聚吡咯包裹WO_(3-x)纳米粒子的制备及光动力光热和杀菌性能

Preparation and Photodynamic and Photothermal Bactericidal Properties of Polypyrrole-encapsulated WO_(3-X) Nanoparticle

利用氯化钨和吡咯等原料通过溶剂热法和原位还原制备了聚吡咯包裹的WO_(3-x)纳米粒子。用扫描电镜和红外光谱表征了复合材料,通过单线态氧生成能力、光热测试和体外杀菌实验,对比了聚吡咯包裹前后WO_(3-x)纳米粒子的光动力光热和杀菌性能。结果表明,得到的聚吡咯包裹的WO_(3-x)纳米粒子复合材料在808 nm照射下具有较好的单线态氧生成能力及光热性能。体外杀菌实验证明了其对革兰氏阳性菌和革兰氏阴性菌具有优秀的杀菌性能,对金黄色葡萄球菌和大肠杆菌的杀菌率分别为99.89%和99.71%。

Polypyrrole-encapsulated WO_(3-x) nanoparticles were prepared by solvothermal method and in situ reduction using raw materials such as tungsten chloride and pyrrole.The composites were characterised by scanning electron microscopy and infrared spectroscopy,and the bactericidal properties of polypyrrole-encapsulated WO_(3-x) nanoparticles before and after polypyrrole encapsulation were compared by in vitro bactericidal assay,single-linear oxygen generation capacity and photothermal test.The results show that the obtained polypyrrole-encapsulated WO_(3-x) nanoparticles composites have better single-linear oxygen generation capacity and photothermal performance under 808 nm irradiation.The in vitro bactericidal experiments demonstrated the excellent bactericidal properties against Gram-positive and Gram-negative bacteria,with 99.89%and 99.71%bactericidal rates against Staphylococcus aureus and Escherichia coli,respectively.