纳米碳纤维固载TiO_2  

TiO_2 Nanoparticles Loaded on Carbon Nanofibers

作　　者：陈影声[1] 陈震[1,2] 卢才英[1] 陈日耀[1] 陈晓[1] 郑曦[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007 [2]宁德师范学院化学系,宁德352100

出　　处：《应用化学》2010年第10期1188-1191,共4页Chinese Journal of Applied Chemistry

基　　金：福建省科技厅福建省自然科学基金项目(D0710009);福建省发展改革委员会资助项目(闽发改资:2008762)

摘　　要：采用聚乙烯吡咯烷酮(PVP)溶胶通过静电纺丝法制备了PVP纳米纤维。将PVP纳米纤维直接固载在碳棒上,在250℃预氧化,850℃炭化,得到碳纳米纤维。将碳纤维渍取钛酸丁酯,200℃下热处理后在550℃空气中焙烧,制得负载型纳米TiO2。利用扫描电子显微镜、红外吸收光谱、X射线衍射等测试技术对纳米纤维进行了表征。并把负载型TiO2分散在亚甲基蓝溶液中,分析了TiO2固载纳米碳纤维的光催化活性。结果表明,在100mL20mg/L亚甲基蓝溶液中加入1.0mgTiO2固载碳纳米纤维,光催化降解40min后,亚甲基蓝的分解率接近75%。Polyvinylpyrrolidone（PVP） nanofibers loaded on kryptol were fabricated from PVP sol via an electrospinning technique,followed by preoxidation at 250 ℃ and carbonization at 850 ℃.To obtain TiO2 nanoparticles loaded on these carbon nanofibers,the carbon nanofibers were firstly soaked by titanium n-butyloxide（Ti （OC4 H9n） 4） and subsequently heat-treated at 200 ℃ and calcined at 550 ℃.The morphologies and structure of the products were investigated by scanning electron microscopy（SEM）,Fourier transform infrared spectrometry（FT-IR）,and X-ray diffraction（XRD）.TiO2 loaded on carbon nanofibers were used to study the degradation of methylene blue（100 mL 2.0 mg/L methylene blue） under UV irradiation for 40 min.The obtained nanocomposite exhibited a higher photo-catalytic activity and the degradation percentage of methylene blue was higher than 75%.

关 键 词：静电纺丝 碳纳米纤维 TIO2 亚甲基蓝光降解 

分 类 号：O643.3[理学—物理化学]