Cu-modified titanate nanotubes (Cu/TNTs) with antibacterial properties were fabricated by a photodeposition approach under two different reaction atmosphere conditions (inert and ambient). Three Cu salts were used as modifying agents: copper(II) acetate, copper(II) sulfate and copper(II) chloride. The physicochemical characterization revealed the occurrence of superfine Cu-based nanoparticles dispersed onto the TNTs modified with copper(II) acetate only. In case of that precursor the highest Cu loading was also obtained. The reaction atmosphere did not affect significantly the amount of Cu deposited onto TNTs; however, it influenced the ratio of Cu(I):Cu(II). That resulted in a higher stability of the samples obtained in the presence of air compared to those obtained under inert conditions, as was found on a basis of Cu release. The antibacterial properties of the Cu/TNTs were investigated against both Gram-positive and Gram-negative bacteria. The hybrid NPs obtained using copper(II) acetate precursor showed the highest bactericidal activity, which was mainly related to the high Cu content in the nanocomposite and the presence of Cu-based NPs.

在两种不同的反应气氛条件下（惰性和环境），通过光沉积法制备了具有抗菌性能的铜改性钛酸酯纳米管（Cu / TNTs）。三种铜盐用作改性剂：乙酸铜（II），硫酸铜（II）和氯化铜（II）。物理化学特征表明，仅在乙酸铜（II）修饰的TNT上分散了超细Cu基纳米颗粒。在该前体的情况下，也获得了最高的Cu负载量。反应气氛不会显着影响沉积在TNT上的Cu的数量；但是，它影响了Cu（I）：Cu（II）的比例。如基于铜释放的结果所示，与在惰性条件下获得的样品相比，这导致在空气存在下获得的样品的稳定性更高。研究了Cu / TNTs对革兰氏阳性和革兰氏阴性细菌的抗菌性能。使用乙酸铜（II）前驱体获得的杂化NPs表现出最高的杀菌活性，这主要与纳米复合材料中的高Cu含量和基于铜的NPs的存在有关。