Li Hong, Yang Zhanyuan, Cui Xingqiang, Li Yanhui, Zhang Pengfei, Li Junru
College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, People's Republic of China.
State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, 308 Ningxia Road, Qingdao 266071, People's Republic of China.
Nanotechnology. 2022 Nov 11;34(4). doi: 10.1088/1361-6528/ac9da8.
A novel InS/AgS/TiOnanotube arrays (NTAs) was successfully fabricated by successive ionic layer adsorption and reaction method and electrochemical anodic oxidation method, and served as photoanode for photocathodic protection application. The micromorphologies, optical absorption properties, crystalline structure and elemental valence states of the composites were performed by field emission scanning electron microscopy, high resolution transmission electron microscope, UV-vis diffuse reflectance absorption spectra, x-ray diffractometer and x-ray photoelectron spectroscopy, respectively. The photocathodic protection performances of InS/AgS/TiONTAs on the Q235 carbon steel (CS) were also studied. The InS/AgS/TiOnanocomposites show better photoelectrocatalytic and photocathodic protection performance than pure TiONTAs. The photocurrent density of InS(9)/AgS(8)/TiOphotoelectrode coupled with Q235 CS reach 211A cm, which is about 4.5 times higher than that of TiONTAs. The photogenerated potential of Q235 CS coupled to InS(9)/AgS(8)/TiOunder illumination shows a negative shift to -0.92 V versus SCE. Results indicate that the co-sensitization of InSand AgS could extend the light absorption of TiOto the visible light range and enhance its photoelectric conversion efficiency.
通过连续离子层吸附反应法和电化学阳极氧化法成功制备了一种新型的InS/AgS/TiO纳米管阵列（NTAs），并将其用作光阴极保护应用的光阳极。分别用场发射扫描电子显微镜、高分辨率透射电子显微镜、紫外可见漫反射吸收光谱、X射线衍射仪和X射线光电子能谱对复合材料的微观形貌、光吸收性能、晶体结构和元素价态进行了表征。还研究了InS/AgS/TiONTAs对Q235碳钢（CS）的光阴极保护性能。InS/AgS/TiO纳米复合材料比纯TiONTAs表现出更好的光电催化和光阴极保护性能。与Q235 CS耦合的InS(9)/AgS(8)/TiO光电极的光电流密度达到211μA/cm²，约为TiONTAs的4.5倍。光照下与InS(9)/AgS(8)/TiO耦合的Q235 CS的光生电位相对于饱和甘汞电极（SCE）负移至-0.92 V。结果表明，InS和AgS的共敏化作用可以将TiO的光吸收扩展到可见光范围，并提高其光电转换效率。
