Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
Carbohydr Polym. 2017 Oct 1;173:676-689. doi: 10.1016/j.carbpol.2017.05.074. Epub 2017 Jun 4.
In this report, we prepared chitosan (CS) membrane, CS/zinc phthalocyanine (ZnPc-CS) composite fibers and pellets as support for the synthesis of zero valent metal nanoparticles. The composite fibers and pellets of ZnPc-CS were prepared by simply dispersing 5wt% of ZnPc in CS solution. ZnPc-CS composite were applied as economical host material for the development of metallic and bimetallic zero valent nanoparticles. The composites of ZnPc-CS were put in 0.1M metals salt solutions (mono- and bi-metallic) for the adsorption of metal ions. The metal ions adsorbed ZnPc-CS fibers were treated with 0.1M sodium borohydride (NaBH aqueous solution for conversion of metal ions into nanoparticles. Thus, through water based in-situ preparation process, metals nanoparticles loaded on ZnPc-CS composite fibers and pellets were achieved. The presence of respective metals nanoparticles on the composite fibers was confirmed using FE-SEM, XRD and FTIR. Moreover, we determined that these composites exhibit excellent catalytic efficiency and recyclability in the reduction reactions of 4-nitrophenol (4-NP), methyl orange (MO) and cango red (CR). In addition, these composites displayed high antibacterial activity as tested against pathogenic bacteria Escherichia coli.
在本报告中，我们制备了壳聚糖（CS）膜、CS/锌酞菁（ZnPc-CS）复合纤维和小球作为零价金属纳米粒子合成的支撑物。通过简单地将 5wt%的 ZnPc 分散在 CS 溶液中，制备了 ZnPc-CS 复合纤维和小球。ZnPc-CS 复合材料被用作经济型的宿主材料，用于开发金属和双金属零价纳米粒子。将 ZnPc-CS 复合材料放入 0.1M 金属盐溶液（单金属和双金属）中，以吸附金属离子。吸附了金属离子的 ZnPc-CS 纤维用 0.1M 硼氢化钠（NaBH4）水溶液处理，将金属离子转化为纳米粒子。因此，通过基于水的原位制备过程，实现了负载在 ZnPc-CS 复合纤维和小球上的金属纳米粒子。使用 FE-SEM、XRD 和 FTIR 证实了复合纤维上存在各自的金属纳米粒子。此外，我们确定这些复合材料在 4-硝基苯酚（4-NP）、甲基橙（MO）和刚果红（CR）的还原反应中表现出优异的催化效率和可循环性。此外，这些复合材料对大肠杆菌等致病菌表现出高的抗菌活性。
