Dendrimer assisted dye-removal: A critical review of adsorption and catalytic degradation for wastewater treatment

Wazir, Muhammad B.; Daud, Muhammad; Ali, Faheem; Al‐Harthi, Mamdouh A.

doi:10.1016/j.molliq.2020.113775

Cited by 106 publications

(39 citation statements)

References 109 publications

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“…Numerous types of materials such as activated carbon [ 5 ], zeolites [ 6 ], lignocellulosic materials [ 7 ], clays [ 8 ], double-layered hydroxides [ 9 ], metal-organic networks (MOFs) [ 10 ], magnetic materials [ 11 ], metal oxides [ 12 ], graphene oxide [ 13 ], silica [ 14 ], polymeric materials [ 15 , 16 ], carbon nanotubes [ 17 ], agricultural wastes [ 18 ], chitosan [ 19 ], food-processing by-products [ 20 ], clays [ 21 ], dendritic polymers [ 22 ], and hydroxyapatite based materials [ 23 ] were applied as dye adsorbents in synthetic aqueous solutions and industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

et al. 2021

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(1) Background: A comparative research study to remove Congo Red (CR) and Methyl Orange (MO) from single and binary solutions by adsorption onto cobalt ferrite (CoFe2O4) and cobalt ferrite–chitosan composite (CoFe2O4-Chit) prepared by a simple coprecipitation method has been performed. (2) Methods: Structural, textural, morphology, and magnetic properties of the obtained magnetic materials were examined by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, N2 adsorption–desorption analysis, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and magnetic measurements. The optimal operating conditions of the CR and MO removal processes were established in batch experiments. The mathematical models used to describe the processes at equilibrium were Freundlich and Langmuir adsorption isotherms. (3) Results: Cobalt ferrite–chitosan composite has a lower specific surface area (SBET) and consequently a lower adsorption capacity than cobalt ferrite. CoFe2O4 and CoFe2O4–Chit particles exhibited a superparamagnetic behavior which enabled their efficient magnetic separation after the adsorption process. The research indicates that CR and MO adsorption onto prepared magnetic materials takes place as monolayer onto a homogeneous surface. According to Langmuir isotherm model that best fits the experimental data, the maximum CR/MO adsorption capacity is 162.68/94.46 mg/g for CoFe2O4 and 15.60/66.18 mg/g for CoFe2O4–Chit in single solutions. The results of the kinetics study revealed that in single-component solutions, both pseudo-first-order and pseudo-second-order kinetics models represent well the adsorption process of CR/MO on both magnetic adsorbents. In binary solutions, adsorption of CR/MO on CoFe2O4 better follows the pseudo-second-order kinetics model, while the kinetic of CR/MO adsorption on CoFe2O4–Chit is similar to that of the dyes in single-component solutions. Acetone and ethanol were successfully used as desorbing agents. (4) Conclusions: Our study revealed that CoFe2O4 and CoFe2O4–Chit particles are good candidates for dye-contaminated wastewater remediation.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

et al. 2021

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“…The transformed into a semi-oxidized radical by electron injection into the TiO2 conduction band (Cai et al, 2020). The second mechanism dyes was photodegraded process, where the dye compounds connect with the hydrogen peroxide agents formed, and with the electron-hole pairs created because of band-edge excitation, resulting in dye oxidation and reduction directly (Wazir et al, 2020). Titanium dioxide nanotubes have been identified to become a strongly efficient agent when used on activated approval, with catalysts indicated high removal patterns of more azo dyes (Chen et al ., 2020).…”

Section: Application Of Tio2 Nanotubes Modification As a Photocatalyst For Dyes Wastewater Treatmentmentioning

confidence: 99%

Recent Development and Application of TiO2 Nanotubes Photocatalytic Activity for Degradation Synthetic Dyes – A Review

Hasanah

Kustiningsih

Slamet

et al. 2021

J. Rekayasa Kim. Lingkung.

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Synthetic dyes waste from textile industries, produce of the problematic pollutants in wastewater. TiO2 based photocatalysis are materials that exhibit excellent absorption behavior for organic compounds in wastewater due it properties including nontoxicity, high photocatalysis degradation ability, and chemical stabilities. However, several challenges exist regarding TiO2 nanotubes pure applications for dyes degradation such as poor affinity, high band gap energy, and difficulty of recovery and easy to recombination so it would decrease effectiveness of the photocatalysis process. Therefore, more design and optimization testing need to be conducted on the treatment conditions in order to reach higher removal efficiencies with lower costs. The modified physical properties by adding metal dopant, nonmetal, and sensitizer significantly enhanced photocatalysis activity. These parameters, which affect photocatalysis activity on degrade dyes waste pollutants, are discussed in the current review. As a result, the photocatalysis becomes more expected, and encourages to further research development. Keywords: TiO2, nanotubes, degradation, synthetic, dyes

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“…Specifically, thanks to their ability to envelop molecules, dendritic polymers have been proved to be ideal supports for the fabrication of colloidal solutions imparting higher chemical stability, increased solubility, and thus enhanced catalytic properties [6]. The grafting of dendrimers on soluble nanoparticles surfaces is markedly advantageous since it enables the control of the size and site of the interfacial reaction, [61][62][63]. Current literature proves the successful formation of several metal nanoparticles, such as Pt, Pd, Ag, Cu, Au, Ru, and Rh, encapsulated in dendrimers by following the colloid template synthetical method [64,65].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

et al. 2022

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Radially polymerized dendritic compounds are nowadays an established polymer category next to their linear, branched, and cross-linked counterparts. Their uncommon tree-like architecture is characterized by adjustable internal cavities and external groups. They are therefore exceptional absorbents and this attainment of high concentrations in their interior renders them ideal reaction media. In this framework, they are applied in many environmentally benign implementations. One of the most important among them is water purification through pollutant decomposition. Simple and composite catalysts and photo-catalysts containing dendritic polymers and applied in water remediation will be discussed jointly with some unconventional solutions and prospects.

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Dendrimer assisted dye-removal: A critical review of adsorption and catalytic degradation for wastewater treatment

Cited by 106 publications

References 109 publications

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

Recent Development and Application of TiO2 Nanotubes Photocatalytic Activity for Degradation Synthetic Dyes – A Review

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

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