In this study, the surface chemistry and morphology and the photocatalytic and antibacterial potential of pure and chlorine (Cl)-doped indium sulfide (In₂S₃) thin films, produced by spray pyrolysis, were analyzed. The root-mean-square roughness seemed not to be affected significantly by the chlorine concentration in three of the doped films (around 12 nm). The roughness seemed not to affect the characteristics of the films analyzed in this study. The samples presented a photocatalytic efficiency higher than 80%, but no correlation with the chlorine concentration was found. The antibacterial potential of the films was assessed against the multidrug-resistant bacteria Pseudomonas aeruginosa, responsible for serious infections, which are extremely difficult to treat in hospitals. The obtained results evidence an increase in antibacterial activity with the increase in chlorine concentration. These results encourage further studies to support the potential of this material to be used in biomedical applications.

中文翻译：

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氯掺杂对喷涂In2S3薄膜光催化和抗菌活性的影响

_{在本研究中，分析了通过喷雾热解制备的纯硫化铟和掺氯（Cl）硫化铟（In 2} S ₃）薄膜的表面化学和形貌以及光催化和抗菌潜力。三个掺杂薄膜（约 12 nm）中的氯浓度似乎并未显着影响均方根粗糙度。粗糙度似乎不会影响本研究中分析的薄膜的特性。样品的光催化效率高于80%，但没有发现与氯浓度的相关性。评估了薄膜对多重耐药细菌铜绿假单胞菌的抗菌潜力，导致严重感染，而这些感染在医院中极难治疗。获得的结果证明抗菌活性随着氯浓度的增加而增加。这些结果鼓励进一步研究以支持这种材料在生物医学应用中的潜力。