Senior Research Fellow
Meera joined this research group in July 2016. She received her Bachelors and Masters degree in Chemistry from Sacred Heart College, Thevara, Kerala. Her M.Phil thesis was based on synthesis and characterisation of anatase TiO2 nanoparticles and its photocatalytic applications. Her research interests are concentrated in magnetic nanohybrids for electronic and electromagnetic applications. She is also working on water purification using iron oxide - graphene oxide hybrids and on the development of nanoscrolls from various 2D materials.
Sathyan M., Jayaraj, M. K., John, H., Rolling and unrolling of graphene sheets via in situ generation of superparamagnetic iron oxide nanoparticles, Physical Chemistry Chemical Physics (2019), 21, 16413-16417.
This manuscript reports a novel method for the automatic rolling and unrolling of reduced graphene oxide sheets using in situ generated superparamagnetic iron oxide nanoparticles. The graphene oxide synthesized through a low temperature modified hydrothermal method is subjected to hydrothermal reduction to obtain reduced graphene oxide (rGO). The as-prepared rGO was subjected to a second level of hydrothermal reduction in the presence of in situ generated superparamagnetic iron oxide nanoparticles, which led to the formation of graphene nanoscrolls decorated with superparamagnetic iron oxide nanoparticles. The nanoscrolls are unrolled to produce rGO sheets when the iron oxide nanoparticles are washed with hydrochloric acid. The repeatability of nanoscroll formation was examined by repeating the hydrothermal reaction for the in situ generation of superparamagnetic iron oxide nanoparticles in the presence of opened up rGO sheets. This reaction again made the rGO sheets scrolled. A blank reaction was also carried out without iron oxide particles to confirm the necessity of Fe3O4 in nanoscroll formation.