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

Karuna Kara Mishra; Kalpataru Panda; Niranjan Kumar; Deepika Malpani; T. R. Ravindran; Om P. Khatri

doi:10.1016/j.jiec.2017.12.005

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

Karuna Kara Mishra
, Kalpataru Panda
, Niranjan Kumar^*
, Deepika Malpani
, T. R. Ravindran
, Om P. Khatri

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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 sp² 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 sp³ into sp² planar phase.

Original language	English
Pages (from-to)	97-105
Number of pages	9
Journal	Journal of Industrial and Engineering Chemistry
Volume	61
DOIs	https://doi.org/10.1016/j.jiec.2017.12.005
Publication status	Published - 25-05-2018

All Science Journal Classification (ASJC) codes

General Chemical Engineering

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10.1016/j.jiec.2017.12.005

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title = "Nanofluid lubrication and high pressure Raman studies of oxygen functionalized graphene nanosheets",

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 sp2 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 sp3 into sp2 planar phase.",

author = "Mishra, \{Karuna Kara\} and Kalpataru Panda and Niranjan Kumar and Deepika Malpani and Ravindran, \{T. R.\} and Khatri, \{Om P.\}",

note = "Publisher Copyright: {\textcopyright} 2017 The Korean Society of Industrial and Engineering Chemistry",

year = "2018",

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doi = "10.1016/j.jiec.2017.12.005",

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T1 - Nanofluid lubrication and high pressure Raman studies of oxygen functionalized graphene nanosheets

AU - Mishra, Karuna Kara

AU - Panda, Kalpataru

AU - Kumar, Niranjan

AU - Malpani, Deepika

AU - Ravindran, T. R.

AU - Khatri, Om P.

PY - 2018/5/25

Y1 - 2018/5/25

N2 - 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 sp2 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 sp3 into sp2 planar phase.

AB - 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 sp2 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 sp3 into sp2 planar phase.

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UR - https://www.scopus.com/pages/publications/85039912722#tab=citedBy

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DO - 10.1016/j.jiec.2017.12.005

M3 - Article

AN - SCOPUS:85039912722

SN - 1226-086X

VL - 61

SP - 97

EP - 105

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

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

Abstract

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