Microstructure and photocatalytic activity of electrospun carbon nanofibers decorated by TiO2 nanoparticles from hydrothermal reaction/blended spinning |
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| Affiliation: | 1. School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China;2. School of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, China;1. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China;2. School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia;1. Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Winterbergstraße 28, 01277 Dresden, Germany;2. Technische Universität Dresden/Institute of Textile Machinery and High Performance Material Technology, Breitscheidstr. 78, 01237 Dresden, Germany;3. P-D Glasseiden GmbH Oschatz, Wellerswalder Weg 17, 04758 Oschatz, Germany;1. Department of Chemical Engineering & Technology, Birla Institute of Technology, Mesra, Ranchi 835-215, India;2. School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Bukgu, Gwangju 500-757, Republic of Korea;3. Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, TX 75080, United States;1. Energy Storage and Conversion Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641-046, Tamil Nadu, India;2. Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA;3. Faculty of Applied Chemical Engineering, Chonnam National University, Gwangju, 500-757, South Korea |
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| Abstract: | Recently, carbon nanofibers@TiO2 (CNFs@TiO2) composites as photocatalysts for dye degradation have attracted intense attention. However, only few contributions had been made to investigate systematically the differences between the various preparation approaches and the influence of thermal treatment on the photocatalytic activity. In this work, the electrospun CNFs@TiO2 composites which were prepared by hydrothermal reaction and blended spinning, respectively, have been fabricated via stabilization in air at 280 °C and then carbonization in N2 at heat treatment temperature between 500 and 1100 °C. The composites which were prepared by hydrothermal reaction and blended spinning showed the outstanding photocatalytic activity at 900 °C and 1100 °C, respectively. And the photocatalytic activity of composites prepared by hydrothermal reaction was higher than that prepared by blended spinning, but reversibility of the composites showed a reverse trend. These results indicated that the effect of heat treatment temperature on the photocatalytic activity depended on the synergistic effect among the adsorptive property of CNFs, TiO2 loading amount and anatase phase content in composites. Hence, combining the merits of hydrothermal reaction and blended spinning, a novel method for preparing CNFs@TiO2 composites with high TiO2 loading amount and strong interfacial interaction could be envisioned. |
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| Keywords: | Heat treatment temperature Hydrothermal reaction Blended spinning Photocatalytic activity |
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