铁电材料催化抗菌研究进展  

Research progress on ferroelectric catalytic materials for antimicrobials

作　　者：张妍 车俊岭 贾艳敏 ZHANG Yan;CHE Junling;JIA Yanmin(School of Science,Xi’an University of Posts&Telecommunications,Xi’an 710121,China;School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710062,China)

机构地区：[1]西安邮电大学理学院,西安710121 [2]陕西师范大学物理与信息技术学院,西安710062

出　　处：《工程科学学报》2024年第9期1702-1712,共11页Chinese Journal of Engineering

基　　金：国家自然科学基金资助项目(22179108)。

摘　　要：研究和发展抗菌技术对保障人类的生命健康至关重要.铁电材料是具有自发极化,且自发极化能够被外电场所转向的一类材料.在外加场的刺激下,铁电材料内部电偶极子的有序排列被打破,表面的束缚电荷重新分布,被释放的正负电荷与周围介质中的氧气和水发生反应,生成具有强氧化性的活性物质(如·OH,O_(2)^(-))来灭活细菌.结合铁电材料具备良好的压电、热释电及光伏性质,以及响应快(10^(-6) s)、机电耦合系数高的独特优势,与催化技术相结合已发展成为一种新兴的灭菌技术.本综述从铁电材料的压电催化抗菌、热释电催化抗菌及光催化抗菌三个方面,对前人报道的关于铁电材料催化抗菌的工作进行了总结梳理,并分别阐述了铁电材料在不同类型催化过程中的抗菌机制.Research and development of antimicrobial technology are critical for safeguarding human life and health.Ferroelectric materials,materials with spontaneous polarization,can adjust their direction of spontaneous polarization in response to an external electric field.When subjected to this applied field,the ordered arrangement of electric dipoles within the ferroelectric material becomes disrupted.This disruption causes the bound charges on the surface to redistribute,and the released positive and negative charges react with the oxygen and water in the surrounding medium.This reaction forms active substances with powerful oxidant properties(such as OH,O_(2)^(-)).These highly oxidizing active substances can destroy the cell wall of bacterial cells,enter the cell to damage DNA,leak proteins,and render them inactive,thereby inactivating the bacteria.Ferroelectric materials are not only excellent for their piezoelectric,pyroelectric,and photovoltaic properties but also possess the unique ability to convert mechanical,thermal,and optical energy in nature into electrical and chemical energy.Coupled with their fast response speed(10^(-6) s)and high electromechanical coupling coefficients,the development of ferroelectric materials in conjunction with catalytic technology has emerged as a new sterilization technique.However,achieving high antimicrobial efficiencies is closely related to carrier utilization in the catalytic process and the catalyst activity.This holds true regardless of whether mechanical,thermal,or optical energy is used as the driving source to stimulate ferroelectric materials for catalytic antimicrobials.When using ferroelectric materials as catalysts,the spontaneous polarization properties of these materials can be harnessed to reduce the electron–hole pair combination rate through the internal electric field.This action increases the yield of active substances,thereby improving the efficiency of catalytic antibacterial agents.In addition,high-performance ferroelectric materials have a high internal e

关 键 词：铁电材料 抗菌 压电催化 热释电催化 光催化 

分 类 号：O644.1[理学—物理化学]