分别加热醋酸锌和水洗后的可膨胀石墨、干燥后的可膨胀石墨和膨胀石墨(Eg)的混合物,制备了3种不同的膨胀石墨/znO复合材料,分别记为Eg/znO-1,Eg/znO-2和Eg/znO-3。使用X射线衍射分析(Xrd)、扫描电子显微镜(SEM)和brAnAuEr-EMMETT-TEllEr(bET)比表面积等技术对样品结构进行表征。在紫外线(uV)照射下,研究了Eg/znO对水中亚甲基橙的去除效率。结果表明,Eg/znO同时具有膨胀石墨的吸附功能和znO的降解功能。在3种Eg/znO中,Eg/znO-3对水中甲基橙的去除效率最高。使用Eg/znO-3,甲基橙去除率受Eg/znO-3热处理温度和znO含量的影响。在优化工艺条件下,经过3.5HuV照射,水中甲基橙可被完全去除。Three exfoliated graphite (EG) doped with ZnO,marked as EG/ZnO-1,EG/ZnO-2 and EG/ZnO-3 composites,were prepared by heating a mixture of zinc acetate with water-washed expansible graphite,dried expansible graphite and EG,respectively.The composites were characterized by XRD,SEM and Branauer-Emmett-Teller (BET).Under UV irradiation,the removal of methyl orange (MO) from aqueous solution with the composites was investigated.The experimental results showed that the composites could synchronously provide with the adsorption efficiency of EG and decomposition efficiency of ZnO.Among all composites,EG/ZnO-3 was the most effective on removing MO.The MO removal efficiency of EG/ZnO-3 was influenced by the heating temperature and the ZnO content.After selection of desired operation parameters,the complete removal of MO could be achieved after 3.5 h UV irradiation.河北省科技攻关项目(05216701D
