<abstract xmlns="http://www.w3.org/1999/xhtml">
				
				<p> Coal is a natural energy resource which is mainly used for energy production via combustion. Coal has nanocrystals embedded in it, formed during the coalification process, and is an ideal precursor for nano-carbon dots and diamonds. Herein, we report a facile top-down method to synthesise nanodots and diamonds of the size of 5 nm to 10 nm from three different types of coal by simple chemical leaching. TEM analysis revealed the formation of a mixture of carbon dots, graphene layers, and quantum dots in bituminous coal and sub-bituminous coal. Raman analysis confirmed the existence of synthesized nanodiamond and nano-carbon mixed phase with defects associated with it. It is concluded that graphene quantum dots, nanodiamonds, graphene sheets and carbon dots present in coal can be extracted by simple chemical treatment. These structures can be tuned to photoluminescent material for various optoelectronic applications or energy harvesting devices like super capacitors.</p>
			</abstract>

Coal is a natural energy resource which is mainly used for energy production via combustion. Coal has nanocrystals embedded in it, formed during the coalification process, and is an ideal precursor for nano-carbon dots and diamonds. Herein, we report a facile top-down method to synthesise nanodots and diamonds of the size of 5 nm to 10 nm from three different types of coal by simple chemical leaching. TEM analysis revealed the formation of a mixture of carbon dots, graphene layers, and quantum dots in bituminous coal and sub-bituminous coal. Raman analysis confirmed the existence of synthesized nanodiamond and nano-carbon mixed phase with defects associated with it. It is concluded that graphene quantum dots, nanodiamonds, graphene sheets and carbon dots present in coal can be extracted by simple chemical treatment. These structures can be tuned to photoluminescent material for various optoelectronic applications or energy harvesting devices like super capacitors.

Facile synthesis of preformed mixed nano-carbon structure from low rank coal

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Facile synthesis of preformed mixed nano-carbon structure from low rank coal"}

Coal is a natural energy resource which is mainly used for energy production via combustion. Coal has nanocrystals embedded in it, formed during the...

Facile synthesis of preformed mixed nano-carbon structure from low rank coal

Published Online: May 18, 2018

Page range: 14 - 20

Received: Oct 28, 2016

Accepted: Feb 16, 2018

DOI: https://doi.org/10.1515/msp-2018-0026

Keywords
tertiary coal, Gondwana coal, carbon nanodots, graphene layers, quantum dots, nano-diamonds, mixed structure

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Facile synthesis of preformed mixed nano-carbon structure from low rank coal

Published Online: May 18, 2018

Page range: 14 - 20

Received: Oct 28, 2016

Accepted: Feb 16, 2018

DOI: https://doi.org/10.1515/msp-2018-0026

Keywordstertiary coal, Gondwana coal, carbon nanodots, graphene layers, quantum dots, nano-diamonds, mixed structure

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
tertiary coal, Gondwana coal, carbon nanodots, graphene layers, quantum dots, nano-diamonds, mixed structure