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Efficient reduction of Graphene oxide to Graphene Nanosheets by Silica based Ionic Liquid: Synthesis, Characterization and Catalytic properties of IMD-Si/FeCl4ˉ@GNS

Abstract

The aim of the present protocol is to develop a facile route for the synthesis of novel ionic liquid (IL) functionalized graphene nano sheets (IMD-Si/FeCl4ˉ@GNS). An imidazolium IL with iron chloride as an anion (IMD-Si/FeCl4ˉ) was used to reduce graphene oxide. IMD-Si/FeCl4ˉ@GNS was well characterized by various techniques such as Fourier Transform Infrared (FTIR), Raman, Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-VIS DRS), Scanning Electron Microscope/Energy Dispersive X-ray (SEM/EDX), Elemental mapping, Transmission Electron Microscope (TEM), Powder X-ray diffraction (XRD), Thermal Gravimetric (TG), Electron Paramagnetic Resonance (EPR), and X-Ray Photoelectron Spectroscopy (XPS) analyses. The IL functionalized material was investigated for its catalytic property and found to be an efficient catalyst for the synthesis of (E)-selective substituted thiosemicarbazone derivatives. The (E)-selectivity was confirmed by the DFT calculations which showed that the (E)-isomer was stabilized by 4.90 kcal/mol more than the (Z)-isomer. The catalyst maintained its catalytic activity for six successive runs.

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Supplementary files

Article information


Submitted
19 Nov 2019
Accepted
13 Feb 2020
First published
13 Feb 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Efficient reduction of Graphene oxide to Graphene Nanosheets by Silica based Ionic Liquid: Synthesis, Characterization and Catalytic properties of IMD-Si/FeCl4ˉ@GNS

M. U. Khan, S. Siddiqui, W. khan and Z. N. Siddiqui, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/C9NJ05768D

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