中华医学超声杂志

应用化学 ›› 2010, Vol. 27 ›› Issue (10): 1188-1191.DOI: 10.3724/SP.J.1095.2010.90832

• 研究论文 • 上一篇    下一篇

纳米碳纤维固载TiO2

陈影声1,陈震1,2*,卢才英1,郑曦1,陈晓1,陈日耀1   

  1. (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)
  • 收稿日期:2009-12-10 修回日期:2010-02-13 出版日期:2010-10-10 发布日期:2010-10-10
  • 通讯作者: 陈震，研究员，博士生导师; E-mail:zc1224@publ.fz.fj.cn; 研究方向：应用电化学、环境科学
  • 基金资助:
    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）

TiO2 Nanoparticles Loaded on Carbon Nanofibers

CHEN Ying-Sheng1, CHEN Zhen1,2*, LU Cai-Ying1, CHEN Ri-Yao1, CHEN Xiao1, ZHENG Xi1   

  1. (1.College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007;
    2.Chemistry Department,Ningde Normal University,Ningde 352100)
  • Received:2009-12-10 Revised:2010-02-13 Published:2010-10-10 Online:2010-10-10

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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100 mL 20 mg/L亚甲基蓝溶液中加入1.0 mg TiO2固载碳纳米纤维，光催化降解40 min后，亚甲基蓝的分解率接近75%。

关键词: 静电纺丝, 碳纳米纤维, 二氧化钛, 亚甲基蓝光降解

Abstract:

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(OC4H9n)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%.

Key words: electrospinning, carbon nanofibers, titanium dioxide, photodegradation of methylene blue

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