He Hongcai, Jiang Zhuolin, He Zhaoling, Liu Tao, Li Enzhu, Li Bao-Wen
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, People's Republic of China.
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China.
Nanoscale Res Lett. 2018 Jan 18;13(1):28. doi: 10.1186/s11671-018-2443-3.
An excellent ternary composite photocatalyst consisting of silver orthophosphate (AgPO), attapulgite (ATP), and TiO was synthesized, in which heterojunction was formed between dissimilar semiconductors to promote the separation of photo-generated charges. The ATP/TiO/AgPO composite was characterized by SEM, XRD, and UV-vis diffuse reflectance spectroscopy. The co-deposition of AgPO and TiO nanoparticles onto the surface of ATP forms a lath-particle structure. Compared with composite photocatalysts consisting of two phases, ATP/TiO/AgPO ternary composite exhibits greatly improved photocatalytic activity for degradation of rhodamine B under simulated solar irradiation. Such ternary composite not only improves the stability of AgPO, but also lowers the cost by reducing application amount of AgPO, which provides guidance for the design of AgPO- and Ag-based composites for photocatalytic applications.
合成了一种由磷酸银（AgPO）、凹凸棒石（ATP）和TiO组成的优异三元复合光催化剂，其中在不同半导体之间形成异质结以促进光生电荷的分离。通过扫描电子显微镜（SEM）、X射线衍射（XRD）和紫外可见漫反射光谱对ATP/TiO/AgPO复合材料进行了表征。AgPO和TiO纳米颗粒共沉积在ATP表面形成板条状颗粒结构。与两相复合光催化剂相比，ATP/TiO/AgPO三元复合光催化剂在模拟太阳光照射下对罗丹明B的降解表现出大大提高的光催化活性。这种三元复合材料不仅提高了AgPO的稳定性，还通过减少AgPO的用量降低了成本，这为光催化应用中AgPO基和Ag基复合材料的设计提供了指导。
