@article{ART002845891},
author={Chadha Neakanshika and Sharma Rahul and Saini Parveen},
title={A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction},
journal={Carbon Letters},
issn={1976-4251},
year={2021},
volume={31},
number={6},
pages={1125-1131},
doi={10.1007/s42823-021-00234-5}
TY - JOUR
AU - Chadha Neakanshika
AU - Sharma Rahul
AU - Saini Parveen
TI - A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction
JO - Carbon Letters
PY - 2021
VL - 31
IS - 6
PB - Korean Carbon Society
SP - 1125
EP - 1131
SN - 1976-4251
AB - Lately, Raman spectroscopy has become powerful tool for quality assessment of graphene analogues with identifcation of intensity ratio of Raman active D-band and G-band (ID/IG ratio) as a vital parameter for quantifcation of defects. However, during chemical reduction of graphitic oxide (GrO) to reduced GrO (RGrO), the increased ID/IG ratio is often wrongly recognized as defect augmentation, with “formation of more numerous yet smaller size sp2 domains” as its explanation. Herein, by giving due attention to normalized peak height, full-width half-maxima and integrated peak area of Raman D- and G-bands, and compliment the fndings by XRD data, we have shown that in-plane size of sp2 domains actually increases upon chemical reduction. Particularly, contrary to increased ID/IG ratio, the calculated decrease in integrated peak area ratio (AD/AG ratio) in conjunction with narrowing of D-band and broadening of G-band, evinced the decrease in in-plane defects. Finally, as duly supported by reduction induced broadening of interlayer-spacing characteristic XRD peak and narrowing of~43° centered XRD hump, we have also shown that the sp2 domains actually expands in size and the observed increase in ID/IG ratio is indeed due to increase in across-plane defects, formed via along-the-layer slicing of graphitic domains.
KW - Graphitic oxide (GrO) · Graphene · Reduced graphene oxide (RGO) · Number of layers · D-band · G-band · Defect density · Crystallite size · Graphitic domains · Sp2 domains · X-ray difraction · Full-width half-maximum (FWHM) · Raman spectroscopy
DO - 10.1007/s42823-021-00234-5
ER -
Chadha Neakanshika, Sharma Rahul and Saini Parveen. (2021). A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction. Carbon Letters, 31(6), 1125-1131.
Chadha Neakanshika, Sharma Rahul and Saini Parveen. 2021, "A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction", Carbon Letters, vol.31, no.6 pp.1125-1131. Available from: doi:10.1007/s42823-021-00234-5
Chadha Neakanshika, Sharma Rahul, Saini Parveen "A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction" Carbon Letters 31.6 pp.1125-1131 (2021) : 1125.
Chadha Neakanshika, Sharma Rahul, Saini Parveen. A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction. 2021; 31(6), 1125-1131. Available from: doi:10.1007/s42823-021-00234-5
Chadha Neakanshika, Sharma Rahul and Saini Parveen. "A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction" Carbon Letters 31, no.6 (2021) : 1125-1131.doi: 10.1007/s42823-021-00234-5
Chadha Neakanshika; Sharma Rahul; Saini Parveen. A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction. Carbon Letters, 31(6), 1125-1131. doi: 10.1007/s42823-021-00234-5
Chadha Neakanshika; Sharma Rahul; Saini Parveen. A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction. Carbon Letters. 2021; 31(6) 1125-1131. doi: 10.1007/s42823-021-00234-5
Chadha Neakanshika, Sharma Rahul, Saini Parveen. A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction. 2021; 31(6), 1125-1131. Available from: doi:10.1007/s42823-021-00234-5
Chadha Neakanshika, Sharma Rahul and Saini Parveen. "A new insight into the structural modulation of graphene oxide upon chemical reduction probed by Raman spectroscopy and X-ray diffraction" Carbon Letters 31, no.6 (2021) : 1125-1131.doi: 10.1007/s42823-021-00234-5
