Deciphering the potent application of nanobentonite and α-Fe2O3/bentonite nanocomposite in dye removal: revisiting the insights of adsorption mechanism

Sharma, Pratibha; Yadav, Vikas; Kumari, Sujata; Ghosh, Dibakar; Rawat, Pooja; Vij, Ankush; Srivastava, Chandramohan; Saini, Sonia; Sharma, Vivek; Hassan, Md. Imtaiyaz; Majumder, Sudip

doi:10.1007/s13204-021-01927-z

Cited by 8 publications

(8 citation statements)

References 34 publications

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“…This is due to the presence of mesopores as obtained from partial agglomeration that can be seen from the HRTEM images. [54] The maximum pore size distribution curves as given in Figure 5(b) in the range of 2-50 nm further indicates the mesoporous nature. As a result, GTF-GG possesses a maximum surface area of 53.967 m 2 /g with a total pore volume of 3.942e-0.1 cc/g for pores smaller than 252.6 nm (diameter) at 0.99236 P/P o value.…”

Section: Morphological Studies and Composition Analysismentioning

confidence: 69%

“…From Figure 5, it was clear that both the nanocomposites exhibited the type IV with H 3 hysteresis loop corresponding to the capillary condensation mechanism. This is due to the presence of mesopores as obtained from partial agglomeration that can be seen from the HRTEM images [54] . The maximum pore size distribution curves as given in Figure 5(b) in the range of 2–50 nm further indicates the mesoporous nature.…”

Section: Introductionmentioning

confidence: 70%

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Enhancement of Photocatalytic Degradation of Methylene Blue Dye Using Graphene Oxide Based Ternary Nanocomposite

Yadav,

Sharma,

Kumari

et al. 2023

ChemistrySelect

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The scarcity of pure water, as well as the growing water shortage, highlight the importance of finding an efficient material for wastewater treatment. Treating pollutants present in wastewater is a challenging task so several methods have been developed for the treatment of pollutants present in wastewater. Among all, utilizing graphene based nanocomposite as adsorbent is a good option and can be utilized efficiently for wastewater treatment. In this work graphene oxide (GO) based ternary nanocomposite was synthesized via the co‐precipitation method and utilized for the photocatalytic degradation of methylene blue (MB) dye. Powder X‐ray Diffraction (PXRD), Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive Spectroscopy (EDS), High Resolution Transmission Electron Microscope (HRTEM), UV‐vis Diffuse Reflectance Spectra (DRS), Brunauer‐ Emmett & Teller (BET) method, and UV‐Vis spectroscopy were used to investigate the formation of GO‐TiO2‐Fe2O3 (GTF) nanocomposites and the effect of graphene oxide addition on the photophysical properties of the composite. XRD data confirmed the high crystallinity of the obtained ternary nanocomposite. HRTEM and FESEM instruments confirmed the shape and morphology of the GTF nanocomposite which were found to be spherical with an average particle size of 20–80 nm. The photocatalytic degradation of the ternary composite was examined using MB as a model dye. The efficiency of the GTF nanocomposite was examined and compared with GO‐TiO2‐Fe2O3‐GG (GTF‐GG) and GO. The degradation efficiency of GTF‐GG, GTF, and GO was found to be 89.82 %, 77.34 % and 58.15 % within 270 min respectively. The prepared nanocomposite may be a promising material for the photocatalytic degradation of dye effluent present in wastewater.

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Section: Morphological Studies and Composition Analysismentioning

confidence: 69%

Section: Introductionmentioning

confidence: 70%

Enhancement of Photocatalytic Degradation of Methylene Blue Dye Using Graphene Oxide Based Ternary Nanocomposite

Yadav,

Sharma,

Kumari

et al. 2023

ChemistrySelect

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“…The value of R L was found in the range of 0.0717-0.898 for the MCS composite. This shows the efficient interaction between the MCS composite and cadmium ions [46]. Figure 9a shows the Langmuir plot for MNPs and MCS composite.…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 88%

“…The adsorption is characterized by a uniform distribution of binding energies. The binding energies were 199.28, 185.86, and 146.10 J/mol for MNPs and 132.85, 94.68, and 69.43 J/mol for MCS at 308, 303, and 298 K, respectively [46][47][48].…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 96%

Myrica esculenta Leaf Extract—Assisted Green Synthesis of Porous Magnetic Chitosan Composites for Fast Removal of Cd (II) from Water: Kinetics and Thermodynamics of Adsorption

Yadav,

Raghav,

Jangid

et al. 2023

Polymers

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Heavy metal contamination in water resources is a major issue worldwide. Metals released into the environment endanger human health, owing to their persistence and absorption into the food chain. Cadmium is a highly toxic heavy metal, which causes severe health hazards in human beings as well as in animals. To overcome the issue, current research focused on cadmium ion removal from the polluted water by using porous magnetic chitosan composite produced from Kaphal (Myrica esculenta) leaves. The synthesized composite was characterized by BET, XRD, FT-IR, FE-SEM with EDX, and VSM to understand the structural, textural, surface functional, morphological-compositional, and magnetic properties, respectively, that contributed to the adsorption of Cd. The maximum Cd adsorption capacities observed for the Fe3O4 nanoparticles (MNPs) and porous magnetic chitosan (MCS) composite were 290 mg/g and 426 mg/g, respectively. Both the adsorption processes followed second-order kinetics. Batch adsorption studies were carried out to understand the optimum conditions for the fast adsorption process. Both the adsorbents could be regenerated for up to seven cycles without appreciable loss in adsorption capacity. The porous magnetic chitosan composite showed improved adsorption compared to MNPs. The mechanism for cadmium ion adsorption by MNPs and MCS has been postulated. Magnetic-modified chitosan-based composites that exhibit high adsorption efficiency, regeneration, and easy separation from a solution have broad development prospects in various industrial sewage and wastewater treatment fields.

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“…The product was filtered, rinsed with ethanol and distilled water, then dried. The final product was a brick red powder which was calcined at 600 °C for 3 hours (Sharma et al, 2021).…”

Section: Synthesis Of α-Fe2o3 Nanoparticlesmentioning

confidence: 99%

Application of PAN/α-Fe2O3-Bentonite as A Photocatalytic Membrane for The Photodegradation of Methylene Blue

Sitompul¹,

Kemala²,

Darmawan³

2023

Valensi

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The intricate molecular structure of the dyes in wastewater makes it difficult to biodegrade, which could harm the environment. Currently, semiconductor-based photocatalytic methods are being developed to remove dyes from water. In this study, the α-Fe2O3-bentonite photocatalyst was synthesized by mechanical milling and immobilized in polyacrylonitrile (PAN) membrane by phase inversion. Analysis of the composition and surface morphology of the synthesized samples was carried out by FTIR, XRD, and EDX. The performance of the photocatalytic membrane was studied by investigating the removal of methylene blue (MB). Photocatalytic membrane with 2% α-Fe2O3-bentonite had the best performance in removing MB (10 ppm) that reached 99.84% at pH 11.5 with an irradiation time of 300 minutes under direct sunlight. The reuse cycle of the photocatalytic membrane was also carried out and the results showed that there is no significant change in the photodegradation efficiency after 3 cycles. Photocatalyst immobilization on PAN membranes is proven to overcome the post-recovery problem of photocatalysts and making easier to reuse. The photocatalyst membrane synthesized in this study can be used as an alternative for removing dyes from water.

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Deciphering the potent application of nanobentonite and α-Fe2O3/bentonite nanocomposite in dye removal: revisiting the insights of adsorption mechanism

Cited by 8 publications

References 34 publications

Enhancement of Photocatalytic Degradation of Methylene Blue Dye Using Graphene Oxide Based Ternary Nanocomposite

Enhancement of Photocatalytic Degradation of Methylene Blue Dye Using Graphene Oxide Based Ternary Nanocomposite

Myrica esculenta Leaf Extract—Assisted Green Synthesis of Porous Magnetic Chitosan Composites for Fast Removal of Cd (II) from Water: Kinetics and Thermodynamics of Adsorption

Application of PAN/α-Fe2O3-Bentonite as A Photocatalytic Membrane for The Photodegradation of Methylene Blue

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