The present work reports the synthesis of a ternary nanocomposite GO‐CS‐PPy comprising of graphene oxide (GO), chitosan (CS), and polypyrrole (PPy). The ternary nanocomposite GO‐CS‐PPy was characterized by a variety of techniques like Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction analysis (XRD), thermogravimetric analysis, and differential thermal analysis. The in situ synthesis of ternary nanocomposite GO‐CS‐PPy was carried out in the presence of catalytic FeCl₃. The SEM and TEM analyses reveal a clear transformation of GO into the nanocomposite form where the characteristic sheet‐like structure of the former was crushed and converted into small pieces of nonuniform size. Similarly, in the XRD, the diagnostic peak of GO is also shifted appreciably employing successful synthesis of ternary nanocomposite GO‐CS‐PPy. The thermal stability of the ternary nanocomposite GO‐CS‐PPy was also found to be enhanced as compared to the pristine GO, CS, and PPy individually. The ternary nanocomposite GO‐CS‐PPy was used as an efficient adsorbent for the removal of a popular anionic dye Congo red as well as for the removal of heavy metal ions like Cu²⁺ and Cd²⁺ from water. In both cases, the ternary nanocomposite GO‐CS‐PPy was found to be very effective and can be commercialized in near future after further comprehensive studies.

中文翻译：

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包含氧化石墨烯，壳聚糖和聚吡咯的三元纳米复合材料的合成，表征，形态和吸附研究

本工作报告了由氧化石墨烯（GO），壳聚糖（CS）和聚吡咯（PPy）组成的三元纳米复合GO-CS-PPy的合成。三元纳米复合材料GO‐CS‐PPy具有多种技术特征，如傅立叶变换红外光谱，扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射分析（XRD），热重分析和差热分析分析。在原位合成三元纳米复合GO-CS-聚吡咯的是在催化的FeCl的存在下进行₃。SEM和TEM分析表明，GO明显转变为纳米复合材料形式，其中前者的特征性片状结构被压碎并转化为大小不均匀的小块。同样，在X射线衍射中，通过成功合成三元纳米复合材料GO-CS-PPy，GO的诊断峰也发生了明显变化。与原始的GO，CS和PPy相比，三元纳米复合GO-CS-PPy的热稳定性也得到了提高。三元纳米复合材料GO‐CS‐PPy被用作高效吸附剂，用于去除流行的阴离子染料刚果红，以及用于去除重金属离子，例如Cu ²⁺和Cd ²⁺从水。在这两种情况下，三元纳米复合材料GO-CS-PPy被认为是非常有效的，并且经过进一步的综合研究后可以在不久的将来商业化。