آتنا نعیمی

Nanocomposite (NC) materials have gained much attention and interest of scientists in recent years because of their improved properties than the single metal nanoparticles. Nanocomposite is a combination or matrix, in which different materials combine to develop new properties of the materials ensuring that one of the materials have size in range of 1-100nm. There are hence two parts on NC i.e. continuous phase and discontinuous reinforcing phase. Nanocomposite can be prepared from any combination of materials that can be categorized into three basic building blocks i.e. metals, ceramics and polymers [1].The nanocomposite can have a combination or have markedly different mechanical, electrochemical, electrical, catalytic, thermal and optical properties from the component materials [1, 2]. Further, these NC have emerged as materials of 21st century that offer number of technological and business breakthroughs in all the sectors of life. In this work, Ni/ NiO nanocomposite was synthesized using Calotropis procera plant. For this aim, at first, 5 ml distilled water was added to 0.085 g of this plant. Then, the solution was refluxed within 10 min, after its pH was changed to 9 using KOH (0.001 M). The plant was filtrated and the suspension was kept at refrigerator. NiCl2·6H2O (0.1 mM) was added to the mixture of plant extraction/water (1/2ratio). After 10h, the black resultant was heated at 500 ºC for 2h to produce Ni/NiO nanocomposite