Effect of a pH-controlled co-precipitation process on rhodamine B adsorption of MnFe<sub>2</sub>O<sub>4</sub> nanoparticles

Lamdab, Umaporn; Wetchakun, Khatcharin; Wetchakun, Natda

doi:10.1039/c7ra13570j

Cited by 34 publications

(12 citation statements)

References 75 publications

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“…The adsorption band slightly shifted, and the obtained bands are found at 2977, 1685, 1586, 1549, 1389, 1294, 932, and 757 cm −1 , which may be hydrogen bonding and confirm the RhB adsorbed on MOF-5@GO nanocomposites. 44 The Zn−O band is shifted and found to be 494 cm −1 due to interactions with water, GO, and RhB. However, after being immersed in water up to 5 days, the MOF-5@GO nanocomposite did not lose its crystallinity.…”

Section: Resultsmentioning

confidence: 95%

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Kumar

Masram

2021

ACS Omega

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Herein, a metal–organic framework (MOF-5) is synthesized by a solvothermal process and graphene oxide (GO) is prepared from the improved Hummer’s method. The synthesis of MOF-5@GO nanocomposites is one-pot process via a grinding method and employed for the removal of Rhodamine B (RhB) dye. The removal efficiency of RhB is found to be 60.64% (151.62 mg·g –1 ) at 500 ppm. About 98.88% of RhB is removed within 5 min of contact time and increased up to 99.68% up to 10 min. The removal rate of MOF-5@GO nanocomposites is much better than that of pristine MOF-5. Equilibrium adsorption capacity is determined by a series of different experimental conditions such as pH, time, and concentration of dye solution. Although the results also showed that dye removal on MOF-5@GO nanocomposites is well described by the Langmuir isotherm ( R 2 = 0.9703), the adsorption kinetics data reveals pseudo-second-order ( R 2 = 0.9908). The synthesized nanocomposite is efficient for removal of dye, cost-effective, and reusable. Additionally, stability and self-degradation studies of pure RhB are reported in aqueous solution for up to 120 days at different pH values (pH 1–12).

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Section: Resultsmentioning

confidence: 95%

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Kumar

Masram

2021

ACS Omega

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“…Sorption mechanism of dyes has also been thoroughly described in terms of electrostatic attractions and hydrogen bonding [159]. At a lower pH the surface of ZnFe2O4 has a net positive charge, and anionic acid red 88 (AR88) adsorption was favourable [114].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Application of Magnetic Nano Particles and their Composites as Adsorbents for Waste Water Treatment: A Brief Review

Dhiman

2021

Materials Research Foundations

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The present review highlights the different types of nano ferrites and their surface modified composites as an alternative adsorbent in waste water treatment. In this review, the recent progresses and potential applications of SFNPs/SFNCs for the removal of organic and inorganic contaminants through adsorption routes are critically reviewed. There are number of water purification techniques but the adsorption is one of the simplest, effective and economical method for wastewater purification. Adsorption isotherm models, kinetic models, thermodynamic parameters and adsorption mechanism have also been discussed. The present article lists different type of adsorbents and reviews state-of-the-art of the removal of different pollutants from water. The efforts have been made to discuss the sources of contamination and toxicities of pollutants. The possible techniques of recovery and reuse, toxicity, research gaps and the future perspective of SFNPs are also discussed in brief. Based on this review, it is possible to conclude that SFNPs and their derivative composites have unlimited capacity in addressing array of problems encountered in water and wastewater treatment. The present study highlights the future areas of research for waste water treatment.

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“…This material has two types of structure, namely hollow and layered [1]. Hollow structure materials have wider applications, especially in the areas of catalysts, batteries, electrodes, separations, and selective adsorption [2][3][4][5][6][7]. Manganese oxide layered structure is used as an ion-exchange material and as a cathode material for refilling in lithium batteries [8][9].…”

Section: Introductionmentioning

confidence: 99%

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

Prasetya¹,

Putri²,

Yuhelson³

et al. 2019

Proceedings of the International Conference of CELSciTech 2019 - Science and Technology Track (ICCELST-ST 2019)

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The need for catalysts for effective and environmentally friendly waste degradation is increasing. Manganese oxide has a layered structure which is theoretically capable of producing catalysis properties. The synthesis was done through variation of mole ratio of precursors and time of washing. The variations ratio of moles of precursors and washing determined the type of manganese oxide. Synthesis of birnessite type manganese oxide has been successfully performed using KMnO 4 and citric acid precursors via sol-gel method. The optimum condition of birnessite synthesis through sol-gel method was obtained in a precursor mole ratio of KMnO 4 and citric acid 3:1, single washing, with a time of calcination for 5 hours, and calcination temperature of 500 °C. The results showed that the ratio of K/Mn atoms were 3.1 to 8.0. Interpretation of infrared absorption shows a typical vibration of birnessite. Birnessite produced has a formula which was KMn 3 O 11. Birnessite can eliminate Methylene Blue up to 97.63%.

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Effect of a pH-controlled co-precipitation process on rhodamine B adsorption of MnFe₂O₄ nanoparticles

Abstract: The MnFe2O4-pH 10.5 sample exhibited high adsorption capacity towards rhodamine B (RhB) solution. The high adsorption capacity towards RhB can be attributed to the large pore size and negative surface charge of MnFe2O4 nanoparticles.

Cited by 34 publications

References 75 publications

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Application of Magnetic Nano Particles and their Composites as Adsorbents for Waste Water Treatment: A Brief Review

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

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Effect of a pH-controlled co-precipitation process on rhodamine B adsorption of MnFe2O4 nanoparticles

Abstract: The MnFe2O4-pH 10.5 sample exhibited high adsorption capacity towards rhodamine B (RhB) solution. The high adsorption capacity towards RhB can be attributed to the large pore size and negative surface charge of MnFe2O4 nanoparticles.

Cited by 34 publications

References 75 publications

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Sustainable Synthesis of MOF-5@GO Nanocomposites for Efficient Removal of Rhodamine B from Water

Application of Magnetic Nano Particles and their Composites as Adsorbents for Waste Water Treatment: A Brief Review

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

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Effect of a pH-controlled co-precipitation process on rhodamine B adsorption of MnFe₂O₄ nanoparticles