編號：NMJS04175
篇名：鐵酸鈷納米粒子:室溫下點擊合成亞芳基巴比妥酸衍生物的高效可磁性分離多相催化劑(英文)
作者：Jaspreet Kaur Rajput； Gagandeep Kaur；
關(guān)鍵詞：Magnetically separable catalyst Arylidene barbituric acid derivative Aqueous ethanol Superparamagnet
機構(gòu)： Department of Chemistry,Dr.B.R.Ambedkar National Institute of Technology；
摘要： A coprecipitation method was used to synthesize superparamagnetic CoFe2O4 nanoparticles without using any capping agents/surfactants. The prepared nanoparticles were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, a vibrating sample magnetometer (VSM), N2 adsorption and thermogravimetric/differential thermal analysis/differential thermal gravimetry techniques. The synthesized spinel CoFe2O4 nanoparticles had an average size of 2-8 nm with a high surface area (140.9 m2/g). The field-dependent magnetization, demonstrated by VSM and saturation magnetization, was found to be 1.77 emu/g. An efficient method was used for the synthesis of arylidene barbituric acid derivatives using CoFe2O4 magnetic nanoparticles as a magnetically separable and reusable catalyst in aqueous ethanol. The attractive features of this synthetic protocol were very short reaction time, high yields, high turnover frequency, simple work-up procedure, economy, a clean reaction methodology, and chemoselectivity, as well as provision of an ecofriendly and green synthesis.
