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A Novel Hybrid Organic-Inorganic Nanomaterial: preparation, Characterization and Application in Synthesis of Diverse Heterocycles
Polycyclic Aromatic Compounds ( IF 2.4 ) Pub Date : 2020-06-13 , DOI: 10.1080/10406638.2020.1776346
Zahra Najahi Mohammadizadeh 1 , Mahdia Hamidinasab 1 , Najmieh Ahadi 1 , Mohammad Ali Bodaghifard 1, 2
Affiliation  

Abstract

Immobilization of metal ions on the inorganic supports has found many interesting biological, industrial, and catalysis applications. In this work, a novel organic–inorganic hybrid nanomaterial (nano-Fe3O4@TiO2-Pr-2AB@Cu) using simple chemical co-precipitation method, functionalization and subsequent incorporation of copper ion was prepared. The structure of hybrid nanomaterial was characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), the field emission scanning electron microscopy (FE-SEM), Brunauer-Emmett-Teller (BET) surface area analysis, and inductively coupled plasma-optical emission spectrometry (ICP/OES). Subsequently, the catalytic properties of the prepared hybrid nanostructure were investigated in green synthesis of dihydropyridines, amidoalkylnaphthols, and chromene derivatives. The desired products were identified by FT-IR and nuclear magnetic resonance (NMR) spectroscopies. The catalyst could be recycled for seven reaction runs with slight loss of the catalytic activity and negligible copper (Cu) leaching. Some other advantages of this method are the short reaction time, high yield, easy separation of the catalyst by the external magnetic field, and easy workup procedure.



中文翻译:

一种新型杂化有机-无机纳米材料:制备、表征及其在多种杂环合成中的应用

摘要

在无机载体上固定金属离子已发现许多有趣的生物、工业和催化应用。在这项工作中,一种新型有机-无机杂化纳米材料(nano-Fe 3 O 4 @TiO 2-Pr-2AB@Cu) 使用简单的化学共沉淀法、功能化和随后的铜离子掺入制备。采用傅里叶变换红外光谱(FT-IR)、X射线粉末衍射(XRD)、能量色散X射线光谱(EDS)、热重分析(TGA)、振动样品磁强计(VSM)对杂化纳米材料的结构进行了表征)、场发射扫描电子显微镜 (FE-SEM)、Brunauer-Emmett-Teller (BET) 表面积分析和电感耦合等离子体发射光谱法 (ICP/OES)。随后,研究了制备的杂化纳米结构在二氢吡啶、酰胺基萘酚和色烯衍生物的绿色合成中的催化性能。所需产物通过 FT-IR 和核磁共振 (NMR) 光谱进行鉴定。该催化剂可循环使用七次反应,催化活性略有损失,铜 (Cu) 浸出可忽略不计。该方法的其他一些优点是反应时间短、收率高、催化剂易于通过外部磁场分离以及易于后处理。

更新日期:2020-06-13
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