• Gaurav Pandey
• Vinay Kumar Varshney
• Mandeep Kumar

Due to their unique properties, titanium dioxide nanoparticles (TiO₂ NPs) have been widely used in many fields, such as the medical, electrical, chemical, and membrane industries. The self-cleaning property, photocatalytic effect, appropriate band gap, high antibacterial performance, and remarkable physical and chemical stability contribute to this great potential. However, the conventional chemical synthesis of TiO₂ NPs employs toxic reducing agents which cause environmental and health problems. Recent investigations, however, have tended to lean towards biosynthesis employing plant-based extracts containing high levels of natural biomolecules including polyphenols. These complexes not only function as a reducing agent for titanium precursors but can also act as capping and produce NPs with different morphologies, sizes and greater surface reactivity. Green synthesis is increasingly used as an efficient, cost-effective, and eco-friendly technology. This review is aimed to discuss the biosynthesis of TiO₂ NPs, based on plant extracts, focusing on experimental conditions and the immense plant diversity available for the synthesis of such NPs. The article also discusses the physico-chemical characteristics of resultant NPs, rendering them suitable for numerous applications (biomedical applications in particular) due to their biocompatibility and functional uses. The results are expected to stimulate further studies on green nanotechnology and to design new synthesis methods for safe and multifunctional nanomaterials.

Green Synthesis, Titanium Dioxide NPs, Plant Extracts, Nanoparticle Characterization, Phytochemical Reduction, Biomedical Applications

"Plant-Mediated Green Synthesis of Titanium Dioxide Nanoparticles: Mechanisms, Characterization Strategies, and Emerging Applications in Sustainable Nanotechnology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 12, page no.183-191, December-2020, Available :http://www.jetir.org/papers/JETIR2012427.pdf

"Plant-Mediated Green Synthesis of Titanium Dioxide Nanoparticles: Mechanisms, Characterization Strategies, and Emerging Applications in Sustainable Nanotechnology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 12, page no. pp183-191, December-2020, Available at : http://www.jetir.org/papers/JETIR2012427.pdf