Journal
JOURNAL OF SEPARATION SCIENCE
Volume 43, Issue 5, Pages 987-995Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201900957
Keywords
adsorbents; bisphenol A; mesoporous materials; molecularly imprinted polymers; wastewater treatment
Categories
Funding
- National Natural Science Foundation of China [21505026, 21275057, 51478196]
- Science and Technology Planning Project of Guangdong Province [2017A020212003, 2016A020215020]
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Selective removal of bisphenol A from wastewater is quite challenging primarily because of its low concentration and matrix complexity. To this end, according to the molecular structure of bisphenol A, we designed a functional monomer for the preparation of molecularly imprinted mesoporous silica using click chemistry reaction. The resultant bisphenol A imprinted mesoporous silica was characterized by transmission electron microscopy, small angle X-ray diffraction, and N-2 adsorption-desorption experiments. The results indicated that the bisphenol A imprinted mesoporous silica possessed a highly ordered periodic hexagonal mesostructure with the Brunauer-Emmett-Teller surface area of 944.28 m(2)/g. The bisphenol A imprinted mesoporous silica showed fast adsorption kinetics and the saturated adsorption capacity reached up to 88.6 mg/g at pH 6.5, and with relative selectivity factors ranged from 1.06 to 3.20. The adsorption efficiency of the bisphenol A imprinted mesoporous silica was above 97.96% after five extraction/elution cycles. The bisphenol A imprinted mesoporous silica was further applied to the selective removal of bisphenol A from real wastewater samples and showed great promise in practical applications.
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