TiO_2纳米粒子及纳米棒在活性碳纤维上的生长研究  

Growth of TiO_2 nanoparticles and nanorods on activated carbon fiber

作　　者：姜苏[1] 董如林[1] 陈智栋[1] 张汉平[1] 王旭红[2] 金长春[1] 莫剑臣 

机构地区：[1]常州大学石油化工学院,常州213164 [2]常熟理工学院化学与材料工程学院,常熟215500

出　　处：《化工新型材料》2015年第12期118-120,共3页New Chemical Materials

基　　金：国家自然科学基金项目(51273027)

摘　　要：通过两步水热方法,在活性碳纤维上依次沉积了锐钛矿型TiO_2纳米粒子及金红石型TiO_2纳米棒,SEM及XRD实验结果表明:在纤维表面预沉积锐钛矿型TiO_2纳米粒子有助于后续金红石型TiO_2纳米棒的生长。随着纳米棒的生长,纳米粒子的质量分数下降。与单纯锐钛矿型TiO_2纳米粒子负载的纤维相比,纳米棒生长时间2.5h相应的混晶TiO_2负载的活性碳纤维显示了对亚甲基蓝较高的光催化活性。在对混晶TiO_2负载的纤维用辛基三甲氧基硅烷处理后,纤维毡的表面显示超疏水性,并且水接触角随纳米棒生长时间的延长而增大。Anatase TiO2 nanoparticles and rutile TiO2 nanorods were deposited in sequence on the surface of activated carbon fiber（ACF）by a two-step hydrothermal process.SEM and XRD results indicated that the predeposited anatase TiO2 nanoparticles plaied an assisting role in the later growth of rutile TiO2 nanorods.The mass fraction of anatase to rutile on the fiber decreased with the growing of the nanorods.The TiO2 phase hybrid loaded ACF with nanorod growth time of2.5hshowed an increased photocatalytic activity for methylene blue as compared with the pure anatase TiO2 nanoparticles loaded ACF.After being modified with trimethoxyoctylsilane,the TiO2 phase hybrid loaded ACF felt showed superhydrophobicity,and the contact angle increased as the growth time of TiO2 nanorod was prolonged.

关 键 词：活性碳纤维 TIO2 纳米粒子 纳米棒 光催化 疏水性 

分 类 号：O614.411[理学—无机化学] TB383.1[理学—化学]