Pt/TiO_2纳米管对药品中布洛芬的光电催化转化研究

Study on Photo-electrocatalytic Degradation of Ibuprofen by Pt/TiO_2 Nanotube

布洛芬(IBP)是一种使用量和环境排放量巨大的典型消炎止痛药品,其化学性质稳定且难生物降解,导致地表水中出现越来越多的IBP污染物累积。文章借助电化学沉积技术,将贵金属Pt负载到Ti O_2纳米管上,以此为工作电极,实现可见光下IBP的光电催化氧化降解。论文首先完成载Pt/Ti O_2纳米管的制备,通过场发射扫描电镜和能谱仪对材料进行形貌表征及成分分析;系统研究了布洛芬初始浓度、溶液pH值、电极表面载Pt量及外加电压因素对光电催化降解IBP的影响。该反应体系为可见光下IBP的光电催化降解提供新的技术方法。

Ibuprofen（IBP）,a commonly-used anti-inflammatory agent,has been accumulated in the environment for years due to its chemical stability,being recalcitrant to bio-degradation.In this paper,the Pt/Ti O2nanotube was made using the galvanostatic eletro-deposition technology,thus Pt being loaded onto Ti O2nanotube,and its characteristics were studied by SEM and EDS.With Pt/Ti O2nanotube as a working anode electrode,the experiment of photo-electrocatalytic degradation of IBP was conducted under visible light,which was focused on the factors affecting IBP degradation,including initial concentration of the solution,p H value,Pt amount loaded on the electrode surface and the impressed voltage.In summary,the reaction system of photo-electrocatalytic under visible light provided a novel approach to IBP degradation.