Synthesis of 3D hierarchical porous iron oxides for adsorption of Congo red from dye wastewater

Zeng, Jia; Liu, Jianhong; Wang, Qiuze; Li, Shengbiao; Qin, Qi; Zhu, Rong

doi:10.1016/j.jallcom.2014.10.125

Cited by 70 publications

(19 citation statements)

References 47 publications

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“…Multiple metal oxide nanocomposites not only depict their original paternal characteristics but also enhance their adsorption capability in comparison with single metal oxide nanocomposite. Jia et al ., 2015 has explored the adsorption capacities of α‐Fe 2 O 3 , Fe 2 O 4 , ϒ‐Fe 2 O 3 nanoparticles for adsorption of congo red dye and maximum adsorption capacity of 139.86, 84.96, 69.35 mg/g have been observed respectively. Yu et al, 2017 has reported significant dye uptake capacity (103.46 mg/g) of mesoporous ZrO 2 fibers for the removal of congo red dye.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of mixed phase calcium ferrite and zirconia nanocomposite for abatement of methyl orange dye from aqua matrix: Optimization of process parameters

Bhowmik

Debnath

Saha

2018

Applied Organom Chemis

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In this study, mixed phase of CaFe 2 O 4 and ZrO 2 magnetic nanocomposite (CaF-ZO-MNC) was fabricated through facile co-precipitation method and was explored for abatement of methyl orange (MO) dye from aqua matrix. X-ray diffraction (XRD) pattern of the synthesized CaF-ZO-MNC depicted significant diffraction peaks of ZrO 2 and CaFe 2 O 4 nanoparticles ensured the crystalline nature of the material. The coexistence of ZrO 2 and CaFe 2 O 4 nanoparticles in the composite increased the BET surface area (95.32m 2 /g) and improves its physicochemical properties as an adsorbent. Enhanced adsorption capacity towards MO dye was found to be 370.37 mg/g from Langmuir model, which is higher than standalone nanoscale Fe, Ca, and Zr metal oxide nanoparticles. The equilibrium adsorption data were found to follow Langmuir isotherm and the adsorption process followed second order kinetic model strictly. Response surface methodology (RSM) was utilized for optimizing the experimental conditions for maximizing the MO dye removal (%) with desirability function approach. Four factors five levels central composite design was implemented for RSM study and the simultaneous interaction of process variables on dye removal efficiency was studied by 3D response surface plots. Maximum MO dye removal of 98.92% was determined with MO dye concentration of 22 mg/L, adsorbent dose of 0.54 g/L, contact time of 25 min at recation temperature of 30°C.KEYWORDS adsorption capacity, kinetic and isotherm study, metal oxide nanocomposite, optimization, toxic dye

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Section: Introductionmentioning

confidence: 99%

Fabrication of mixed phase calcium ferrite and zirconia nanocomposite for abatement of methyl orange dye from aqua matrix: Optimization of process parameters

Bhowmik

Debnath

Saha

2018

Applied Organom Chemis

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“…Therefore, from the health and environmental point of view, the importance of CR removal from the wastewaters by cost-effective approaches has been highlighted [6]. Different physical and chemical methods have been applied in order to eliminate dyes from effluents featuring chemical precipitation [7], chemical oxidation [8], adsorption [9], microbial or enzymatic treatment [10], and photocatalysis [11], which among them some methods like adsorption on mineral composites [12], sorbents made by natural materials [13,14], and simple dual molecularly imprinted polymers (MIPs) [15] attempted to remove or analyze CR. Although, none of these methods can completely remove dye molecules from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Molecularly Imprinted Polymer on Magnetic Core-Shell Silica Nanoparticles for Recognition of Congo Red

Harsini¹,

Ansari²,

Kazemipour³

2018

Eurasian J Anal Chem

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The extraction of Congo red from aqueous media is reported by a synthesized magnetic molecularly imprinted polymer. This polymer was prepared by coating of synthesized molecularly imprinted polymer on pre-prepared amino-modified Fe3O4 nanoparticles (Fe3O4@NH2-SiO2) surface. Coating process was done through the chemical coprecipitation method by use of acrylamide as functional monomer, N, N' methylenebisacrylamid as cross-linking agent, ammonium persulfate as initiator and N, N, N', N'-tetramethylethylenediamine as co-initiator in the presence of Congo red. The polymer was characterized by Field emission scanning electron microscope, Fourier transform infrared spectrometer, vibrating sample magnetometer, X-ray diffraction, and re-binding experiments. In addition, more investigations were performed including isotherms, adsorption kinetics, competitive adsorption and reusability. The results proved the sensitivity of the prepared polymer toward magnetic field. Accordingly, it can be easily removed by an external magnet. It demonstrated effective recognition selectivity as well as ability to simultaneous separation and enrichment of Congo red.

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“…Traditionally, many physicochemical methods have been utilized to remove these pollutants from waste water, including adsorption, coagulation‐flocculation, biological treatment, and photocatalysis . Among all the approaches, adsorption has become the most popular technique for dye removal due to its effectiveness, operational simplicity, environmental friendliness, low cost, and energy consumption . Many conventional adsorbents have been used to remove pollutants from wastewater, such as activated carbon, layered double hydroxides, metal oxides, and bentonite .…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6]27 Among all the approaches, adsorption has become the most popular technique for dye removal due to its effectiveness, operational simplicity, environmental friendliness, low cost, and energy consumption. 1,[7][8][9][10]21,22,[28][29][30] Many conventional adsorbents have been used to remove pollutants from wastewater, such as activated carbon, layered double hydroxides, metal oxides, and bentonite. 1,[11][12][13][14]18,21,22 Most of them have high cost, low adsorption capability, or regeneration efficiency.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Al‐Doped ZnO as a Prospective High Adsorption Material

Qin

Zhang

et al. 2016

J. Am. Ceram. Soc.

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This work demonstrates Al-doped ZnO adsorbents successfully synthesized by glucose-assisted solution combustion. The addition of glucose results in nanocomposite powders with highly fluffy network, mesoporous structure, high specific surface area, and physical properties, which in turn improve the adsorption properties. The adsorption performance of the material was studied, and the influence of Al doping concentration, adsorbents and methyl orange concentration in the solution were investigated. The addition of glucose increased the adsorption capacity of methyl orange onto Al-doped ZnO by over 2 times. The adsorption followed the Langmuir isotherm, was spontaneous and exothermic. Kinetic calculations show that the adsorption followed the pseudo-second-order model with a multistep diffusion process. Thermodynamic parameters indicate that the adsorption is a feasible, spontaneous, and exothermic process.

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Synthesis of 3D hierarchical porous iron oxides for adsorption of Congo red from dye wastewater

Cited by 70 publications

References 47 publications

Fabrication of mixed phase calcium ferrite and zirconia nanocomposite for abatement of methyl orange dye from aqua matrix: Optimization of process parameters

Fabrication of mixed phase calcium ferrite and zirconia nanocomposite for abatement of methyl orange dye from aqua matrix: Optimization of process parameters

Synthesis of Molecularly Imprinted Polymer on Magnetic Core-Shell Silica Nanoparticles for Recognition of Congo Red

Synthesis and Characterization of Al‐Doped ZnO as a Prospective High Adsorption Material

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