ars.els-cdn.com · Web viewIllustration of the possible interaction between CS-EGDE/TNP and RO16 dye: (a) electrostatic attraction, (b) dipole–dipole hydrogen bonding interactions,

Supplementary Materials

Synthesis steps of chitosan-ethylene glycol diglycidyl ether/TiO2 nanoparticles (CS-EGDE/TNP) composite

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20 40 60 80 90

Inte

nsiti

es (a

.u)

2 Theta (Degree)

30 50 70

4000 3500 3000 2500 2000 1500 1000 500

Tra

nsm

ittan

ce (%

)

Wavenumber (cm-1)

CS-EGDE/TNP

CS-EGDE/TNP+RO16

XRD pattern of (a) CS-EGDE/TNP, and (b) FTIR spectra of CS-EGDE/TNP and CS-EGDE/TNP after adsorption RO16 dye

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)a(

(b)

Element Weight% Atomic% C K 11.14 40.95 O K 39.53 35.79 Ti K 49.33 23.26 Totals 100.00

(a)

Element Weight% Atomic% C K 12.09 53.45 O K 34.83 40.73 Ti K 53.08 5.82 Totals 100.00

(b)

SEM images and EDX spectra of (a) CS-EGDE/TNP and (b) CS-EGDE/TNP after RO16 adsorption

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Illustration of the possible interaction between CS-EGDE/TNP and RO16 dye: (a) electrostatic attraction, (b) dipole–dipole hydrogen bonding interactions, (c) Yoshida H-bonding, and (d) n-π stacking interactions

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