The daily life of people in the intelligent age is inseparable from electronic device,and a number of bac-teria on touch screens are increasingly threatening the health of users.Herein,a photocatalytic TiO2/Ag thin film was synthesized on a glass by atomic layer deposition and subsequent in situ reduction.Ultraviolet-visible(UV-Vis)spectra showed that this film can harvest the simulated solar light more efficiently than that of pristine TiO2.The antibacterial tests in vitro showed that the antibacterial efficiency of the TiO2/Ag film against S.aureus and E.coli was 98.2％and 98.6％,under visible light irradiation for 5 min.The underlying mechanism was that the in-situ reduction of Ag on the surface of TiO2 reduced the bandgap of TiO2 from 3.44 to 2.61 eV due to the formation of Schottky heterojunction at the interface between TiO2 and Ag.Thus,TiO2/Ag can generate more reactive oxygen species for bacterial inactivation on the surface of elec-tronic screens.More importantly,the TiO2/Ag film had great biocompatibility with/without light irradiation.The platform not only provides a more convenient choice for the traditional antibacterial mode but also has limitless possibilities for application in the field of billions of touch screens.

Peng-Fei Cai;Jun Li;Xin-Bao Wu;Zhao-Yang Li;Jie Shen;Jing-Jun Nie;Zhen-Duo Cui;Da-Fu Chen;Yan-Qin Liang;Sheng-Li Zhu;Shui-Lin Wu

School of Materials Science&Engineering,The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China,Tianjin University,Tianjin 300072,China;Department of Orthopedic Trauma,Beijing Jishuitan Hospital,Beijing 100035,China;Shenzhen Key Laboratory of Spine Surgery,Department of Spine Surgery,Peking University Shenzhen Hospital,Shenzhen 518041,China;Laboratory of Bone Tissue Engineering,Beijing Laboratory of Biomedical Materials,Beijing Research Institute of Orthopaedics and Traumatology,Beijing Jishuitan Hospital,Beijing 100035,China

稀有金属（英文版）

[1]Peng-Fei Cai;Jun Li;Xin-Bao Wu;Zhao-Yang Li;Jie Shen;Jing-Jun Nie;Zhen-Duo Cui;Da-Fu Chen;Yan-Qin Liang;Sheng-Li Zhu;Shui-Lin Wu-.ALD-induced TiO2/Ag nanofilm for rapid surface photodynamic ion sterilization)[J].稀有金属（英文版）,2022(12):4138-4148

limitless

ALD,induced,TiO2,Ag,nanofilm,rapid,surface,photodynamic,sterilization,daily,life,people,intelligent,age,inseparable,from,electronic,device,number,touch,screens,are,increasingly,threatening,health,users,Herein,photocatalytic,thin,was,synthesized,glass,by,atomic,layer,deposition,subsequent,situ,reduction,Ultraviolet,visible,UV,Vis,spectra,showed,that,this,can,harvest,simulated,solar,light,more,efficiently,than,pristine,antibacterial,tests,vitro,efficiency,against,aureus,coli,irradiation,underlying,mechanism,reduced,bandgap,eV,due,formation,Schottky,heterojunction,interface,between,Thus,generate,reactive,oxygen,species,inactivation,More,importantly,had,great,biocompatibility,without,platform,not,only,provides,convenient,choice,traditional,mode,but,also,has,possibilities,application,field,billions

0.585935