Nano-scale preparation of Titanium dioxide by Desmodium gangeticum root aqueous extract

Novel microbial and root mediated green synthesis of TiO2 nanoparticles and its application in wastewater remediation

“…Sorghum root extracts are rich in phenolic compounds and previous reports on synthesis of TiO 2 nanoparticles using other root extracts have elucidated that the phenolic compounds present in them play the role of capping as well as reducing agent for the synthesis of TiO 2 nanoparticles. 12,13 For the microbial consortium as well as Micrococcus lylae, Micrococcus aloeverae and Cellulosimicrobium sp. mediated synthesis, the enzyme glucosidase present in the bacterial strains acts as a bioreducing agent.…”

Shape tailored green synthesis of CeO 2 :Ho 3+ nanopowders, its structural, photoluminescence and gamma radiation sensing properties

“…In addition, wet-chemistry routes lead to the existence of some toxic chemicals adsorbed on the surface of the product that may have adverse effects in biomedical application. Therefore, for sustainable progress of nanotechnology, ecofriendly approaches are highly necessary [24][25][26].…”

In vitromagnetic hyperthermia using polyphenol-coated Fe3O4@γFe2O3nanoparticles fromCinnamomun verumandVanilla planifolia: the concert of green synthesis and therapeutic possibilities

“…This wide range of applications has motivated the development of quite a large number of synthesis routes including ion-sputtering (6), sol-gel technique (7), mechano-chemical activation (8), co-precipitation (9), laser ablation (10), hydrothermal (11) and ultrasonic (12). To ensure biocompatibility for biomedical applications, these methods require tedious separation procedures to remove hazardous chemicals at their surface from reactants or byproducts of the synthesis route (13) and thus developing a safe, ecofriendly approach has been a challenge of nanotechnology research (14). In recent years eco-friendly synthesis of metallic nanoparticles has been reported (15,16) based on the use of green materials like biomass, plant extracts or reducing biomolecules, a process known as bio-reduction or biosynthesis (17).…”

“…A list of the metallic nanoparticles obtained by biosynthesis employing plants biomass or extracts are available in reviews, reported by Amit et al (15), Mohanpuria et al (18), Herlekar et al (19) and Quester et al (20). Regarding the synthesis of MNPs, strategies using living plants (14,21,22), dried plant biomass or their extract (14) have been proposed. Compared to biological synthesis (i.e., using fungi, microorganisms, mammalian cells or enzymes) the plants aqueous extracts are advantageous because they do not require elaborate processes for maintaining cell cultures and are easy to scale up (17).…”

“…Previous reports have shown some control on the final sizes and morphologies (spherical, platelets, and nanorods) of MNPs by control within the aqueous extracts (pH, temperature, inert atmosphere, etc.) and, for polyphenols, a key control parameter is concentration during processing (14,17,30).…”