期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 269, 期 -, 页码 580-587出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2018.10.035
关键词
Cotton waste; Activated carbon; FeCl3/ZnCl2 activation; Adsorption; Methylene blue; Eriochrome black T
资金
- National Natural Science Foundation of China [21707090]
- Chinese Postdoctoral Science Foundation [2017M611590]
- Shanghai Natural Science Foundation [14ZR1428900]
FeCl3/ZnCl2 was used as activating agent in order to prepare cotton waste-based activated carbon. The optimal conditions for activated carbon determined by orthogonal experiments were as follows: activation temperature of 400 C, mass ratio of 1:1 (FeCl3/ZnCl2), and activation time of 1 h. Thermogravimetric analysis was conducted to investigate the weight loss process. N-2 adsorption/desorption isotherms, XRD, SEM, and FTIR were provided to analyze the crystal structure, pore development, morphological structure, and surface chemistry, respectively. The possible pore development was ascribed to the formation of molten ZnCl2 and Fe species, which then act as templates inside the carbon to form pore structures. This process was also related to dehydration of ZnCl2 and FeCl3 on cotton waste. Carbon activated by FeCl3/ZnCl2 exhibited higher BET surface area (1342 m(2) g(-1)) than carbon activated using FeCl3 (504 m(2) g(-1)). The adsorption performance of activated carbon was estimated using methylene blue and eriochrome black T.
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