Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Carbohydr Polym. 2017 Feb 10;157:294-302. doi: 10.1016/j.carbpol.2016.09.078. Epub 2016 Sep 26.
Cellulose acetate fibers (CA), and sheets (CA) were prepared by wet-spinning, and doctor blade methods, respectively. For CA, the CA-acetone solution was pushed through narrow orifice of the medical syringe into a coagulating bath containing water. The same polymer solution was used for the fabrication of CA. The prepared CA and CA were dipped in a 0.1M aqueous AgNO solution followed by treatment with 0.1M NaBH aqueous solution to synthesize the Ag nanoparticles over stated substrates. The virgin CA and CA as well as Ag nanoparticles containing samples (Ag/CA and Ag/CA) were characterized by FE-SEM, XRD, FTIR, and TGA. These materials were tested as catalysts in hydrogenation of the 2,6-dinitrophenol (2,6-DNP) by NaBH. The Ag/CA played better catalytic role in the hydrogenation of 2,6-DNP as compared to the Ag/CA. Moreover, the catalyst amount effect on the reaction rate constant, ease of separation and reusability of the prepared materials were discussed.
醋酸纤维素纤维（CA）和薄膜（CA）分别通过湿法纺丝和刮刀成膜方法制备。对于 CA，将 CA-丙酮溶液通过医用注射器的小孔推入含有水的凝固浴中。相同的聚合物溶液用于 CA 的制备。将制备的 CA 和 CA 浸入 0.1M 的 AgNO3 水溶液中，然后用 0.1M 的 NaBH4 水溶液处理，以在上述基底上合成 Ag 纳米粒子。原始的 CA 和 CA 以及含有 Ag 纳米粒子的样品（Ag/CA 和 Ag/CA）通过 FE-SEM、XRD、FTIR 和 TGA 进行了表征。这些材料被用作 NaBH 还原 2,6-二硝基苯酚（2,6-DNP）的催化剂。与 Ag/CA 相比，Ag/CA 在 2,6-DNP 的加氢反应中表现出更好的催化作用。此外，还讨论了催化剂用量对反应速率常数、制备材料的分离和可重复使用性的影响。
