The current trends in the green syntheses of titanium oxide nanoparticles and their applications

Abstract

Nanotechnology is a new star in the science horizon with many valuable applications and promises to offer. It includes the synthesis and utilization of nanostructure materials ranging from 1 to 100 nm. Mostly these materials are generally (or "could be") produced via the laborious and hazard-prone physical and chemical methods but the green synthesis approaches easier, safe and scalable have been recently developed. Among other metal oxides nanoparticles, Titanium oxide (TiO 2) nanoparticles have been mostly exploited for their photocatalytic, antimicrobial and antiparasitic applications. A diverse set of biological entities are used to reduce the precursor metal salt into respective nanoparticles. The secondary metabolites present in organisms such as plants or microbes are involved in the bio-reduction and capping processes. This article will provide an overview of the green synthesis of TiO 2 NPs from different biological extracts such as plants, microbes and biological products as well as their potential applications.

<p>Green Synthesis of Cerium Oxide Nanoparticles (CeO₂ NPs) and Their Antimicrobial Applications: A Review</p>

“…5 However, both methods require toxic solvents, high temperature, and pressure, which pose threats to the environment. 23,25 Moreover, higher cost, laborious downstream processing, lesser biocompatibility, instability, and low yield make them further inefficient. 7,10 There is a growing need to fabricate nanostructures which have the potential to solve these problems.…”

Facile synthesis of CdS Quantum dots for QDSSC with high photo current density

“…The resultant final solution was yellowish in color with greenish tint. As obtained precipitate was centrifuged at 10000 rpm for 10 min and washed with deionized water for three times [18,19,22]. Finally, the obtained product was lyophilized for further characterization studies.…”

“…Better control of nanomaterial toxicity can be done by the safe design of nanoparticles using greener research approach. Consequently, green chemistry-mediated synthesis of QDs is profoundly imperative to reduce its toxicity and extend its applications [12][13][14][15][16][17][18][19][20][21][22].…”

Antimicrobial Effect of Titanium Dioxide Nanoparticles

“…It is well known that the hydroxyl and carboxylic groups present in these biocompounds act as stabilizers and reducing agents due to their high antioxidant activity [12]. Thus, plant extracts have been studied as one of the best green alternatives for metal oxide nanoparticles synthesis [27]. In recent years, TiO 2 nanoparticles have been obtained by using different plant extracts, but not all of them have been studied for their antimicrobial activity.…”