Silica nanoparticle based techniques for extraction, detection, and degradation of pesticides

Silica coating of indium phosphide nanoparticles by a sol–gel method and their photobleaching properties

“…Silica is a promising material for shell production because of the chemical stability in many kinds of solvents and its lower toxicity compared with other materials [18][19][20]. From this viewpoint, several methods for silicacoating particles, such as metallic nanoparticles, metal oxide nanoparticles, polymer nanoparticles, and QDs, are based on a sol-gel process [21][22][23][24][25][26][27][28].…”

Effect of the modified silica on the conductivity and sensory properties of polyaniline nanocomposites

“…The introduction of nanosized fillers into composites with conductive polymers allows them to control the electrical properties of these polymers, their sensitivity and other physical and chemical characteristics (Seo et al, 2017;Konopelnyk et al, 2017;Chethan et al, 2019). With the rapid development of nanotechnology, the silica nanoparticles have attracted much attention of researchers as excellent platforms for development of smart sensing systems for numerous applications in analytical chemistry and bioanalysis, in medical diagnostics and therapy, environmental and food analysis, security (Wang et al, 2008;Ma et al, 2015;Bapat et al, 2016). Silica nanoparticles process a unique set of remarkable properties, which include large ratio of surface area to volume, excellent chemical stability, low cost of synthesis, and low toxicity, especially convenient surface modification (Filonenko et al, 2010;Liberman et al, 2014;Murugadoss et al, 2017).…”

An Ionic Liquid-based Microextraction Method for Ultra-High Preconcentration of Paraquat Traces in Water Samples Prior to HPLC Determination

“…3,5 In addition, a satisfactory recovery in the microextraction of [PQ] 2+ is yet to be achieved, 8 even though this has been attempted by performing the microextraction after the transformation of [PQ] 2+ to 1,1′-dimethyl-4,4′-bipiperidyl (electron neutral molecule) through the reduction of the pyridine rings. 9 Recently, ionic liquids (ILs) have attracted considerable attention as novel extraction solvents in various fields of chemistry, and various IL-based extraction systems [10][11][12][13][14][15][16] have been developed. Although there are several examples in which ILs are utilized as pretreatment agents for aqueous samples in toxicant analyses, [17][18][19][20] comparative investigations of different ILs with regard to their extraction efficiency for toxicant analysis have not been conducted systematically.…”