Journal
POLYMERS
Volume 14, Issue 16, Pages -Publisher
MDPI
DOI: 10.3390/polym14163347
Keywords
chitosan; calcium oxide nanoparticles; thiazoles; heterogeneous catalysis
Categories
Funding
- KIT-Publication Fund of the Karlsruhe Institute of Technology
- Science and Technology Commission of Shanghai Municipality [19440741300]
- DFG [2082/1-390761711]
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Calcium oxide (CaO) nanoparticles have attracted much interest due to their catalytic activity. In this research, a chitosan-calcium oxide nanocomposite was synthesized under microwave irradiation. The nanocomposite showed good catalytic performance in thiazole production, with high yields and mild reaction conditions.
Calcium oxide (CaO) nanoparticles have recently gained much interest in recent research due to their remarkable catalytic activity in various chemical transformations. In this article, a chitosan calcium oxide nanocomposite was created by the solution casting method under microwave irradiation. The microwave power and heating time were adjusted to 400 watts for 3 min. As it suppresses particle aggregation, the chitosan (CS) biopolymer acted as a metal oxide stabilizer. In this study, we aimed to synthesize, characterize, and investigate the catalytic potency of chitosan-calcium oxide hybrid nanocomposites in several organic transformations. The produced CS-CaO nanocomposite was analyzed by applying different analytical techniques, including Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field-emission scanning electron microscopy (FESEM). In addition, the calcium content of the nanocomposite film was measured using energy-dispersive X-ray spectroscopy (EDS). Fortunately, the CS-CaO nanocomposite (15 wt%) was demonstrated to be a good heterogeneous base promoter for high-yield thiazole production. Various reaction factors were studied to maximize the conditions of the catalytic technique. High reaction yields, fast reaction times, and mild reaction conditions are all advantages of the used protocol, as is the reusability of the catalyst; it was reused multiple times without a significant loss of potency.
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