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Graphene-nanocrystalline metal sulphide composites produced by a one-pot reaction starting from graphite oxide |
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| Authors: | C Nethravathi N Ravishankar M Rajamathi |
| Affiliation: | a Materials Research Group, Department of Chemistry, St. Joseph’s College, 36 Lalbagh Road, Bangalore 560 027, India b Materials Research Center, Indian Institute of Science, Bangalore 560 012, India c Solid State and Structural Chemistry Unit, Indian Institute of science, Bangalore 560 012, Karnataka, India |
| Abstract: | Graphene-nanocrystalline metal sulphide composites were prepared by a one-pot reaction. A dispersion of graphite oxide layers in an aqueous solution of metal ions (Cd2+/Zn2+) was reacted with H2S gas, which acts as a sulphide source as well as a reducing agent, resulting in the formation of metal sulphide nanoparticles and simultaneous reduction of graphite oxide sheets to graphene sheets. The surface defect related emissions shown by free metal sulphide particles are quenched in the composites due to the interaction of the surface of the nanoparticles with graphene sheets. |
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