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Catalytic performance of Cu(II)-supported graphene quantum dots modified NiFe 2 O 4 as a proficient nano-catalyst in the synthesis of 1,2,3-triazoles
Monatshefte für Chemie - Chemical Monthly ( IF 1.8 ) Pub Date : 2020-06-26 , DOI: 10.1007/s00706-020-02652-z
Razieh Deilam , Farid Moeinpour , Fatemeh S. Mohseni-Shahri

Abstract

NiFe2O4 nanoparticles are modified by graphene quantum dots (GQDs) and utilized to stabilize the Cu(II) nanoparticles as a novel magnetically retrievable catalytic system (Cu(II)/GQDs/NiFe2O4) for green formation of 1,4-disubstituted 1,2,3-triazoles by means of alkyne–aryl azide cycloaddition. The prepared catalyst can be isolated assisted by an outer magnet and recovered for five courses without significant reduction in its efficiency. The as-prepared magnetic heterogeneous nanocomposite was characterized by UV–Vis, FT-IR, XRD, EDS, VSM, TEM, and ICP. Performing the reactions in environmentally friendly and affordable conditions (water), the low catalyst percentage, high yield of products, short reaction times, and easy workup are the merits of this protocol.

Graphic abstract



中文翻译:

Cu(II)负载的石墨烯量子点修饰的NiFe 2 O 4作为一种高效的纳米催化剂合成1,2,3-三唑的催化性能

摘要

NiFe 2 O 4纳米颗粒通过石墨烯量子点(GQDs)改性,并用于稳定Cu(II)纳米颗粒,作为一种新型的可磁回收的催化体系(Cu(II)/ GQDs / NiFe 2 O 4)通过炔-芳基叠氮化物环加成反应绿色形成1,4-二取代的1,2,3-三唑。所制得的催化剂可以在外磁体的辅助下进行分离,并回收五个过程,而不会明显降低其效率。所制备的磁性异质纳米复合材料的特征在于:UV-Vis,FT-IR,XRD,EDS,VSM,TEM和ICP。在环保和负担得起的条件下(水)进行反应,低催化剂百分率,高收率的产品,较短的反应时间和容易的后处理是该方案的优点。

图形摘要

更新日期:2020-06-26
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