转化沉淀法制备可见光光催化剂Ag_3PO_4的研究  

Study on the Preparation of Visible Light Ag_3PO_4 Photocatalyst by Transformation Precipitation Method

作　　者：王建武[1] 丁光月[2] 王韵芳[2] 李双志[2] 

机构地区：[1]山西晋丰煤化工有限责任公司,山西高平048400 [2]太原理工大学化学化工学院,太原030024

出　　处：《太原理工大学学报》2013年第1期103-106,共4页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(20876104);国家自然科学青年基金资助项目(201206105)

摘　　要：采用转化沉淀法制备了一种新型可见光Ag3PO4光催化剂,并采用XRD、UV-vis、SEM及EDS等手段对其进行了表征。以水中甲基橙的降解为探针反应,在可见光照射下考察了制备过程中NaHCO3与K2HPO4的加入量对Ag3PO4光催化活性的影响,并在可见光及太阳光照射下将Ag3PO4与P25-TiO2的光催化活性进行了对比。实验结果表明,Ag3PO4在整个可见光谱范围内均有明显的吸收;在可见光及太阳光照射下Ag3PO4对甲基橙均具有较高光催化降解活性,且在同等条件下Ag3PO4的光催化活性明显高于P25-TiO2。A new type of photocatalytic material of Ag3PO4 was prepared by transformation precipitation method and characterized using XRD, UV-vis, SEM and EDS analysis methods in detail. The degradation of methyl orange in water was chosen as a probe reaction to study the effects of addition amount of NaHCO3 and K2 HPO4 on the photoeatalytie activity of Ag3PO4 under visible light irradiation. At the same time, the photocatalytic activities of Ag3PO4 and P25- TiO2were compared under visible and solar irradiation. Experimental results show that Ag3PO4 had significant absorption at the whole visible spectrum range and had much high photocatalytic activity on degradation of methyl orange under visible light and sunlight. The photoeatalytic activity of Ag3PO4 was significantly higher than P25-TiO2 under the same conditions.

关 键 词：Ag3PO4 太阳光 光催化 甲基橙 

分 类 号：O64[理学—物理化学]