引用本文:
陈影声, 陈震, 卢才英, 陈日耀, 陈晓, 郑曦. 纳米碳纤维固载TiO2[J]. 应用化学,
2010, 27(10): 1188-1191.
doi:
10.3724/SP.J.1095.2010.90832
Citation: CHEN Ying-Sheng, CHEN Zhen, LU Cai-Ying, CHEN Ri-Yao, CHEN Xiao, ZHENG Xi. TiO2 Nanoparticles Loaded on Carbon Nanofibers[J]. Chinese Journal of Applied Chemistry, 2010, 27(10): 1188-1191. doi: 10.3724/SP.J.1095.2010.90832
Citation: CHEN Ying-Sheng, CHEN Zhen, LU Cai-Ying, CHEN Ri-Yao, CHEN Xiao, ZHENG Xi. TiO2 Nanoparticles Loaded on Carbon Nanofibers[J]. Chinese Journal of Applied Chemistry, 2010, 27(10): 1188-1191. doi: 10.3724/SP.J.1095.2010.90832
纳米碳纤维固载TiO2
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100mL 20mg/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%。
English
TiO2 Nanoparticles Loaded on Carbon Nanofibers
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 (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%.
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Key words:
- electrospinning
- / carbon nanofiber
- / TiO2
- / photodegradation of methylene blue
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