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Low‐Temperature and Large‐Scale Synthesis of Carbon Nanofiber Web via Electrospinning and Their Efficient Removal of Cr(VI) Ions
Author(s) -
Pan Xinying,
Nan Hui,
Yang Pan,
Yang Lijun,
Wang Gang,
Chen Huiyuan,
Lin Hong,
Zhao Xiaochong
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802844
Subject(s) - polyacrylonitrile , electrospinning , adsorption , polyvinylpyrrolidone , nanofiber , carbon nanofiber , chemical engineering , carbon fibers , materials science , ion , acrylonitrile , polymer , chemistry , nuclear chemistry , polymer chemistry , nanotechnology , organic chemistry , composite material , copolymer , carbon nanotube , composite number , engineering
The carbon nanofiber web (CNW) has been synthesized by electrospinning of polyacrylonitrile (PAN) and polyvinylpyrrolidone (PVP) co‐polymer precursor solution and a following rather low‐temperature (450 o C) thermal treatment. The effect of PAN to PVP ratios on morphology and structure of nanofibers were investigated. Furthermore, the CNW with the fixed composition (PAN:PVP=5:5) were hydroxylated by NaOH solution (obtained CNW‐03‐OH). The CNW‐03‐OH were evaluated for their adsorption performance with Cr(VI) ions. Effects of the initial pH, contact time and temperature for Cr(VI) adsorption were investigated. Results show that the CNW‐03‐OH has an efficient adsorption capacity of 56.9 mg/g for Cr(VI) ions. Moreover, the adsorption capacity remained up to 55% after five cycles, indicating that the CNW‐03‐OH has a promising in practice for application in Cr(VI) ions adsorption.