摘要
采用水热法制备Ag3PO4晶体,通过调节氨水的浓度,实现了对产物形貌的微结构调控。用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)等手段对样品的晶体结构、形貌和元素组成进行了表征。UV-Vis图证实了制备的Ag3PO4样品在可见光范围内有明显吸收。光催化降解实验结果表明,可见光条件下,商用TiO2光催化效果微乎其微,Ag3PO4却是一种高效的可见光响应催化剂。经微结构调控的Ag3PO4纳米棒具有更多的光催化活性点和有利于载流子传输和分离的结构,其光催化效率大幅提升,是Ag3PO4微米颗粒光催化效率的1.6倍。
The Ag3 PO4 photocatalyst was prepared by the hydrothermal method. The micro-structural regulation on the morphology was achieved by adjusting the addition of different concentrations of ammonia. The phase and shape of the products were characterized by XRD, SEM and XPS. The graph of UV-Vis approved that Ag3 PO4 had obviously absorption of visible light. The results of photocatalytic degradation experiments were shown below. Under visible light conditions, the photocatalytic ability of TiO2-P25 was almost negligible. Therefore, the Ag3 PO4 was still a kind of photocatalyst with high efficiency. While the micro-structural regulated Ag3 PO4 nanorods would increase its photocatalytic activity points and were beneficial to the transporting and separating of photogenerated carriers. The photocatalytic degradation efficiency of Ag3 PO4 nanorods to Rhodamine B was 1.6 times quicker than Ag3 PO4 particles.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第5期119-121,124,共4页
New Chemical Materials
关键词
Ag3PO4
光催化
水热法
纳米棒
Ag3 PO4, photocatalysis, hydrothermal method, nanorod
