C掺杂TiO_(2)纳米管阵列的制备及光催化降解甲基橙研究  

Preparation of C-doped TiO_(2) Nanotube Arrays and Study on Photocatalytic Degradation of Methyl Orange

作　　者：林晓霞[1] 邵文博 田文杰 顾伟霞 LIN Xiao-xia;SHAO Wen-bo;TIAN Wen-jie;GU Wei-xia(Jinling Institute of Technology,Nanjing 211169,China)

机构地区：[1]金陵科技学院材料工程学院,江苏南京211169

出　　处：《金陵科技学院学报》2023年第4期57-63,共7页Journal of Jinling Institute of Technology

基　　金：江苏省大学生创新训练计划(202313573107Y);江苏省现代教育技术研究重点课题(2022-R-100618)。

摘　　要：通过阳极氧化结合水热法制备C掺杂TiO_(2)纳米管阵列(C-TNTs),利用X射线衍射(XRD)、扫描电子显微镜(SEM)、紫外-可见漫反射吸收光谱(UV-Vis)、X射线光电子能谱(XPS)对TiO_(2)纳米管阵列的晶型、形貌进行表征。结果表明,制备的C-TNTs具有较强的锐钛矿衍射峰,纳米管排列整齐,孔径一致;C-TNTs的平均内径为150 nm,管长约4.4μm。在紫外光照射下,TNTs与C-TNTs均有较高的光催化效率,120 min对甲基橙(MO)的降解率分别为90.9%和96.6%。在可见光照射下,C-TNTs在120 min对MO的降解率达86.5%,是TNTs的2.24倍。C-TNTs在可见光照射下,经5次循环使用后催化率仅下降3.2个百分点,具有较强的催化稳定性。C-doped TiO_(2)nanotube arrays(C-TNTs)are prepared by anodic oxidation combined with hydrothermal method.The crystal form and morphology of TiO_(2)nanotube arrays are characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),UV-Vis diffuse reflectance absorption spectroscopy(UV-Vis),and X-ray photoelectron spectroscopy(XPS).The results show that the prepared C-TNTs exhibit strong anatase diffraction peaks,the nanotubes are arranged neatly,and the pore size is consistent.The average inner diameter of the prepared C-TNTs is 150 nm,and the tube length is about 4.4μm.Under UV irradiation,both TNTs and C-TNTs exhibit high photocatalytic efficiency,with degradation rates of 90.9%and 96.6%for methyl orange(MO)at 120 minutes,respectively.Under visible light irradiation,the degradation rate of MO by C-TNTs reaches 86.5%at 120 minutes,which is 2.24 times that of TNTs.The catalytic efficiency of C-TNTs decreases by only 3.2 percentages points after 5 cycles of use under visible light irradiation,indicating strong catalytic stability.

关 键 词：阳极氧化法 C掺杂 TIO2纳米管阵列 光催化 甲基橙 

分 类 号：TQ134.11[化学工程—无机化工]