摘要
以天然矿物凹凸棒石(简称ATP)为载体,在其表面原位生成纳米Ag3PO4,制备Ag3PO4/ATP复合光催化剂。利用X射线衍射(XRD)、透射电子显微镜(TEM)、紫外-可见漫反射光谱(Uv-vis DRS)等测试方法对复合材料的表面结构、形貌、光响应性能进行了研究。结果表明:Ag3PO4/ATP复合光催化剂中Ag3PO4以纳米微球均匀分布在ATP表面,平均直径12.5 nm。进一步通过150 W碘钨灯下降解甲基橙(MO)的实验,研究了光催化材料的可见光催化性能。实验结果表明,Ag3PO4、Ag3PO4/ATP在可见光下具有光催化活性,Ag3PO4/ATP的光催化性能优于Ag3PO4,2.5 h对甲基橙的降解率达到93.4%。
Ag3PO4/ATP photocatalysts were prepared by depositing of Ag3PO4 particles on the natural attapulgite surfaces via an in-situ synthesis method. Phase compostion, particle morphology and optical property of these samples were characterized by X-ray diffraction （XRD）, transmission electron microscope（TEM） and UV-vis diffuse reflectance spectra , respectively. The results showed that AgaPO4 nanopheres with the average diameter of 12.5 nm were distributed evenly on the surface of the attapulgite and formed AgaPO4/ATP photocatalysts. The degradation of methyl orange （MO） was carried out to investigate the visible-light catalytic activity under 150 W iodine-tungsten lamp. The results indicated that both Ag3 PO4 and Ag3 PO4/ATP photocatalysts had photocatalytic activity to methyl orange pollutant under visible light, and AgaPOa/ATP displayed higher photodegradation efficiency than AgaPO4, with degradation rate of 93.4% within 2.5 h.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第10期2087-2091,2098,共6页
Journal of Synthetic Crystals
基金
中央高校基本科研业务费专项资金资助(2013XK07)
