摘要
通过溶剂热法制备了ZnO纳米棒,进一步在ZnO纳米棒表面沉积碳点(C-dots)和Ag,成功制备了C-dots和Ag共修饰的ZnO纳米复合光催化剂(ZnO/C-dots/Ag)。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、比表面积(BET)和紫外可见(UV-Vis)分光光谱等分析对系列样品进行了物理表征。结果表明,C-dots的引入可以有效加速Ag在ZnO表面的沉积。在白光下降解抗生素(诺氟沙星)的结果表明,ZnO/C-dots/Ag复合材料的光催化性能相比于纯的ZnO、ZnO/C-dots和ZnO/Ag材料得到了明显的提升,并且光催化性能稳定。表明C-dots和Ag在ZnO光催化降解抗生素过程中起到了协同作用,C-dots起到实现光生电子快速转移的作用,配合Ag的等离子体共振效应共同加速了ZnO的光催化降解过程。
ZnO nanorods were prepared by solvothermal method.Furthermore,C-dots and Ag were deposited on the surface of ZnO nanorods successfully to prepare ZnO Nanocomposite photocatalyst（ZnO/C-dots/Ag）co-modified by C-dots and Ag.X-ray diffraction（XRD）,scanning electron microscope（SEM）,specific surface area（BET）,ultraviolet visible（UV-Vis）spectroscopy and other techniques have been used to characterize the series of samples.The results show that the introduction of carbon dots can accelerate Ag deposition on the ZnO surface effectively.The degradation of antibiotics（Norfloxacin）under white light showed that the photocatalytic property of ZnO/C-dots/Ag composites was significantly improved compared with pure ZnO,ZnO/C-dots and ZnO/Ag materials,and the photocatalytic performance was stable.This indicates that C-dots and Ag plays a synergistic role in the photocatalytic degradation of antibiotics by ZnO.The C-dots plays a role in the rapid photoelectron transfer and the plasmon resonance effect combined of Ag accelerates the photocatalytic degradation of ZnO.
作者
邓新
于洪亮
黄杰
宋泓清
DEND Xin;YU Hongliang;HUANG Jie;SONG Hongqing(School of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Science and Techology on Marine Corrosion and Protection Laboratory,Luoyang Ship Material Research Institute,Qingdao 266100,China;Chongqing Expressway Group Co.,Ltd.South China Operation Branch,Chongqing 400042,China)
出处
《化工科技》
CAS
2018年第3期22-27,共6页
Science & Technology in Chemical Industry
基金
航天XXX可靠性重点实验室开放基金资助项目(27JD-SYSKY-2015/010)
海洋腐蚀与防护国家重点实验室开放基金项目(KF160413)
