Comparative Study of the Structural, Optical and Antibacterial Properties of CaO/ rGO- CaO Nanocomposites | Chapter 03 | Chemistry and Biochemistry: Research Progress Vol. 8

 

Recently, graphene-based materials decorated with metal/metal oxide nanoparticles have gained great interest among researchers owing to their wide range of technological applications. Herein, we have synthesised reduced graphene oxide-calcium oxide nanocomposites (rGO-CaO) by a wet chemical route using a simple one-pot synthesis technique. Graphene oxide was synthesised via modified Hummer’s method and CaO nanoparticles were synthesised using a wet chemical method. Multi-characterisation techniques like X-ray diffractometry (XRD), field emission scanning electron microscopy (FESEM), photoluminescence (PL) spectroscopy and UV-visible spectroscopy were employed to compare the structural and optical properties of CaO and rGO-CaO nanocomposites. Morphological examination revealed the growth of CaO nanoparticles onto the surface of rGO sheets. PL emission intensity of rGO-CaO nanocomposites was found to be greater than that of pure CaO nanoparticles. The antibacterial activity of the prepared samples was compared using Gram-negative E. coli bacteria.

 

Author(s)details:-

 

Rekha S
Department of Physics, Maharaja’s College, Ernakulam, Kerala, 68011, India and Women’s Polytechnic College, Ernakulam, Kerala, 683104, India.

 

Sreeja V G
Department of Physics, St. Teresa’s College (Autonomous), Ernakulam, Kerala, 68011, India.

 

Please see the book here :- https://doi.org/10.9734/bpi/cbrp/v8/6587

Studies on Superparamagnetic Behavior of CoFeO/rGO Nanocomposites at Different Temperatures | Chapter 2 | Challenges and Advances in Chemical Science Vol. 5

The source of magnetism is linked to electron spin and orbital motions, as well as how electrons interact with one another. Magnetic nanoparticles have gotten a lot of attention because of their unique features that set them apart from bulk materials. As a result, they can be employed to create novel materials and gadgets. Superparamagnetism is one of the explicit features of magnetic nanoparticles. Reduced graphene oxide (rGO), for example, is a two-dimensional (2D) nanosheet with unique features such as high mobility, chemical activity, good optical transparency, and a large active surface area. Because of these significant features, this material is an excellent candidate for nanocomposites including magnetic nanoparticles such as cobalt ferrite (CoFe2O4). Nanosheets decorated with CoFe2O4 nanoparticles on rGO will have the required magnetic property, making the nanocomposites promising in a range of domains. The features, general methods of preparation, and some characteristics of CoFe2O4/rGO nanocomposites that can be used in a variety of applications are discussed in this chapter.

Author (S) Details

Amodini Mishra

School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India and Material Science Programme, Indian Institute of Technology Kanpur, Kanpur, U.P.-208016, India.

View Book :- https://stm.bookpi.org/CACS-V5/article/view/3890