Barium Carbonate (BaCO3) Nanoparticles
Barium carbonate (known as witherite) nanoparticles are regarded as important chemical agents used in manufacturing optical glasses, pigments, ceramic, magnetic ferrites, ferroelectric materials, piezoelectrics and electric condensers. They go in different morphologies as flower-like, nest-like, needle-like and rod-like crystals. Barium carbonate nanoparticles are thermodynamically stable crystals among heavy metal carbonates. They have found applications in numerous industries namely. Various chemical and physical methods have been suggested for the synthesis of barium carbonate nanoparticles that comprise chemical co-precipitation, solid state decomposition, spray pyrolysis, microemulsion-mediated solvothermal, sonochemical, microwave-assisted, semi batch crystallizer, reversed micelles, microemulsion-based electro-deposition and self-organized formation techniques. In addition to these methods, there are potentially environmentally friendly and biological methods that follow the green chemistry guidelines and protocols. The green synthesized barium nanoparticles are practically suitable to be used in medical field as the particle surface in this method lacks any toxic reducing agents. The advantages of green synthesis method are the preparation is inexpensive the resulting product isn’t toxic and lack any hazardous chemicals.