| Autor: |
Khalil KD; Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.; Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Almunawarah, Yanbu 46423, Saudi Arabia., Riyadh SM; Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.; Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Almunawarah 30002, Saudi Arabia., Alkayal NS; Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia., Bashal AH; Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Almunawarah, Yanbu 46423, Saudi Arabia., Alharbi KH; Department of Chemistry, Science and Arts College, Rabigh Campus, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia., Alharbi W; Department of Chemistry, Science and Arts College, Rabigh Campus, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia. |
| Abstrakt: |
Recently, Strontium oxide (SrO) nanoparticles (NPs) and hybrids outperformed older commercial catalysts in terms of catalytic performance. Herein, we present a microwave-assisted easy in situ solution casting approach for the manufacture of strontium oxide nanoparticles doped within a naturally occurring polymer, chitosan (CS), at varying weight percentages (2.5, 5, 10, 15, and 20 wt.% SrO/chitosan). To construct the new hybrid material as a thin film, the produced nanocomposite solutions were cast in petri dishes. The aim of the research was to synthesize these hybrid nanocomposites, characterize them, and evaluate their catalytic potential in a variety of organic processes. The strontium oxide-chitosan nanocomposites were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM) techniques. All the results confirmed the formation of chitosan-strontium oxide nanocomposite. FTIR spectrum of nanocomposite showed the presence of a characteristic peak of Sr-O bond. Furthermore, XRD revealed that SrO treatment increased the crystallinity of chitosan. The particle size was calculated using the Debye-Scherrer formula, and it was determined to be around 36 nm. The CS-SrO nanocomposite has been proven to be a highly efficient base promoter for the synthesis of 2-hydrazono [1,3,4]thiadiazole derivatives. To optimize the catalytic method, the reaction factors were investigated. The approach has various advantages, including higher reaction yields, shorter reaction durations, and milder reaction conditions, as well as the catalyst's reusability for several applications. |
