摘要
为了提高氧化锌的光催化性能、净化水体有机污染,通过共沉淀、退火和光还原处理成功制备了锰掺杂浓度为4 at%的纳米氧化锌与石墨烯复合光催化剂,并采用扫描电镜、X-射线衍射仪、X-射线光电子能谱仪和紫外可见分光光度计进行表征和光催化活性测试.表征结果显示锰掺杂纳米氧化锌成功附着在石墨烯表面;掺杂后的锰离子以正三价形式存在于纳米氧化锌晶格中,同时增大了纳米氧化锌的带隙.光催化活性测试结果表明所合成的样品与纯氧化锌和纳米氧化锌/石墨烯复合材料相比具有较高的光催化性能,其光催化效率达到100%.
In order to improve the photocatalytic performance of zinc oxide and purify organic pollution in water,nano-ZnO and graphene compound photocatalyst with manganese doping concentration of 4 at%were successfully prepared by co-precipitation,annealing and photoreduction.The as-synthesized sample was characterized by scanning electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy and ultraviolet-visible spectrophotometer.The results show that manganese doped nano-zinc oxide successfully adheres to the surface of graphene,and the doped manganese ions exist in the form of positive trivalent in the lattice of nano-zinc oxide,while increasing the band gap of nano-zinc oxide.The results of photocatalytic activity test show that the as-synthesized samples have higher photocatalytic activity than pure zinc oxide and nano-zinc oxide/graphene composites,and its photocatalytic efficiency reaches 100%.
作者
吴本泽
李锦
刘卫梦
李强
WU Benze;LI Jin;LIU Weimeng;LI Qiang(School of Physical Science and Technology,Xinjiang University,Urumqi Xinjiang 830046,China)
出处
《新疆大学学报（自然科学版）》
CAS
2019年第2期153-159,共7页
Journal of Xinjiang University(Natural Science Edition)
基金
新疆维吾尔自治区自然科学基金项目(2017D01C022)
关键词
纳米氧化锌
锰掺杂
石墨烯
复合光催化剂
光催化性能
nano-ZnO
manganese doping
graphene
compound photocatalyst
photocatalytic performance
