富含氧空位的BaTiO_(3)纳米材料的光热抗菌研究  

Research of BaTiO_(3) Nanomaterial Rich in Oxygen Vacancies for Photothermal Antibacterial

作　　者：王伟杰 陈显春 周大利[1] Wang Weijie;Chen Xianchun;Zhou Dali(Materials Science and Engineering,Sichuan University,Chengdu 610000,China;College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学材料科学与工程学院,四川成都610000 [2]四川大学高分子科学与工程学院,四川成都610000

出　　处：《山东化工》2022年第20期9-12,共4页Shandong Chemical Industry

摘　　要：光热疗法(PTT)作为新兴抗菌方法引起了研究人员的广泛关注,开发高效近红外响应光热剂(PTA)已成为目前研究的热点之一。本研究采用NaBH_(4)热还原工艺制备了富含氧空位的BaTiO_(3)纳米材料。采用X射线衍射仪(XRD)、场发射扫描电子显微镜(SEM)以及热重分析仪等方法对样品的晶体结构、形貌和氧空位进行表征,通过光热实验、CFU平板计数法对样品的光热性能和抗菌性能进行了评价。结果表明:氧空位的引入能显著扩宽BaTiO_(3)的光吸收范围,从而赋予该材料优异的近红外响应光热性能。CFU平板计数法探究BaTiO_(3)-Vo在近红外光照射下抗菌性能的实验结果发现,BTO-Vo具有优异的光热抗菌性能,12 min内对大肠杆菌和短小芽孢杆菌的抗菌率分别达到95%和97%。Photothermal therapy(PTT),as an emerging antibacterial method,has attracted the attention of researchers,and developing high-efficiency photothermal agents(PTA)is one of the research hotspots.The BaTiO_(3) nanomaterial rich in oxygen vacancies was successfully prepared by NaBH_(4) thermal reduction technology.The crystal structure,micromorphology and oxygen vacancies of the samples were characterized by X-ray diffraction(XRD),Scanning electron microscope(SEM)and Thermogravimetric analysis(TGA),respectively.The photothermal performance and antibacterial performance were evaluated by photothermal experiment and CFU plate counting method.The results showed that the oxygen vacancies could significantly broaden the light absorption range of cubic BaTiO_(3),thereby achieving an excellent photothermal performance under the irradiation of near infrared light(NIR).In addition,the antibacterical experiment found that the BTO-Vo had excellent antibacterial properties under NIR irradiation,and the antibacterial rates against E.coil and B.pumilus were as high as 95%and 97%in 12 min,respectively.

关 键 词：BaTiO_(3) 氧空位 光热 抗菌 

分 类 号：TQ110[化学工程—无机化工]