In:
Chinese Journal of Chemistry, Wiley, Vol. 35, No. 5 ( 2017-05), p. 596-604
Abstract:
In the present work, novel dual‐functionalized hollow polymer particles ( DF‐HPP ) with high density of carboxylate and amino dual functional groups have been specially designed and fabricated to serve as high‐performance adsorbent for selective removal of basic dye (methylene blue, b ‐ MB , as a model dye). Due to both the high surface area and the extremely high density of carboxylate and amino groups, the DF‐HPPs exhibited excellent adsorption property for methylene blue ( b ‐ MB ), including high adsorption capacity, fast adsorption/desorption rates, unique pH ‐sensitivity and easy recovery. The equilibrium adsorption data of b ‐ MB on the DF‐HPPs were evaluated using Freundlich and Langmuir isotherm models, and the equilibrium isotherm was better fit with Langmuir model with a maximum adsorption capacity of 538.8 mg/g at pH 12. More interestingly, the DF‐HPPs showed a significant pH ‐dependent equilibrium adsorption capacity, which decreased dramatically from 516.1 mg/g to 24 mg/g as the solution pH decreased from 12 to 3. The dye‐adsorbed DF‐HPPs can be facilely and rapidly regenerated under mild condition (under weak acidic solution, pH 3, in 30 min) to recover both b ‐ MB and the DF‐HPPs , and the regenerated DF‐HPPs can be reused for dye removal with high efficiency, indicating the exceptional recyclability of the DF‐HPPs .
Type of Medium:
Online Resource
ISSN:
1001-604X
,
1614-7065
DOI:
10.1002/cjoc.201600681
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2144352-X
SSG:
6,25
