Carboxymethyl-β-cyclodextrin conjugated magnetic nanoparticles as nano-adsorbents for removal of copper ions: Synthesis and adsorption studies

被引:455
作者
Badruddoza, A. Z. M. [1 ]
Tay, A. S. H. [1 ]
Tan, P. Y. [1 ]
Hidajat, K. [1 ]
Uddin, M. S. [1 ]
机构
[1] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119260, Singapore
关键词
Magnetic nanoparticles; Carboxymethyl-beta-cyclodextrin; Copper adsorption; Isotherms; Kinetic model; AQUEOUS-SOLUTION; HEAVY-METALS; ORGANIC-COMPOUNDS; CARBON NANOTUBES; CHITOSAN; FE3O4; WATER; ACID; CU(II); LEAD;
D O I
10.1016/j.jhazmat.2010.10.029
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A novel nano-adsorbent, carboxymethyl-beta-cyclodextrin modified Fe(3)O(4) nanoparticles (CMCD-MNPs) is fabricated for removal of copper ions from aqueous solution by grafting CM-beta-CD onto the magnetite surface via carbodiimide method. The characteristics results of FTIR, TEM, TGA and XPS show that CM-beta-CD is grafted onto Fe(3)O(4) nanoparticles. The grafted CM-beta-CD on the Fe(3)O(4) nanoparticles contributes to an enhancement of the adsorption capacity because of the strong abilities of the multiple hydroxyl and carboxyl groups in CM-beta-CD to adsorb metal ions. The adsorption of Cu(2+) onto CMCD-MNPs is found to be dependent on pH and temperature. Adsorption equilibrium is achieved in 30 min and the adsorption kinetics of Cu(2+) is found to follow a pseudo-second-order kinetic model. Equilibrium data for Cu(2+) adsorption are fitted well by Langmuir isotherm model. The maximum adsorption capacity for Cu(2+) ions is estimated to be 47.2 mg/g at 25 degrees C. Furthermore, thermodynamic parameters reveal the feasibility, spontaneity and exothermic nature of the adsorption process. FTIR and XPS reveal that Cu(2+) adsorption onto CMCD-MNPs mainly involves the oxygen atoms in CM-beta-CD to form surface-complexes. In addition, the copper ions can be desorbed from CMCD-MNPs by citric acid solution with 96.2% desorption efficiency and the CMCD-MNPs exhibit good recyclability. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:1177 / 1186
页数:10
相关论文
共 56 条
[1]   Potato peels as solid waste for the removal of heavy metal copper(II) from waste water/industrial effluent [J].
Aman, Tehseen ;
Kazi, Asrar Ahmad ;
Sabri, Muhammad Usman ;
Bano, Qudsia .
COLLOIDS AND SURFACES B-BIOINTERFACES, 2008, 63 (01) :116-121
[2]   Synthesis of carboxymethyl-β-cyclodextrin conjugated magnetic nano-adsorbent for removal of methylene blue [J].
Badruddoza, A. Z. M. ;
Hazel, Goh Si Si ;
Hidajat, K. ;
Uddin, M. S. .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2010, 367 (1-3) :85-95
[3]   Synthesis and characterization of β-cyclodextrin-conjugated magnetic nanoparticles and their uses as solid-phase artificial chaperones in refolding of carbonic anhydrase bovine [J].
Badruddoza, A. Z. M. ;
Hidajat, K. ;
Uddin, M. S. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2010, 346 (02) :337-346
[4]   Fast removal of copper ions by gum arabic modified magnetic nano-adsorbent [J].
Banerjee, Shashwat S. ;
Chen, Dong-Hwang .
JOURNAL OF HAZARDOUS MATERIALS, 2007, 147 (03) :792-799
[5]   Cyclodextrin conjugated magnetic colloidal nanoparticles as a nanocarrier for targeted anticancer drug delivery [J].
Banerjee, Shashwat S. ;
Chen, Dong-Hwang .
NANOTECHNOLOGY, 2008, 19 (26)
[6]   Synthesis and properties of supramolecular systems based on silica [J].
Belyakova, LA ;
Kazdobin, KA ;
Belyakov, VN ;
Ryabov, SV ;
de Namor, AFD .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 283 (02) :488-494
[7]   Simultaneous elution of heavy metals and organic compounds from soil by cyclodextrin [J].
Brusseau, ML ;
Wang, XJ ;
Wang, WZ .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (04) :1087-1092
[8]  
Bystrzejewski M., 1994, CARBON, V24, P19
[9]   Synthesis of variable-sized nanocrystals of Fe3O4 with high surface reactivity [J].
Caruntu, D ;
Caruntu, G ;
Chen, Y ;
O'Connor, CJ ;
Goloverda, G ;
Kolesnichenko, VL .
CHEMISTRY OF MATERIALS, 2004, 16 (25) :5527-5534
[10]   Preparation and adsorption properties of monodisperse chitosan-bound Fe3O4 magnetic nanoparticles for removal of Cu(II) ions [J].
Chang, YC ;
Chen, DH .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 283 (02) :446-451