摘要
采用浓硫酸剥离法制备g-C_3N_4纳米片,利用化学吸附法制备BiPO_4/g-C_3N_4光催化剂。运用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、紫外可见漫反射(UV-vis DRS)和X射线光电子能谱仪(XPS)对光催化剂的微观结构和界面性质进行了表征,证明了BiPO_4/g-C_3N_4光催化剂的成功制备。5%BiPO_4/g-C_3N_4光催化剂表现出最佳的光催化活性,紫外光下降解亚甲基蓝的表观速率常数是纯BiPO_4纳米棒的1.72倍,是P25的2倍。活性的提高主要归因于核壳结构的形成。
The g-C3N4 nanosheets were prepared by chemical exfoliation method via concentrated sulfuric acid.BiPOJg-C3N4 photocatalysts were prepared by chemical adsorption method. The X-ray diffraction （XRD）, scanningelectron microscopy （SEM）, transmission electron microscopy （TEM）, UV- visible diffused reflectance spectroscopy（UV- vis DRS ） and X- ray photoelectron spectroscopy （XPS） were used to study the microstructure and interfaceproperties. It proved that BiPO4/g-C3N4 photoeatalysts were prepared successfully. 5% BiPO4/g-C3N4 photocatalystexhibited the highest photocatalytic activity under ultraviolet light irradiation using methylene blue as the target pollutant.The photocatalytic activity of 5% BiPO4/g-C3N4 was 1.72 times and 2 times as high as that of pure BiPO4 and P25,respectively. The enhancement of BiPO4/g-C3Naphotoeatalyst can be attributed to the formation of core-shell structure.
出处
《广州化工》
CAS
2016年第24期51-54,70,共5页
GuangZhou Chemical Industry
