期刊
RSC ADVANCES
卷 8, 期 32, 页码 18118-18127出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra01887a
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资金
- CONICYT regional [R16F10013]
- Fondecyt [11160073]
- Centro de Investigacion de Polimeros Avanzados (CIPA), CONICYT Regional, GORE BIO-BIO [R17A10003]
- NIH [K22 CA174841, 1R15CA213232]
- [PAI 7815020005]
Herein, two kinds of nano-hydroxyapatite were synthesized from Clam and Magellan shell by wet chemical precipitation method. Mainly, carboxymethyl cellulose/acrylamide/nano-hydroxyapatite composite hydrogels were developed via a free-radical polymerization process and investigated as a sorbent for Acid Blue 113 (AB) from aqueous AB solution. The swelled and kinetic behaviours of hydrogels were investigated using a gravimetric method. The swelling properties of the CMC-AM-hydrogels were influenced by the calcium electrolytes (Ca2+) content in nano-hydroxyapatites. The diffusion coefficient value increased with the increase of nano-hydroxyapatite content in the CMC-AM/nHA-CS (0.22353-0.27681 cm(2) s(-1)) and CMC-AM/nHA-MS (0.22377-0.29737 cm(2) s(-1)) hydrogels. The mechanism of water diffusion was found to be anomalous transport. The CMC-AM/nHA-MS hydrogels showed high AB absorption efficiency and adsorption capacities. These results explained that the nano-hydroxyapatites of Magellan shells based hydrogels are attractive nanocomposite hydrogels for the adsorption of dye in the water purification applications.
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