Structural, Optical, Morphological and Microbial Studies on SnO₂ Nanoparticles Prepared by Co-Precipitation Method

Abstract

Nanoparticles of tin oxide (SnO2) powders were prepared by co-precipitation method at 500 °C, 700 °C and 900 °C temperature. The sintered SnO2 nanoparticles, structural, optical, magnetic, morphological properties and microbial activity have been studied. XRD studies reveals that sintered powder which exhibits tetragonal crystal structure and both crystallinity as well as crystal size increase with increase in temperature. The morphological studies reveal randomly arranged grains with compact nature grain size increases with sintering temperature. The compositional analyses of SnO2 nanoparticles have been studied using X-ray photoelectron spectroscopy analysis. The optical band gap values of SnO2 nanoparticles were calculated to be about 4.3 eV in the temperature 500 °C, comparing with that of the bulk SnO2 3.78 eV, by optical absorption measurement. Room temperature M-H curve for pure SnO2 nanoparticles exhibits ferromagnetic behaviour. The tin oxide nanoparticles are acted as potential candidate material for bacterial and fungal activity.

Green synthesis of SnO2 nanoparticles using Delonix elata leaf extract: Evaluation of its structural, optical, morphological and photocatalytic properties

“…Different methods have been worn for the synthesis of SnO 2 nanoparticles, such as sol-gel [19], hydrothermal [20], co-precipitation [21], Microwave-assisted methods [22], spray pyrolysis [23]. But the green synthesis of nanoparticles has more attention compared with the aforementioned methods.…”

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

“…Given the above points, SnO 2 nanomaterials can be used with positive effect in a range of applications [ 14 , 15 , 16 ], with the pellucidity shown in the observable solar spectrum having been utilized in optoelectronic devices such as solar photovoltaics [ 17 , 18 , 19 ]. Other attributes of the SnO 2 nanostructure have been utilized for diodes, gas sensors, catalysis, antibacterial activities, and biomedical purposes [ 12 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ].…”

“…SnO 2 nanostructure preparation can be achieved using several different techniques. These include the co-precipitation [ 26 ], sol-gel [ 28 , 29 ], solvothermal decomposition [ 30 , 31 ], microwave hydrothermal synthesis [ 32 , 33 ] and precipitation [ 34 ], techniques, as well as hydrothermal synthesis [ 35 , 36 ], and the polyol [ 37 ], solvothermal [ 38 ], and by microwave [ 39 , 40 , 41 ] methods. However, issues related to the complexity of the synthetic process, including the creation of effluent by-product, reagent toxicity, and longer reaction times, have made industrial SnO 2 nanopowder generation difficult to achieve, with the creation of a pure powder product having been entirely unachievable through the aforementioned techniques [ 42 ].…”

Effect of organic capping agents on the optical and photocatalytic activity of mesoporous TiO2 nanoparticles by sol–gel method

“…The PL emission is observed at 438, 485 (blue emission), 510 and 527 (green emission) at room temperature. The strong peak at 485 nm corresponding to the blue emission, due to electron transitions intermediary by the vacancy levels in the band gap and oxygen defects [32,33] formed during sample annealing at high temperature. The sample annealed at high-temperature structural defects, which generally act as the deep defect donors in semiconductor metal oxide that pitch into the optical emissions.…”