Tański Tomasz, Zaborowska Marta, Jarka Paweł, Woźniak Anna
Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, Gliwice, Poland.
Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, Gliwice, Poland.
Sci Rep. 2022 Jul 5;12(1):11329. doi: 10.1038/s41598-022-14899-z.
Hydrophilic photocatalytically active ZnO and ZnO thin films doped with YbO and EuO (rare earth metal oxide, REM) with optical transmittance exceeding 76% in the visible light range (λ = 550 nm) were prepared by a combination of sol-gel technique, spin-coating and high temperature thermal treatment at 500 and 600 °C. The thin films were tested using advanced research methods, i.e.: morphology and topography and fractures along with approximate thickness values were investigated on scanning electron microscope (SEM), chemical composition was determined using X-ray Energy Dispersive Spectroscopy (X-ray Energy Spectroscopy), topography and roughness were measured on atomic force microscope (AFM), water contact angle values were determined by sitting water droplet method, optical properties of the fabricated materials were investigated using UV/Vis spectrophotometer. The decolorization efficiency of rhodamine B in aqueous solution was analyzed over a period of 190 min, obtaining degradation rates of: 54.7% and 43.1%, for ZnO and ZnO coatings doped with ytterbium oxide and europium oxide, respectively. The roughness of thin hybrid coatings did not exceed 50 nm, ensuring effective absorption of electromagnetic radiation by the layers. The methodology presented by the authors for the fabrication of thin hybrid films characterized by the key properties of self-cleaning coatings can be successfully applied to coatings of photovoltaic panels and architectural glass structures.
采用溶胶 - 凝胶技术、旋涂法以及在500和600℃下进行高温热处理相结合的方法，制备了亲水性光催化活性氧化锌以及掺杂氧化镱（YbO）和氧化铕（EuO）（稀土金属氧化物，REM）的氧化锌薄膜，其在可见光范围（λ = 550 nm）内的透光率超过76%。使用先进的研究方法对薄膜进行了测试，即：在扫描电子显微镜（SEM）上研究了薄膜的形态、形貌和断裂情况以及近似厚度值，使用X射线能量色散光谱（X射线能谱）测定了化学成分，在原子力显微镜（AFM）上测量了形貌和粗糙度，通过坐滴法测定了水接触角值，使用紫外/可见分光光度计研究了所制备材料的光学性能。在190分钟的时间内分析了罗丹明B在水溶液中的脱色效率，对于掺杂氧化镱和氧化铕的氧化锌和氧化锌涂层，降解率分别为54.7%和43.1%。混合薄膜涂层的粗糙度不超过50 nm，确保了各层对电磁辐射的有效吸收。作者提出的用于制备具有自清洁涂层关键特性的混合薄膜的方法可以成功应用于光伏面板和建筑玻璃结构的涂层。
