Journal
APPLIED SURFACE SCIENCE
Volume 414, Issue -, Pages 218-223Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.04.109
Keywords
Polypyrrole; Carbon nanotubes; Framework; Dye adsorption; Electrochemical supercapacitor
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Funding
- National Natural Science Foundation of China [21304003]
- Shenzhen Science and Technology Innovation Committee [JCYJ20150806112401354, JCYJ20160330095448858, JCYJ20140627145346390]
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Three-dimensional carbon nanotube frameworks have been prepared via pyrolysis of polypyrrole nanotube aerogels that are synthesized by the simultaneous self-degraded template synthesis and hydrogel assembly followed by freeze-drying. The microstructure and composition of the materials are investigated by thermal gravimetric analysis, Raman spectrum, X-ray photoelectron spectroscopy, transmission electron microscopy, and specific surface analyzer. The results confirm the formation of three-dimensional carbon nanotube frameworks with low density, high mechanical properties, and high specific surface area. Compared with PPy aerogel precursor, the as-prepared three-dimensional carbon nanotube frameworks exhibit outstanding adsorption capacity towards organic dyes. Moreover, electrochemical tests show that the products possess high specific capacitance, good rate capability and excellent cycling performance with no capacitance loss over 1000 cycles. These characteristics collectively indicate the potential of three-dimensional polypyrrole-derived carbon nanotube framework as a promising macroscopic device for the applications in environmental and energy storages. (C) 2017 Elsevier B.V. All rights reserved.
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