Structural peculiarities of TiO2 and Pt/TiO2 catalysts for the photocatalytic oxidation of aqueous solution of Acid Orange 7 Dye upon ultraviolet light

In the present study, the adsorption of acid orange 7 (AO7) dye from aqueous solution by sugarcane bagasse (SB) and cetylpyridinium bromide (CPBr) modified sugarcane bagasse (SBC) was examined. SBC was prepared by reacting SB with different concentrations (0.1, 1.0 and 4.0 mM) of cationic surfactant, CPBr. The SB and SBC were characterized using Fourier transform infrared (FTIR) spectroscopy. The adsorption experiments were carried out in a batch mode. The effect of initial AO7 concentrations (5-1000 mg/L), initial CPBr concentrations and pH of AO7 solution (2-9) on the adsorption capacity of SB and SBC were investigated. The experimental adsorption data were analyzed using Langmuir and Freundlich isotherm models. The adsorption of AO7 onto SB and SBC followed Freundlich and Langmuir isotherm models, respectively. The maximum uptake of AO7 was obtained by SBC4.0 (SB treated with 4.0 mMCPBr) with the adsorption capacity of 144.928 mg/g. The highest AO7 removal was found to be at pH 2 and 7 for SB and SBC, respectively. As a conclusion, sugarcane bagasse modified with CPBr can become an alternative adsorbent for the removal of anionic compounds in aqueous solution.

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Osmotic coefficients of C.I. Acid Orange 7 in aqueous solution and in the presence of simple electrolyte

Dyes and Pigments ◽

10.1016/s0143-7208(96)00099-x ◽

1997 ◽

Vol 35 (2) ◽

pp. 165-169 ◽

Cited By ~ 8

Author(s):

S. Bračko ◽

J. Špan

Keyword(s):

Aqueous Solution ◽

Osmotic Coefficients ◽

Acid Orange 7 ◽

Acid Orange

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Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2015.06.016 ◽

2015 ◽

Vol 31 ◽

pp. 124-131 ◽

Cited By ~ 32

Author(s):

Behzad Heibati ◽

Susana Rodriguez-Couto ◽

Nurdan Gamze Turan ◽

Okan Ozgonenel ◽

Ahmad B. Albadarin ◽

...

Keyword(s):

Aqueous Solution ◽

Acid Orange 7 ◽

Pumice Stone ◽

Acid Orange

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Fe-based MOFs for efficient adsorption and degradation of acid orange 7 in aqueous solution via persulfate activation

Applied Surface Science ◽

10.1016/j.apsusc.2016.02.037 ◽

2016 ◽

Vol 369 ◽

pp. 130-136 ◽

Cited By ~ 123

Author(s):

Xianghui Li ◽

Weilin Guo ◽

Zhonghua Liu ◽

Ruiqin Wang ◽

Hua Liu

Keyword(s):

Aqueous Solution ◽

Acid Orange 7 ◽

Acid Orange ◽

Persulfate Activation

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Removal of Acid Orange 7 from Aqueous Solution by Metal-Organic Frameworks

Crystals ◽

10.3390/cryst9010017 ◽

2018 ◽

Vol 9 (1) ◽

pp. 17 ◽

Cited By ~ 12

Author(s):

Sungwon Yoon ◽

James Calvo ◽

Monica So

Keyword(s):

Aqueous Solution ◽

Hydrogen Bonding ◽

Adsorption Capacity ◽

Metal Clusters ◽

Metal Organic Frameworks ◽

Acid Orange 7 ◽

Acid Orange ◽

Zeta Potentials ◽

Metal Organic ◽

Capacity Data

We investigated the removal of a harmful anionic dye, acid orange 7 (AO7), from aqueous solution using metal-organic frameworks (MOFs). We prepared four different MOFs (ZIF-8, ZIF-67, UiO-66, UiO-66-NH2) by solvothermal reactions and then tested their adsorption of AO7. Infrared spectra and adsorption capacity data confirmed the removal of AO7 from aqueous solution. The factors we investigated affecting adsorption capacity include variation of the organic linkers and metal clusters of the MOFs. Our results suggest that the hydrogen bonding, π–π interactions, and zeta potentials facilitate the removal of AO7 from water. Of the four MOFs examined, ZIF-67 exhibited the highest adsorption capacity of AO7 and can be regenerated easily.

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