@article {47372,
	title = {Synthesis of graphene from activated carbon at liquid nitrogen temperature and its detailed structural analysis},
	journal = {Applied Physics A-Materials Science \& Processing},
	volume = {127},
	year = {2021},
	month = {MAY},
	pages = {319},
	type = {Article},
	abstract = {<p>The present study deals with the synthesis of graphene using thermal quenching of pre-heated activated carbon (a-C) (1370 K for 3 h) at liquid nitrogen temperature and its detailed structural analysis using XRD, TEM, FTIR and Raman spectroscopy. The analysis of lattice parameters (L-a, L-c,L- and d) of constituent nanographitic domains using XRD shows restoration of graphene-like structure in the resultant product (a-CL). TEM image reveals porosity and partially crystallinity (from SAED) in a-C. While thin layers of graphene are observed in the TEM images of a-CL Deconvoluted Raman spectra have been used to investigate the evolution of crystalline behaviour of a-C with temperature in view of Ferrari and Robertson{\textquoteright}s three-stage model. The evolution of G peak and increase in I-D/I-G reveals restoration of crystallinity in a-CL. The development of the D peak indicates disordering of graphite but ordering of amorphous carbon. The reported method is technologically beneficial for graphene synthesis for large number of applications such as supercapacitors, H-2 storage, gas separation and purification.</p>},
	keywords = {activated carbon, Amorphous carbon, graphene, H-2 storage applications, Raman spectroscopy, Supercapacitors},
	issn = {0947-8396},
	doi = {10.1007/s00339-021-04416-w},
	author = {Sharma, Preeti and Sharma, Geeta and Punia, Rajesh}
}
