Enhanced photoelectrochemical cathodic protection performance of MoS_(2)/TiO_(2)nanocomposites for 304 stainless steel under visible light  

作　　者：Xiumin Ma Zheng Ma Dongzhu Lu Quantong Jiang Leilei Li Tong Liao Baorong Hou 

机构地区：[1]CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Science,Qingdao,266071,China [2]Institute of Marine Science and Technology,Shandong University,Qingdao,266237,China [3]Open Studio for Marine Corrosion and Protection,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao,266237,China [4]Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao,266071,China

出　　处：《Journal of Materials Science & Technology》2021年第5期21-28,共8页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.41827805);Chinese Academy of Engineering(No.2019-XZ-21)。

摘　　要：In this work,TiO_(2)nanotube arrays(NTAs)sensitized with MoS_(2)microspheres(MoS_(2)/TiO_(2)nanocomposites)were prepared on a flat Ti substrate via two-step anodization and hydrothermal method sequentially.TiO_(2)NTAs were composed of many orderly nanotubes,whose large specific surface area was favorable for light absorption and MoS_(2)microsphere adhesion.The MoS_(2)microsphere as a narrow band gap semiconductor extended the TiO_(2)NTAs’absorption band edge to the visible region.The 2D structure of MoS_(2)microspheres and the construction of heterojunction electronic field at the interface of MoS_(2)microspheres and TiO_(2)NTAs promoted the separation of photoinduced carriers.The MoS_(2)/TiO_(2)nanocomposites could provide higher photoelectrochemical cathodic protection for 304 stainless steel(304 SS)under visible light than pristine TiO_(2)NTAs.

关 键 词：ANTI-CORROSION TiO_(2)nanotube array MoS_(2)microspheres Photoelectrochemical cathodic protection Visible light 

分 类 号：TB33[一般工业技术—材料科学与工程] TG178[金属学及工艺—金属表面处理]