Three-dimensional flexible Au nanoparticles-decorated TiO_(2) nanotube arrays for photoelectrochemical biosensing

作     者：Xidong Zhang Dong Yue Ling Zhang Shiwei Lin Xidong Zhang;Dong Yue;Ling Zhang;Shiwei Lin

作者机构：State Key Laboratory of Marine Resource Utilization in South China SeaSchool of Materials Science and EngineeringHainan UniversityHaikou 570228China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第56卷第21期

页      面：162-169页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 070205[理学-凝聚态物理] 070302[理学-分析化学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 080202[工学-机械电子工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.61764003 and 51462008) the Major Science and Technology Planning Project of Hainan Province(No.ZDKJ201810) 

主　　题：Photoelectrochemical biosensing Metal/semiconductor interface Flexibility TiO_(2)nanotube arrays 

摘      要：Controlling the charge transfer and thus enhancing the excitons’lifetime are the key to the realization of efficient photoelectrochemical(PEC)***,fabrication of flexible and collapsible sensors can greatly facilitate the implementation of smart PEC sensing devices into practical ***,we sagely designed and successfully fabricated three-dimensional flexible Au nanoparticles-decorated TiO_(2) nanotube arrays(Au@TiO2)for the efficient PEC biosensing of *** Schottky barrier derived from the Au@TiO2 heterostructure efficiently separates the charge carriers at the junction interfaces,thus greatly increasing the concentration and lifetime of holes left in the valence band of *** separated holes further evidently generate the active hydroxyl radicals,which can specifically recognize and oxidize *** a result,Au@TiO_(2) exhibits excellent photoelectric activity and selectivity,far superior to TiO_(2) without decorated Au *** addition,such asymmetric Au@TiO_(2) system has been proved to feature the intrinsic flexibility nature,since its PEC biosensing performance is almost unaffected under indirect light irradiation and serious tensile strain.