用于增强可见光光降解活性的硅酸银/花状氢氧化镁复合材料
Silicate silver/flower-like magnalium hydroxide composites for enhanced visible light photodegradation activities.
作者信息
Wang Yongyou, Jing Yaqiong, Li Wenxue, Yu Ming, Ao Xianquan, Xie Yan, Chen Qianlin
机构信息
College of Chemistry and Chemical Engineering, Guizhou University Guiyang 550025 Guizhou China
College of Materials Science and Engineering, Beijing University of Chemical Technology Beijing 100029 China.
出版信息
RSC Adv. 2018 Jun 27;8(41):23442-23450. doi: 10.1039/c8ra01154k. eCollection 2018 Jun 21.
Flower-like magnalium layered composites (MgAl-LDH) were first fabricated by a hydrothermal method, and a series of AgSiO /MgAl-LDH composites with different mole ratios was successfully prepared by loading AgSiO on the MgAl-LDH surface. The photocatalytic activities of the composites for the degradation of methylene blue (MB) were investigated under visible light irradiation (xenon lamp). The prepared AgSiO /MgAl-LDH composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy, thermogravimetric analysis (TG), and X-ray photoelectron spectroscopy (XPS). The results revealed that AgSiO /MgAl-LDH (5 : 1) displayed a photocatalytic degradation efficiency of 99.7% in 30 min for MB. The photocatalytic degradation rate was higher than that of pure AgSiO .
花状镁铝层状复合材料（MgAl-LDH）首先通过水热法制备，然后通过将AgSiO 负载在MgAl-LDH表面成功制备了一系列不同摩尔比的AgSiO /MgAl-LDH复合材料。在可见光照射（氙灯）下研究了复合材料对亚甲基蓝（MB）降解的光催化活性。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、紫外-可见漫反射光谱、热重分析（TG）和X射线光电子能谱（XPS）对制备的AgSiO /MgAl-LDH复合材料进行了表征。结果表明，AgSiO /MgAl-LDH（5∶1）在30分钟内对MB的光催化降解效率为99.7%。光催化降解率高于纯AgSiO 。
Zotero 插件