Synthesis and characterization of a novel amphoteric adsorbent coating for anionic and cationic dyes adsorption: Experimental investigation and statistical physics modelling

Azha, Syahida Farhan; Sellaoui, Lotfi; Shamsudin, Muhamad Sharafee; Ismail, Suzylawati; Bonilla-Petriciolet, Adrián; Lamine, Abdelmottaleb Ben; Erto, Alessandro

doi:10.1016/j.cej.2018.06.092

Cited by 69 publications

(21 citation statements)

References 51 publications

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“…The effects of the temperature on this parameter, displayed in Figure 9a, show that the values of n in all tested temperature are above unity, varying from 1.84 to 2.92. In consequence, this evidence implies a multi-molecular adsorption process of RhB molecules with an oblique orientation on WS 2 /WO 3 [40].…”

Section: Adsorption Isothermsmentioning

confidence: 79%

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Partial Oxidation Strategy to Synthesize WS2/WO3 Heterostructure with Enhanced Adsorption Performance for Organic Dyes: Synthesis, Modelling, and Mechanism

Wang

et al. 2020

Nanomaterials

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In this work, a facile oxidation strategy was developed to prepare novel tungsten disulfide/tungsten trioxide (WS2/WO3) heterostructures for adsorbing organic dyes efficiently by combining the hydrophilic property of WO3 and the superior dye affinity of WS2. The structural and elemental properties of the synthesized hybrid materials were systematically investigated, and the results demonstrated the retained flower-like morphology of the primitive WS2 and the successful introduction of WO3. Furthermore, surface properties such as a superior hydrophilicity and negative-charged potential were also demonstrated by a water contact angle characterization combined with a Zeta potential analysis. The performance of the obtained WS2/WO3 hybrid materials for removing Rhodamine B (RhB) from wastewater was evaluated. The results showed that the maximum adsorption capacity of the newly synthesized material could reach 237.1 mg/g. Besides, the adsorption isotherms were also simulated by a statistical physics monolayer model, which revealed the non-horizontal orientation of adsorbates and endothermic physical interaction. Finally, the adsorption mechanism and the recyclability revealed that the partial oxidation strategy could contribute to a higher adsorption capacity by modulating the surface properties and could be applied as a highly efficient strategy to design other transition metal dichalcogenides (TMDs) heterostructures for removing organic dyes from wastewater.

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Section: Adsorption Isothermsmentioning

confidence: 79%

“…Furthermore, a straightforward statistical physics model was utilized to fit the adsorption isotherms of RhB. The mathematical equation of the model is presented as follows [40]:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Partial Oxidation Strategy to Synthesize WS2/WO3 Heterostructure with Enhanced Adsorption Performance for Organic Dyes: Synthesis, Modelling, and Mechanism

Wang

et al. 2020

Nanomaterials

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“…Kono prepared amphoterous cellulose hydrogels for the removal of three anionic dyes with a maximum monolayer adsorption capacity of Acid Red 13 to 911 mg/g. Azha et al . developed a novel amphoteric composite coating via a facile in situ intercalative technique and used it for dye adsorption.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Xie

Pan

Xiao

et al. 2019

J of Applied Polymer Sci

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Conventional amphoteric and porous materials are often synthetic and polymer based; this tends to raise environmental concerns because of their poor biodegradability. To address this issue, novel natural-polymer-or amphoteric-modified cellulose and MOt (ACeOMt) composite beads with a typical mesoporous structure were developed in this study. These green-based porous beads, consisting of regenerated bagasse cellulose and oxalic acid modified montmorillonite (OMt), were successfully prepared by a facile coagulation method with fine calcium carbonate as a pore-forming agent. The beads with the best sphericity were obtained at a 1:1 weight ratio of cellulose to OMt. Scanning electron microscopy observation showed that ACeOMt possessed a smooth surface with abundant macropores. X-ray diffraction and thermogravimetric analysis characterizations demonstrated the success of the modification of montmorillonite and cellulose. The results of Brunauer-Emmett-Teller analysis indicate the presence of a typical mesoporous structure in the composite with a relatively high specific surface area. The resulting ACeOMt are expected to be biodegradable, nonhazardous, and applicable for various uses, including adsorption, chromatography, and soil remediation.

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“…There are many kinds of colour absorbing materials in the world. It has obvious advantages to select large-surface-area, porous and biodegradable fiber materials, which contain more groups that can combine with dyes, acting as colour absorbing materials [7][8][9]. Fibre materials have better in wastewater effectively, with the added advantage of the cost of decolourisation being low.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Kind of Non-Woven Viscose Colour Absorbing Material and Research of its Colour Absorption Properties

Wang

Liu

Rong

2019

Fibres and Textiles in Eastern Europe

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A non-woven viscose material was modified with self-made cationic gelatin protein auxiliary by the padding process. The material prepared was then used as an environmentally friendly colour absorbent for the decolourisation of dye wastewater. The effects of the sodium hydroxide swelling pretreatment process and cationic padding modification process on the colour absorption and decolourisation rate were discussed. Moreover an optimal preparation process for the colour-absorbing material was determined. This was as follows: In order to make the non-woven viscose material swell and improve the subsequent modification effect, first the non-woven viscose material was pretreated with an aqueous solution containing 50 g/l of sodium hydroxide, at room temperature, for 5 min. Then the material was padded in a mixed aqueous solution containing 80 g/l of cationic gelatin and 18 g/l of sodium hydroxide by means of a laboratory padder with two dips and two nips. After treatment, the material was dried and steamed for 4 min. Lastly the material was washed with water and dried. The results show that the colour-absorbing material prepared by this process has the advantages of a high colour absorption rate and high decolourisation percentage. And it could be applied to the decolourisation of printing and dyeing wastewater, or to prevent washed off dyestuff staining on light colour clothes in the process of laundry.

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Synthesis and characterization of a novel amphoteric adsorbent coating for anionic and cationic dyes adsorption: Experimental investigation and statistical physics modelling

Cited by 69 publications

References 51 publications

Partial Oxidation Strategy to Synthesize WS2/WO3 Heterostructure with Enhanced Adsorption Performance for Organic Dyes: Synthesis, Modelling, and Mechanism

Partial Oxidation Strategy to Synthesize WS2/WO3 Heterostructure with Enhanced Adsorption Performance for Organic Dyes: Synthesis, Modelling, and Mechanism

Preparation and characterization of amphoteric cellulose–montmorillonite composite beads with a controllable porous structure

Preparation of a Kind of Non-Woven Viscose Colour Absorbing Material and Research of its Colour Absorption Properties

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