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Preparation of magnetic conjugated microporous polymers for highly efficient removal of dye from water
Author(s) -
Wang Wenlong,
Yu Jinfeng,
Yang Xiaoxin,
Yu Binglong,
Cai Xiulan
Publication year - 2019
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.6144
Subject(s) - microporous material , adsorption , materials science , sorption , aqueous solution , chemical engineering , nanoparticle , magnetic nanoparticles , polymer , wastewater , congo red , desorption , methylene blue , composite number , chemistry , nanotechnology , organic chemistry , composite material , waste management , catalysis , engineering , photocatalysis
BACKGROUND A magnetic conjugated microporous polymer (MCMP) composite was designed with bromo groups of CMP and amino groups on the surface of Fe 3 O 4 nanoparticles that acted as promising adsorbents for wastewater treatment. Fe 3 O 4 nanoparticles were successfully bonded on the predesigned CMP material to form the MCMP by means of a new and simple nucleophilic substitution reaction in organic media. RESULTS The MCMP could be separated by applying an external magnetic field because of the Fe 3 O 4 nanoparticles. It exhibited sufficient dye adsorption for methylene blue (MB) with a high sorption capability of 869.43 mg g −1 in aqueous solutions. The recovery and reusability of MCMP were >70% after six cycles of desorption and regeneration, indicating that the MCMP had excellent cycle stability. The magnetization saturation strength of MCMP was 13.5 emu g −1 which was sufficient to be magnetically separated from wastewater using artificial magnetic fields. CONCLUSION The MCMP possessed excellent adsorption capacity and dispersibility, and good recyclability after banded with functionalized Fe 3 O 4 nanoparticles. The excellent properties of MCMP indicated that it could be used as an adsorbent with great application potential for quick separation of water pollutants such as dyes in wastewater treatment. © 2019 Society of Chemical Industry