Supporting Information
Facile synthesis of silver bromide-based nanomaterials and
their efficient and rapid selective adsorption mechanisms
towards anionic dyes
Liang Tang,† Jia-jun Wang,† Liang Wang,*,‡ Cheng-tao Jia,† Geng-xin Lv,†,§ Ning Liu,
⊥
†
and Ming-hong Wu*,†
Shanghai Institute of Applied Radiation, Shanghai University, 333 Nanchen Rd.,
Shanghai 200444, P. R. China
‡
Institute of Nanochemistry and Nanobiology, Shanghai University, 99 Shangda Rd.,
Shanghai 200444, P. R. China
§
Division of Interfacial Water and Key Laboratory of Interfacial Physics and
Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences,
2019 Jialuo Rd., Shanghai 201800, P. R. China
⊥
School of Environment and Architecture, University of Shanghai for Science and
Technology, 516 Jungong Rd., Shanghai 200093, P. R. China
Author information
* Corresponding Authors. Tel: +86-66135276, e-mail: [email protected] (L. Wang).
Tel: +86-66137801, e-mail: [email protected] (M. H. Wu).
S1
Table S1. Molecular structures of the target four anionic dyes (OG, IC, MO and AR-18) and two cationic dyes (RhB and MB)
Anionic dyes
Cationic dyes
Orange G (C.I. 16230)
Chemical Formula: C16H10N2Na2O7S2
Molecular Weight: 452.37
λabs: 477 nm
Acid Red 18 (C.I. 16255)
Chemical formula: C20H11N2Na3O10S3
Molecular Weight: 604.47
λabs: 509 nm
Rhodamine B (C.I. 45170)
Chemical Formula: C28H31ClN2O3
Molecular Weight: 479.01
λabs: 553 nm
Indigo Carmine (C.I. 73015)
Chemical Formula: C16H8N2Na2O8S2
Molecular Weight: 466.35
λabs: 608 nm
Methyl Orange (C.I. 13025)
Chemical Formula: C14H14N3NaO3S
Molecular Weight: 327.33
λabs: 464 nm
Methylene Blue (C.I. 52015)
Chemical Formula: C16H18ClN3S
Molecular Weight: 319.85
λabs: 630 nm
S2
Table S2. Comparisons of adsorption capacity towards to AR-18 among various nanoadsorbents
Adsorbents
AgBr-AgBr/CTAB
Uptake(mg g-1)
Contact time
Reference
298.28
30min
Present study
140
40min
1
Surfactant-modified natural zeolite
20.42
100min
2
Bentonite based composite
69.8
24h
3
Nanochitosan emulsion
828.0
21days
4
Fe3O4@GPTMS@P-Lys
S3
Figure S1. Size distribution of AgBr-AgBr/CTAB nanomaterials before and after adsorption.
S4
Figure S2. Images of the smart and fast selective adsorption of (a) IC from IC/RhB (Mixture-1), (b)
OG form OG/MB (Mixture-2) and (c) OG from OG/RhB (Mixture-3).
S5
Figure S3. Images of the smart and fast selective adsorption of the UV-Vis spectra of OG/MB
mixture before and after adsorption.
S6
Figure S4. (a) Molecular modeling pictures of AR-18, (b) and (f) LUMO of AR-18 molecules and
possible adsorption sites between AR-18 and AgBr. (c), (d) and (e) HOMO of AR-18 molecules and
possible adsorption sites between AR-18 and AgBr.
S7
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poly-lysine for efficient removal of anionic dyes from water. Chemical Engineering Journal 2015, 262,
313-318.
(2) Mirzaei, N.; Hadi, M.; Gholami, M.; Fard, R. F.; Aminabad, M. S., Sorption of acid dye by
surfactant modificated natural zeolites. Journal of the Taiwan Institute of Chemical Engineers 2016, 59,
186-194.
(3) Qiao, S.; Hu, Q.; Haghseresht, F.; Hu, X.; Lu, G. Q., An investigation on the adsorption of acid dyes
on bentonite based composite adsorbent. Separation and Purification Technology 2009, 67, 218-225.
(4) Cheung, W. H.; Szeto, Y. S.; McKay, G., Enhancing the adsorption capacities of acid dyes by
chitosan nano particles. Bioresource technology 2009, 100, 1143-8.
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