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Eco-synthesis route: Developing bis-hydrazono[1,2,4]-thiadiazoles via a green synthetic approach with calcium oxide-chitosan nanocomposite.
Alshaye, Najla A; Riyadh, Sayed M; Khalil, Khaled D; Alharbi, Nuha S; Ahmed, Hoda A.
Afiliación
  • Alshaye NA; Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia. Electronic address: naalshaye@pnu.edu.sa.
  • Riyadh SM; Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt. Electronic address: riyadh1993@hotmail.com.
  • 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. Electronic address: khaledkhalil@cu.edu.eg.
  • Alharbi NS; Chemistry Department, College of Science, Taibah University, Medina 30002, Saudi Arabia. Electronic address: nssharbi@taibahu.edu.sa.
  • Ahmed HA; Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Almunawarah, Yanbu 46423, Saudi Arabia. Electronic address: hmahmoud@taibhu.edu.sa.
Int J Biol Macromol ; 273(Pt 2): 132815, 2024 Jul.
Article en En | MEDLINE | ID: mdl-38825279
ABSTRACT
Modern environmental organic chemistry is focused on developing cost-efficient, versatile, environmentally acceptable catalytic chemicals that are also highly effective. Herein, hybrid calcium-chitosan nanocomposite films was prepared by doping calcium oxide molecules into a chitosan matrix at weight percentage (15, 20, and 25 % wt. chitosan­calcium) using an easy and affordable simple co-precipitation process. The CS-CaO nanocomposite's structure was elucidated using analytical techniques such as Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). Based on the X ray diffraction (XRD) measurements, the crystallinity was reduced by the incorporation of the CaO molecules. Also, from the calculation of the Debye-Scherrer equation on this X-ray diffraction (XRD) pattern, the crystallite size was found to be 17.2 nm for the nanocomposite film with 20 % wt. The energy dispersive spectroscopy graph demonstrated the presence of the distinctive Ca element signals within the chitosan, with the amount in a sample of 20 % wt. being discovered to be 21.32 % wt. For the synthesis of bis-hydrazono[1,2,4]thiadiazoles, the obtained CS-CaO nanocomposite could be employed as a potent heterogeneous recyclable catalyst. Better reaction yields, quicker reactions, softer reaction conditions, and green reusable efficient biocatalysts for several uses are just a few advantages of this approach.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Óxidos / Compuestos de Calcio / Quitosano / Nanocompuestos / Tecnología Química Verde Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Óxidos / Compuestos de Calcio / Quitosano / Nanocompuestos / Tecnología Química Verde Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article