摘要
以介孔γ-Al2O3为载体,采用化学沉积-光还原法制备了具有表面金属等离子体效应的Ag-AgCl/Al2O3纳米复合光催化材料,用XRD对样品对材料的结构进行了表征。采用正交试验法分别研究了样品在紫外光和可见光下对甲基橙的降解效果,获得了最佳工艺条件:AgNO3∶NaCl∶Al2O3比例为2∶2∶1,紫外光还原时间为60 min,甲基橙浓度为5 mg/L。在紫外光条件下,对5 mg/L、10 mg/L和20 mg/L的甲基橙进行降解实验,降解率分别是97.46%、96.49%、95.96%。而在可见光条件下,降解率分别是98.59%、98.24%、97.1%。因此,所制备的材料具有良好的光催化性能,在可见光下效果更加理想。
Used γ- Al2O3 as carrier, Ag-AgCl/Al2O3 nanocomposite materials with surface metal plasma effect were prepared by chemical deposition- photoreduction method. XRD was used to analyze the phase structure of composite, and its photocatalytic properties under visible light and ultraviolet wcrc studied by orthogonal experiments respectively. The optimum conditions were given as following： AgNO3 ： NaCl ： Al2O3 ratio of 2 ： 2 ： 1, UV reduction time was 60 min, methyl orange concentration of 5 mg/L. In the conditions of UV, the degradation rate results about 5 mg/L, 10 mg/L and 20 mg/L of methyl orange was 97.46 %. 96.49 %, 95.96 %, respectively. In conditions of visible light, the corresponding degradation rate was 98.59 %, 98.24 %, 97.1%, respectively. Therefore, the as-prepared materials possess good photocatalytic properties, and the degradation effect is more ideal under visible light.
出处
《广东化工》
CAS
2014年第16期10-11,共2页
Guangdong Chemical Industry
基金
广西高校科学技术研究项目(Grant No.2013ZD030)
