Carbonaceous Nanofibers-titanium Dioxide Nanocomposites: Synthesis and Use as a Platform for Removal of Dye Pollutants
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2019年第2期
论文作者：郭洪影 JIANG Shan WANG Chaoyuan LI Shenwan FENG Jianjian 孙红梅 ZHU Hongda GUO Huiling LIU Mingxing SUN Honghao
文章页码：303 - 307
摘 要：A mild chemistry route was developed to prepare carbonaceous nanofibers-titanium dioxide（CNF-TiO2） nanocomposites for removal of dye pollutants. In the process of the template-directed hydrothermal carbonization（HTC）, ultrathin Te nanowires were adopted as templates and glucose as the carbon source, and TiO2 was decorated on CNF via the hydrolysis of tetrabutyltitanate in the presence of CNF in ethanol. The as-prepared materials were characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, energy-dispersive X-ray（EDX） and X-ray diffraction（XRD）. SEM and TEM observations displayed that TiO2 nanoparticles were anchored on the CNF. EDX and XRD data confirmed that the assynthesized samples were CNF-TiO2, and TiO2 belonged to anatase titania. Taking advantage of combined benefits of carbonaceous nanofibers and titanium dioxide, these CNF-TiO2 nanocomposites exhibited higher removal efficiency in a short time and showed good reusability. It was showed that over 97% of Rhodamine B could be removed in 15 min without generating the solid and liquid wastes. The removal efficiency of dyes was still over 80% after reuse in five cycles. All the results demonstrate that the as-prepared CNF-TiO2 composites are effective materials for fast and effective removal of dye pollutants and thus can provide a new platform for dye decontamination.
郭洪影，JIANG Shan，WANG Chaoyuan，LI Shenwan，FENG Jianjian，孙红梅，ZHU Hongda，GUO Huiling，LIU Mingxing，SUN Honghao
School of Bioengineering and Food, Key Laboratory of Fermentation Engineering (Ministry of Education), Key Laboratory of Industrial Microbiology in Hubei, National ‘‘111’’ Center for Cellular Regulation and Molecular Pharmaceutics, Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology
摘 要：A mild chemistry route was developed to prepare carbonaceous nanofibers-titanium dioxide（CNF-TiO2） nanocomposites for removal of dye pollutants. In the process of the template-directed hydrothermal carbonization（HTC）, ultrathin Te nanowires were adopted as templates and glucose as the carbon source, and TiO2 was decorated on CNF via the hydrolysis of tetrabutyltitanate in the presence of CNF in ethanol. The as-prepared materials were characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, energy-dispersive X-ray（EDX） and X-ray diffraction（XRD）. SEM and TEM observations displayed that TiO2 nanoparticles were anchored on the CNF. EDX and XRD data confirmed that the assynthesized samples were CNF-TiO2, and TiO2 belonged to anatase titania. Taking advantage of combined benefits of carbonaceous nanofibers and titanium dioxide, these CNF-TiO2 nanocomposites exhibited higher removal efficiency in a short time and showed good reusability. It was showed that over 97% of Rhodamine B could be removed in 15 min without generating the solid and liquid wastes. The removal efficiency of dyes was still over 80% after reuse in five cycles. All the results demonstrate that the as-prepared CNF-TiO2 composites are effective materials for fast and effective removal of dye pollutants and thus can provide a new platform for dye decontamination.
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