Herein, this work ultrathin CuO nanosheets were synthesized by simple microwave-assisted route. The CuO nanosheets were further fabricated with polyaniline (Pani) by oxidative polymerization methodology in the presence of citric acid and potassium persulphate to finally get Pani@CuO nanocomposite. Thus, prepared CuO nanosheets, Pani and Pani@CuO nanocomposite were characterized by scanning electron microscopy, transmission electron microscopy for the morphological and X-ray diffraction (XRD) for the structural analysis. The morphological study by SEM showed ultrathin sheets of thickness < 10 nm and the dimensions of several nanometers ranging from ~ 200 to 600 nm. The Pani@CuO nanocomposite showed Pani covering the CuO sheets as well as bulk Pani deposited at different places on CuO. The addition of CuO resulted in non-observance of the tubular structure of Pani, thereby suggesting a strong interaction between Pani and CuO. The XRD analysis also showed the presence of peaks corresponding to Pani and CuO, which also indicates the successful formation of the Pani@CuO nanocomposite. The DC electrical conductivity retention studies by isothermal and cyclic aging studies showed much higher conductivity and stability under aging conditions for Pani@CuO which might be due to the stabilization as well as an increase in the mobility of charge carriers due to CuO. Additionally, we found that composite material Pani@CuO nanosheet has significant antimicrobial property against the medically important pathogen, i.e., Bacillus subtilis and Pseudomonas aeruginosa. Contact killing of the pathogens in the presence of composite material was confirmed by scanning electron microscopy and growth parameter. Overall, the synthesized composite material of Pani@CuO might be used for medical device and instrument preparation.

中文翻译：

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微波辅助超薄CuO @聚苯胺复合材料的直流电导率保持率和抗菌特性

在此，通过简单的微波辅助途径合成了该超薄CuO纳米片。在柠檬酸和过硫酸钾存在下，通过聚苯胺（Pani）的氧化聚合方法进一步制备了CuO纳米片，最终得到了Pani @ CuO纳米复合材料。因此，制备的CuO纳米片，Pani和Pani @ CuO纳米复合材料通过扫描电子显微镜，透射电子显微镜进行形态学表征和X射线衍射（XRD）进行结构分析。通过SEM进行的形态学研究表明，厚度小于10 nm的超薄片材的尺寸在200到600 nm之间。Pani @ CuO纳米复合材料显示Pani覆盖了CuO片以及堆积在CuO上不同位置的块状Pani。CuO的添加导致未观察到Pani的管状结构，从而表明Pani与CuO之间的强相互作用。XRD分析还表明存在对应于Pani和CuO的峰，这也表明Pani @ CuO纳米复合材料的成功形成。通过等温和循环老化研究进行的直流电导率保留研究表明，在老化条件下，Pani @ CuO的电导率和稳定性要高得多，这可能是由于CuO的稳定性以及电荷载流子迁移率的提高。此外，我们发现复合材料Pani @ CuO纳米片对医学上重要的病原体具有显着的抗菌性能，即 XRD分析还表明存在对应于Pani和CuO的峰，这也表明Pani @ CuO纳米复合材料的成功形成。通过等温和循环老化研究进行的直流电导率保留研究表明，在老化条件下，Pani @ CuO的电导率和稳定性要高得多，这可能是由于CuO的稳定性以及电荷载流子迁移率的提高。此外，我们发现复合材料Pani @ CuO纳米片对医学上重要的病原体具有显着的抗菌性能，即 XRD分析还表明存在对应于Pani和CuO的峰，这也表明Pani @ CuO纳米复合材料的成功形成。通过等温和循环老化研究进行的直流电导率保留研究表明，在老化条件下，Pani @ CuO的电导率和稳定性要高得多，这可能是由于CuO的稳定性以及电荷载流子迁移率的提高。此外，我们发现复合材料Pani @ CuO纳米片对医学上重要的病原体具有显着的抗菌性能，即 通过等温和循环老化研究进行的直流电导率保留研究表明，在老化条件下，Pani @ CuO的电导率和稳定性要高得多，这可能是由于CuO的稳定性以及电荷载流子迁移率的提高。此外，我们发现复合材料Pani @ CuO纳米片对医学上重要的病原体具有显着的抗菌性能，即 通过等温和循环老化研究进行的直流电导率保留研究表明，在老化条件下，Pani @ CuO的电导率和稳定性要高得多，这可能是由于CuO的稳定性以及电荷载流子迁移率的提高。此外，我们发现复合材料Pani @ CuO纳米片对医学上重要的病原体具有显着的抗菌性能，即枯草芽孢杆菌和铜绿假单胞菌。通过扫描电子显微镜和生长参数证实在复合材料存在下接触杀灭病原体。总体而言，Pani @ CuO的合成复合材料可用于医疗器械和仪器的制备。