ars.els-cdn.com€¦  · Web viewSupplementary Material. A. B. Fig. ure. S1. SEM images of (A) Fe. 3 O 4-VTMS and (B) MMIP. MMIP Melamine Resorcinol 24.167999999999999 11.8 MNIP

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.

1

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.

2

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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