The development in nanotechnology, specifically the nanoparticulate
system, has a great impact on medicine, engineering and other scientific areas.
Inorganic nanoparticles such as silver, gold, zinc oxide, selenium, iron, lead, platinum
and copper, etc. were found to exhibit antimicrobial, antioxidant and other biological
activities, used as biosensors and also used in different fields of engineering. In the 21st
century, microorganisms and plant parts are playing a major role in the synthesis of
inorganic nanoparticles. Green synthesis of inorganic nanoparticles becomes preferable
to other approaches because of its eco-friendly and non-toxic approach. Additionally,
the active molecules of plants (Tannins, flavonoids, terpenoids, saponins, proteins and
glycosides) which act as capping and reducing agents in the synthesis of metal
nanoparticles could make them most suitable for biomedical applications. This green
approach fascinated researchers across the globe to explore the potential of different
microorganisms and plants in the synthesis of inorganic nanoparticles. Selenium
nanoparticles are one of the inorganic nanoparticles which are widely used in the area
of medicine and engineering. In this chapter, we discussed the green synthesis using
microorganism and Agri based products, characterisation and various applications of
selenium nanoparticles.
Keywords: Applications, Characterisation, Green synthesis, Nanoparticles, Selenium.