Synthesis of magnetic nanocomposites and sensitive detection for copper (II) was written by Jiao, Yuan;Liu, Fuyong;Wang, Songbai;Shuang, Shaomin;Dong, Chuan. And the article was included in Yingyong Huaxue in 2017.Recommanded Product: 65-22-5 The following contents are mentioned in the article:
The magnetic nanoparticles (NPs) coated with silica NPs (Fe3O4@SiO2) were prepared by chem. co-precipitation method. A multifunctional magnetic nanocomposite (Fe3O4@SiO2-Pyh) was fabricated by grafting pyridoxal hydrazide (Pyh) to the surface of Fe3O4@SiO2 NPs via hexamethylene diisocyanate. The structure, morphol., and magnetic property of Fe3O4@SiO2-Pyh were characterized by Fourier transform IR spectroscopy, transmission electron microscopy, and X-ray powder diffraction. The Fe3O4@SiO2-Pyh has a clear core shell architecture, in which an average particle diameter is 50-55 nm with about 15 nm SiO2 shell. Fe3O4@SiO2-Pyh contains -CO-NH-N=CH- active groups, which can coordinate with Cu2+ to form stable complex. Based on this principle we established an anal. method for the determination of Cu2+, which was characterized by UV-Vis spectroscopy. The linear range of detecting Cu2+ concentration is 3.4 × 10-7-4.5 × 10-6 mol/L with detection limit 1.03 × 10-7 mol/L. Moreover, the nanocomposites display superparamagnetic properties, which can be used for effective separation of excess Cu2+ from the liquid phase by applying an external magnetic field. As-synthesized Fe3O4@SiO2-Pyh can be a good candidate for selective detection and simple removal of Cu2+ in environmental fields. This study involved multiple reactions and reactants, such as 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5Recommanded Product: 65-22-5).
3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Recommanded Product: 65-22-5
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts