摘要
采用直接沉淀法制备了膨胀石墨负载N掺杂氧化锌催化剂,用XRD和SEM对样品进行表征,以染料甲基橙的光催化降解为模型反应评价了该催化剂的光催化活性。结果表明:N掺杂氧化锌以纳米颗粒的形式分散在具有疏松多孔蠕虫状结构的膨胀石墨片层表面,膨胀石墨为N掺杂氧化锌提供高浓度的三维降解环境,在紫外光区具有良好的催化活性。在最佳条件下降解1h,其降解率可达92%,催化剂在重复使用4次后降解率仍比较高。
Exfoliated graphite-supported N-ZnO photocatalyst is prepared by the direct precipitation method.The structure of the composite samples is characterized by X-ray diffraction and scanning electron microscope.Decolorizing of methyl orange（MO）solution as the model reaction,the photocatalytic activity is evaluated.The experimental results show that N-ZnO is deposited on the flakes worm-like of EG in the forms of nanocrystalline.The exfoliated graphite provides a three dimensional environment for photocatalytic reaction,which proves that sample has a higher adsorption capacity in UV region.Under optimal conditions for 1h,the decolorization efficiencies of methyl orange（MO）can reach 92%.Recycling use of the catalyst reveals that the graphite supported N-ZnO photocatalyst still has a high photocatalytic efficiency when repeatedly used for four times.
出处
《实验技术与管理》
CAS
北大核心
2014年第11期67-70,共4页
Experimental Technology and Management
基金
国家自然科学基金项目(21346002)
山西省教育厅高科技项目(2013140)
山西省自然科学青年基金项目(2012021006-1)
山西大同大学校级科研项目(2009K3 2010Q11)
