Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 296, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2019.109990
Keywords
Covalent organic framework; Adsorption; Electron-rich heteroatoms; Indigo carmine; Iodine uptake
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Funding
- National Natural Science Foundation of China [21777149]
- Opening Project of Engineering Research Center of Nano-Geo Materials of Ministry of Education of China University of Geosciences [NGM2020KF015]
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Organic dye containing wastewater and nuclear waste have received more worldwide attention because of the significant environmental problems and the effects of radiation on health. Adsorption is considered to be an efficient, low-cost, and environmentally friendly method for pollutant removal. In this paper, we developed a novel covalent organic framework (BTT-TAPT-COF) adsorbent which contains abundant S and N active sites as well as extended pi-conjugated structure. This COF shows high crystallinity, large surface area, and thermal stability. Due to the porous feature, existence of electron-rich heteroatoms as well as the large pi-conjugated network structure, BTT-TAPT-COF exhibits excellent adsorptive performance for the removal of hazardous dye indigo carmine with an adsorption capacity of 547.33 mg g(-1) and rapid reversible volatile iodine uptake with an adsorption capacity of 276 wt%. After five cycles, BTT-TAPT-COF almost retains the same iodine adsorption capacity with the original adsorbent.
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