Synthesis and Characterization of Ti–Fe Oxide Nanomaterials: Adsorption–Degradation of Methyl Orange Dye

Abebe, Buzuayehu; Murthy, H. C. Ananda; Dessie, Yilkal

doi:10.1007/s13369-019-04328-1

Cited by 22 publications

(8 citation statements)

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“…Therefore, the prepared material is a blend of the individual phases of binary oxide that co-exist in one substance. These results are similar to other binary oxides in previous studies [ 31 , 32 , 33 , 34 ]. The weight percentage of Fe 3 O 4 -MgO binary metal oxide calculated was found to be 63.4% and 36.6%, respectively.…”

Section: Resultssupporting

confidence: 93%

Evaluation of Fe-Mg Binary Oxide for As (III) Adsorption—Synthesis, Characterization and Kinetic Modelling

et al. 2021

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Nanotechnology has received much attention in treating contaminated waters. In the present study, a facile co-precipitation method was employed to synthesize a novel iron and magnesium based binary metal oxide using a stoichiometrically fixed amount of FeNO3.9H2O and MgNO3.6H2O in a proportion of molar concentration 1:1 and was later evaluated in removing As (III) from contaminated waters. Characterization of the prepared nanomaterial was done using X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy Dispersive X-Ray Analysis (EDAX) and ultraviolet–visible spectrophotometry (UV-VIS). Experimental studies on batch scale were carried out, examining the effect of varying initial concentrations of metal, adsorbent dosage, application time and initial pH on removal efficiency. Arsenic removal increased on increasing adsorbent dosage (0.1–1 g/L) but trend reversed on increasing initial arsenic concentration attaining qmax of 263.20 mg/g. Adsorption was quite efficient in pH range 4–8. Freundlich fitted better for adsorption isotherm along with following Pseudo-2nd order kinetics. The reusability and effect of co-existing ions on arsenic adsorption, namely SO42−, CO32− and PO43− were also explored with reusability in 1st and 2nd cycles attained adsorptive removal up to 77% and 64% respectively. The prepared nano-adsorbent showed promising results in terms of high arsenic uptake (qmax of 263.20 mg/g) along with facile and cost-effective synthesis. Thus, the co-precipitation technique used in this work is a simple one step procedure without any use of any precursor as compared to most of the other procedures used for synthesis.

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Section: Resultssupporting

confidence: 93%

Evaluation of Fe-Mg Binary Oxide for As (III) Adsorption—Synthesis, Characterization and Kinetic Modelling

et al. 2021

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“…The distinct experimental diffraction peaks for both samples show the powders' high quality and crystallinity. [49,50] The average crystallite size (D) was calculated using Scherrer's formula (Equation 4) for CuOÀ ZnO hybrid NC. D is discovered to be in the 25-30 nm range.…”

Section: Characterizationmentioning

confidence: 99%

“…The hexagonal wurtzite structure is present in the (100), (002), (101), (102), (110), (103), (200), and (112) planes, as seen in Figure1. The distinct experimental diffraction peaks for both samples show the powders' high quality and crystallinity [49,50]. The average crystallite size (D) was calculated using Scherrer's formula (Equation4) for CuOÀ ZnO hybrid NC.…”

mentioning

confidence: 99%

Bimetallic CuO−ZnO Hybrid Nanocomposite Materials for Efficient Remediation of Environmental Pollutants

Rudresha

Hussain

Ravikumar³

et al. 2023

ChemistrySelect

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Pure CuO and 2‐Dimentional CuO−ZnO nanocomposites (NCs) were effectively prepared by an ultrasound‐assisted probe sonication route for different ratios of CuO and ZnO, and the multifunctional properties were investigated by the application of the advanced methods. XRD (X‐ray diffraction) patterns revealed a crystallite size (D) range of 25 to 31 nm for pure CuO and CuO−ZnO NCs. According to calculations, the energy band gap value (Eg) for the NCs is between 2.15 and 2.48 eV. Under UV light irradiation, the photocatalytic degradation of pure CuO and CuO−ZnO NCs on Direct Green (DG) and Fast Blue (FB) dyes was assessed. 60 mg of the catalyst was added to 20 ppm solutions of DG and FB dye. The stock solution of the dyes was prepared 10, 15, 20 and 25 ppm of 250 ml dye solution. Electrochemical analysis using cyclic voltammetry revealed improved redox potential output in the electrode crafted with graphite powder in 0.1 N HCl electrolyte solution. These NCs were used because of their capacity to detect an extremely dangerous chemical like arsenic. The constructed electrode‘s lowest limit of detection was determined to be 110–3 mol/L. In general, vertical linearity was seen in all of the prepared nano‐electrodes, especially above 150 ohms with real axis for pure CuO but beyond 100 ohms for doped electrodes. Based on our study, we conclude that the CuO and ZnO NCs, containing 10 % of ZnO, were the most effective photocatalyst for DG and FB dyes and electrochemical sensor for Arsenic.

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“…Furthermore, the adsorption isotherm test was conducted using MBD concentration of 1,5,10,15,20,25,30, and 35 mg l . 1 For a proper understanding of the adsorption process, the adsorption isotherm models (equations (3)-(8)) and adsorption kinetics models (equations (9)-(13)) were used [21,22].…”

Section: Batch Adsorption Studiesmentioning

confidence: 99%

Porous PVA/Zn–Fe–Mn oxide nanocomposites: methylene blue dye adsorption studies

Abebe

Murthy

Zereffa

et al. 2020

Mater. Res. Express

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Adsorption is one of the noble techniques for remediation of organic and inorganic pollutants. The poly (vinyl alcohol) supported sol-gel and self-propagation routes have been used for the synthesis of porous ternary metal oxides nanocomposites. The optical, chemical bonding, crystallinity, morphological, textural, and electrochemical properties of the synthesized materials were characterized by DRS-UV-vis, FT-IR, XRD, SEM/EDX and TEM/HRTEM/SAED, BET, and CV/EIS techniques, respectively. The characterization of the nanocomposites confirmed their porous nature, high surface area, and better electrochemical properties. The synthesized nanomaterials were tested for the adsorption property of methylene blue dye. Important parameters such as the amount of PVA supported ternary metal oxide nanocomposite, pH of the solution, contact time, and concentration of methylene blue dye were optimized. For further understanding of the adsorption process, the adsorption isotherms and adsorption kinetics models were used. The adsorption tests revealed the presence of the chemisorption type of the adsorption process. several advantageous properties [8,9]. Besides, its hydroxyl groups on the carbon chain backbone act as a source for the formation of hydrogen bonding and enhances the formation of the nanocomposite [10]. As confirmed by various researchers [11][12][13][14][15][16], around 250, 300, 390, 400, and 400°C-500°C; the intramolecular decomposition, amorphous portion degradation, intermolecular breakdown, decaying of the crystalline portion of PVA, and formation of pure metal oxides had occurred, respectively.From methods used for the synthesis of inorganic nanomaterials/nanocomposites, the top-down and bottom-up approaches are common. Compared to the former, the latter is more popular and is considered as a promising route to control the growth, morphology, and properties of the nanomaterials. From the bottom-up chemical approaches; the hydrothermal, microemulsion, wet impregnation, sonochemical, ultrasonicmicrowave, electrochemical/electroless deposition, and spray-pyrolysis techniques are successfully applied. However, it is reported that these techniques follow special operating-conditions, long reaction time, lowthrough-put, and expensive procedure [17]. Therefore, it is essential to use effective and economically feasible methods such as sol-gel, precipitation, and impregnation. Furthermore, during the synthesis process, avoiding solvents that cause cancer and has mutagenic properties should also be taken into consideration [18].Considering all the mentioned aspects, this work was aimed to synthesize PVA supported ternary metal oxide nanocomposite (PVA-TMONC), using a simple and green sol-gel-self propagation technique. The methylene blue dye (MBD) adsorption efficiency of the synthesized PVA-TMONC was also tested. The physical properties of synthesized materials were characterized by critical analytical techniques. Using the Langmuir, Freundlich, Dubinin-Radushkevich (D-RK), Temkin, Flory-Huggins (FH), and Fowler-Gugge...

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Synthesis and Characterization of Ti–Fe Oxide Nanomaterials: Adsorption–Degradation of Methyl Orange Dye

Cited by 22 publications

References 70 publications

Evaluation of Fe-Mg Binary Oxide for As (III) Adsorption—Synthesis, Characterization and Kinetic Modelling

Evaluation of Fe-Mg Binary Oxide for As (III) Adsorption—Synthesis, Characterization and Kinetic Modelling

Bimetallic CuO−ZnO Hybrid Nanocomposite Materials for Efficient Remediation of Environmental Pollutants

Porous PVA/Zn–Fe–Mn oxide nanocomposites: methylene blue dye adsorption studies

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