Titanium dioxide (TiO 2 ) is an attractive biomaterial for its antibacterial properties. In this paper, TiO 2 nanoparticles were co-doped with copper and nitrogen and deposited onto polypropylene (PP) by the dip-coating technique. The nanoparticles were synthesised via the sol-gel technique and co-doped by the wet impregnation method. The physicochemical properties of the samples were characterised using scanning electron microscopy (SEM), wavelength-dispersive spectrometry (WDS), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and ultraviolet-visible (UV–vis) spectroscopy. The band gap energy was determined using a Tauc plot. The antibacterial activity was evaluated against gram-positive, gram-negative, and multi-resistant bacteria by measuring the number of colony-forming units (CFUs). All the tests were conducted in the presence of visible light. The results showed that the nanoparticles have a mean diameter of 20.40 ± 5.50 nm. The Cu–N-dop...

中文翻译：

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掺有Cu–N掺杂的二氧化钛改性的聚丙烯，用于抗菌应用

二氧化钛（TiO 2）具有抗菌特性，是一种有吸引力的生物材料。在本文中，将TiO 2纳米粒子与铜和氮共掺杂，并通过浸涂技术沉积在聚丙烯（PP）上。纳米颗粒通过溶胶-凝胶技术合成，并通过湿法浸渍法共掺杂。使用扫描电子显微镜（SEM），波长色散光谱（WDS），X射线衍射（XRD），X射线光电子能谱（XPS）和紫外可见（UV-vis）对样品的理化性质进行表征光谱学。使用Tauc图确定带隙能量。通过测量菌落形成单位（CFU）的数量来评估对革兰氏阳性，革兰氏阴性和多重耐药菌的抗菌活性。所有测试均在可见光下进行。结果表明，纳米颗粒的平均直径为20.40±5.50nm。铜-氮掺杂...