Abstract
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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Funded by the National Natural Science Foundation of China (No. 21501054 ), the Collaborative Grant-in-Aid of the HBUT National "111" Center for Cellular Regulation and Molecular Pharmaceutics (No. XBTK-2018003) and the Talents Program from Hubei University of Technology (No. BSQD14010)
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Guo, H., Jiang, S., Wang, C. et al. Carbonaceous Nanofibers-titanium Dioxide Nanocomposites: Synthesis and Use as a Platform for Removal of Dye Pollutants. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 34, 303–307 (2019). https://doi.org/10.1007/s11595-019-2051-9
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DOI: https://doi.org/10.1007/s11595-019-2051-9