-GO. The above r-GO sheet was further reacted with a new r-GO sheet, resulting in the formation of r-GO dendrite type of structure. Multifunctional behavior of this r-GO dendrite structure was studied by different methods. First, magnetic properties were studied by vibrating sample magnetometer (VSM) and it was found that dendrite structure shows good magnetic susceptibility (180.2 emu/g). The proposed r-GO dendrite also shows a very good antibacterial behavior for Escherichia coli and excellent electrochemical behavior towards ferrocyanide probe molecule. Along with these, it also acts as a substrate for the synthesis of molecularly imprinted polymer for europium metal ion, a lanthanide. The proposed imprinted sensor shows a very high selectivity and sensitivity for europium metal ion (limit of detection= 0.019 mu g L-1) in aqueous as well as real samples. (C) 2015 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	BIOSENSORS & BIOELECTRONICS
Publisher:	ELSEVIER ADVANCED TECHNOLOGY
Additional Information:	Copy right for this article belongs to the ELSEVIER ADVANCED TECHNOLOGY, OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Keywords:	Reduced graphene oxide; Magnetic nanoparticle; Dendrite; Europium ion; Molecularly imprinted polymer
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	21 Apr 2015 07:48
Last Modified:	21 Apr 2015 07:48
URI:	http://eprints.iisc.ac.in/id/eprint/51347

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