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Eco-friendly synthesis and catalytic application of chitosan/gold/carbon nanotube nanocomposite films

机译：壳聚糖/金/碳纳米管纳米复合膜的环保合成及催化应用

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Novel eco-friendly chitosan nanocomposite membranes containing gold nanoparticles and carbon nanotubes (CNTs) have been synthesized. The catalytic activity of the nanocomposites was explored using a model reduction reaction of 4-nitrophenol to 4-aminophenol. Kinetic studies demonstrated that the presence of CNTs increased the rate of the reaction, mainly by reducing the induction time. TEM images confirmed the uniform distribution of gold and CNTs in the chitosan matrices. Scanning electron microscopy micrographs revealed that the inclusion of CNTs led to a more compact and less porous network structure which improved the mechanical properties of the films. Catalytically active membranes prepared from the nanocomposites could be reused at least ten times with no loss of mechanical integrity or catalytic effect, opening up the possibility of using this new, environmentally-friendly catalyst support in a continuous flow system.
机译：已经合成了含有金纳米颗粒和碳纳米管（CNT）的新型环保壳聚糖纳米复合膜。使用4-硝基苯酚至4-氨基酚的模型还原反应探索纳米复合材料的催化活性。动力学研究表明，CNT的存在增加了反应的速率，主要通过降低诱导时间。 TEM图像确认了壳聚糖基质中的金和CNT均匀分布。扫描电子显微镜显微照片显示，包含CNT导致更紧凑且较少的多孔网络结构，其改善了薄膜的机械性能。由纳米复合材料制备的催化活性膜可以在不损失机械完整性或催化作用的情况下重复使用至少十倍，在连续流动系统中使用这种新的环保型催化剂载体的可能性。

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