Metal-organic framework [Cu3(BTC)2(H2O)3] for the adsorption of methylene blue from aqueous solution

Ling Li; Jun Cheng Li; Zhuang Rao; Gong Wu Song; Bin Hu
November 2014
Desalination & Water Treatment;Nov2014, Vol. 52 Issue 37-39, p7332
Academic Journal
The adsorpion of methylene blue (MB) from aqueous solution on a highly porous metal-organic framework material [Cu3(BTC)2(H2O)3] was studied in conjunction with the adsorption isotherm, kinetics and regenerate of the sorbent. The adsorption isotherms of MB on [Cu3(BTC)2(H2O)3] followed both the Freundlich isotherm and the Langmuir adsorption isotherm. Adsorption kinetics was determined from the experimental data, and the results showed that the adsorption obeyed a pseudo-second-order kinetics. The best oscillate time and the best [Cu3(BTC)2(H2O)3] amount were discussed, and [Cu3(BTC)2(H2O)3] gave high adsorption in only 5 min. The used [Cu3(BTC)2(H2O)3] could be regenerated by glycol solution, thus recycled. SEM image and FT-TR spectra of recycled [Cu3(BTC)2(H2O)3] after different adsorption times were compared. The high adsorption capacity and excellent reusability make [Cu3(BTC)2(H2O)3] attractive for the removal of MB from aqueous solution.


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