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Supplementary Material
Figure. S1. SEM images of (A) Fe3O4-VTMS and (B) MMIP.
Figure. S2. Binding selectivity of MMIP and MNIP for melamine and resorcinol.
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BA
Melamine Resorcinol0
5
10
15
20
25
30
MMIPMNIP
q e (m
g g-1
)
1 2 3 4 50
10
20
30
40
50
60
70
80
90
100Adsorption %Desorption %
Adso
rptio
n-de
sorp
tion
%
Cycle No.
Figure. S3. Adsorption –desorption cycle of melamine to MMIP.
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Table S1. Kinetic parameters for the binding of melamine to MMIP.
Concentration qe Pseudo-first-orderPseudo-second-order
(mg L-1) (mg g-1 )
exp. k1
(min-1) qe (mg g-1) R2 χ2 k2
(mg g-1 min-1)qe
(mg g-1) R2 χ2
10 4.79 1.42 4.705 0.81 0.04 0.582 4.779 0.97 0.004
25 12.33 0.268 11.79 0.91 0.50 0.034 12.53 0.99 0.053
50 24.20 0.190 23.25 0.93 0.76 0.012 25.04 0.99 0.310
100 46.30 0.142 45.82 0.91 3.0 0.005 49.55 0.98 1.82
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Table S2. Isotherm parameters for the binding of melamine to MMIP and MNIP.
Isotherm model Parameter R2 χ2
LangmuirMMIP Q0= 62.25
b = 0.0890.995 1.73
MNIP Q0 = 37.79b = 0.029
0.995 0.461
FreundlichMMIP KF = 9.376
n = 2.230.970 9.84
MNIP KF = 2.891n = 1.97
0.977 2.24
SipsMMIP qs= 64.85
bs =0.093ns = 1.120
0.994 1.99
MNIP qs = 38.85bs = 0.031ns = 1.03
0.994 0.546
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Table S3. Comparison of adsorption capacity of different adsorbents.
Adsorbent Functional
monomer
Adsorption
capacity
References
Selective molecularly
imprinted layer-coated silica
gel
Methacrylic acid 5.81 mg g-1 Cheng et al., 2013
Magnetic molecularly
imprinted polymer
Methacrylic acid 140.60 μg g-1 He et al., 2014
Molecularly imprinted
polymers
Methacrylic acid 9.26 mg g-1 Liu et al., 2015
Molecularly imprinted
polymer
9-vinylcarbazole 6.57 mg g-1 Yusof , Rahman,
Hussein and
Ibrahim, 2013
Magnetic molecularly
imprinted polymer
AMPS 62.25 mg g-1 This work
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