Nanofluid lubrication and high pressure Raman studies of oxygen functionalized graphene nanosheets

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Title
Nanofluid lubrication and high pressure Raman studies of oxygen functionalized graphene nanosheets
Author(s)
Karuna Kara Mishra; Kalpataru Panda; Niranjan Kumar; Deepika Malpani; T.R. Ravindran; Om P. Khatri
Publication Date
2018-05
Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.61, no., pp.97 - 105
Publisher
ELSEVIER SCIENCE INC
Abstract
Ultralow friction coefficient in reduced graphene oxide (rGO) nanofluid was observed at high pressure lubrication conditions. High pressure Raman spectroscopic studies of graphene oxide (GO) and rGO in a hydrostatic pressure medium in diamond anvil cell (DAC) showed an increase in G-band linewidth in GO but this value was decreased in rGO at same pressure range due to the defect relaxation in sp(2) networks. Moreover, loss of recovery of G band linewidth in decompression cycles was clearly noticed in both the samples but it was significantly higher in GO due to the irreversible sp(3) into sp(2) planar phase. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved
URI
https://pr.ibs.re.kr/handle/8788114/6197
ISSN
1226-086X
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
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