催化作用
化学
无机化学
煅烧
过电位
绿色化学
纳米颗粒
核化学
材料科学
纳米技术
电化学
有机化学
物理化学
反应机理
电极
作者
R. Thrilokraj,Manesh Kumar,Vishwanath Ankalgi,Shoyebmohamad F. Shaikh,Abdullah M. Al‐Enizi,J.G. Małecki,Umesh A. Kshirsagar,Chandra Sekhar Rout,Ramesh B. Dateer
出处
期刊:Langmuir
[American Chemical Society]
日期:2024-10-15
标识
DOI:10.1021/acs.langmuir.4c03054
摘要
This research work reports the synthesis of copper oxide (CuO) nanoparticles supported on activated carbon by a simple impregnation method using 2-propanol as a green solvent, followed by calcination. The synthesized CuO@C is used as an efficient heterogeneous nanocatalyst for the synthesis of 2H-indazoles and quinazolines utilizing commercially available 2-bromobenzaldehydes, primary amines, and sodium azide under ligand-free and base-free conditions. The present methodology demonstrates the formation of new N–N, C–N, and C═N bonds under one-pot reaction conditions using PEG-400 as a green solvent. The reaction pathways are supported by control experiments and mechanistic elucidation. Further, the synthesized catalyst was characterized by a range of microscopic and spectroscopic techniques such as powdered X-ray diffraction, fourier transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray, UV–vis, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, and BET-BJH analysis. Importantly, the study focused on the recyclability of the catalyst and successfully showed gram-scale production. Significantly, our active catalyst exhibited an outstanding performance in the oxygen evolution reaction, with an overpotential of 290 mV and a swallow Tafel slope of 91 mV dec–1.
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