A novel nanohybrid based on metal–organic framework MIL101<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mo>−</mml:mo></mml:math>Cr/PANI/Ag for the adsorption of cationic methylene blue dye from aqueous solution

Karami, Kazem; Beram, Somayeh Mahmodi; Bayat, Parvaneh; Siadatnasab, Firouzeh; Ramezanpour, Azar

doi:10.1016/j.molstruc.2021.131352

Cited by 38 publications

(11 citation statements)

References 48 publications

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“…The XRD diffraction patterns of the prepared photocatalytic PVDF MMMs, h-BN nanoparticles, TiO 2 nanoparticles, and 12,24,25 Further, the characteristic diffraction pattern of the h-BN nanoparticles at 2θ = 26.6°, 41.8°, 43.8°, and 55°b elongs to the (002), ( 100), (101), and (004) planes of h-BN, respectively according to JCPDS card No. 85-1068.…”

Section: Xrd Analysis Of Mil-101(cr) H-bn and Tio 2 Based Photocataly...mentioning

confidence: 99%

“…8,9 In addition, MOF nanocomposites with different 2-dimensional nanomaterials have received considerable attention in recent years. 7,8,[10][11][12][13][14] Chang et al 8 reported that methylene blue (MB), rhodamine B (RB), and crystal violet (CV) were subjected to the adsorption and photocatalytic degradation of the TiO 2 -MIL-101 nanocomposite. Based on the results of the experimental investigation, it was discovered that the TiO 2 -MIL-101 nanocomposite showed outstanding photocatalytic activity for the degradation of MB, RB, and CV.…”

Section: Introductionmentioning

confidence: 99%

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A metal organic framework decorated 2-dimensional nanomaterial based nanocomposite photocatalyst for photocatalytic degradation of dyes from textile industry wastewater

Sonawane¹,

Murthy²

2023

Environ. Sci.: Water Res. Technol.

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Section: Xrd Analysis Of Mil-101(cr) H-bn and Tio 2 Based Photocataly...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A metal organic framework decorated 2-dimensional nanomaterial based nanocomposite photocatalyst for photocatalytic degradation of dyes from textile industry wastewater

Sonawane¹,

Murthy²

2023

Environ. Sci.: Water Res. Technol.

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“…The mechanism of dye removal through the adsorbents in aqueous solution can be influenced by many factors, including the surface area of adsorbents, the textural properties, and the nature of the interaction between the adsorbents and the dyes, such as π-π stacking, hydrogen bonding, electrostatic attractions, ion exchange, coordination, and acid/base interaction [76]. Moreover, based on the above analyses of the isothermal and kinetic models, physisorption (multilayer) and chemisorption (monolayer) adsorption probably dominate the adsorption process on a uniform surface.…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Application of Activated Carbon Adsorbents Prepared from Prickly Pear Fruit Seeds and a Conductive Polymer Matrix to Remove Congo Red from Aqueous Solutions

Lahreche

Moulefera

Kebir

et al. 2022

Fibers

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The present work was aimed to evaluate the adsorption properties of activated carbons based on prickly pear seeds (PPS) and conductive polymer matrix based on polyaniline (PANI) for the removal of anionic Congo red (CR) dye from aqueous solutions. The adsorbent was prepared by polymerization of aniline in the presence of activated PPS by phosphoric acid and sodium hydroxide. The samples were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and the Brunauer–Emmett–Teller (BET) methods. The adsorption kinetics were studied using UV-visible (UV/Vis) spectroscopy. The characterization data suggest that the adsorption of the Congo red dye is enhanced because PANI chain molecules, which are especially accountable for removal through π—π interaction and H-bonding with the CR, are adsorbed/tethered onto the acid-activated PPS (PPSH), and thus surmount the mass transfer limitation by being best exposed to the CR-adsorbed molecule. The adsorption kinetics follows the pseudo-second order process. The correlation coefficients (R2) for Langmuir, Freundlich and Tempkin showed that the adsorption values obey Freundlich and Tempkin isotherm models. Moreover, the isotherm was most accurately described by the Freundlich model, and the maximum removal percentage was calculated to be 91.14% under optimized conditions of pH 6.6, 1 g/L of adsorbent dosage, and an initial CR dye concentration of 20 mg·L−1. Importantly, the hybrid adsorbent exhibited the highest adsorption capacity (80.15%) after five cycles of the adsorption–desorption process. Thermodynamic parameters, such as entropy changes, enthalpy changes and Gibbs free energy, were also evaluated. These results indicated that the PANI matrix can generally be better utilized for the removal of Congo red dye when appropriately dispersed on the surface of suitable support materials. These results provide a new direction to promote the separable adsorbents with increasing performance for adsorption of dye impurities from wastewater.

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“…Lignocellulose-based activated carbon is also being studied to adsorb harmful substances by reforming activated carbon with clay (Khnifira et al 2022), metal (Arora et al 2019;Soni et al 2020a;Karami et al 2022), and metal oxide (Patil & Shrivastava 2016;Soni et al 2020b;Kumar & Kumar 2022). However, most are produced through two main processes: carbonization or pyrolysis and activation (physical or chemical).…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Surface modification of spent coffee grounds using phosphoric acid for enhancement of methylene blue adsorption from aqueous solution

Akindolie

Choi

2022

Water Science and Technology

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In this study, the surface of the spent coffee grounds (SCG) was activated using phosphoric acid to increase the removal efficiency of methylene blue (MB) in aqueous solution, which is one of the harmful substances emitted in industrial processes. According to Fourier transform infra-red analysis, after phosphorylation of the SCG (PSCG), P = O group, P–O–C (aromatic) bond, P = OOH and P–O–P were newly introduced on the surface of the adsorbent, and the peaks of carboxyl groups and OH-group were large and broad. In addition, the surface area and mesopore range of the PSCG adsorbent were increased, and the structure changed, which enabled easy adsorption of MB. The process of adsorbing MB from aqueous solution using PSCG was more suitable for the pseudo-second order and Langmuir models, and the adsorption process was closer to chemisorption than physical adsorption. The maximum adsorption capacity of PSCG was 188.68 mg/g. As a result of the reuse test, PSCG showed excellent performance with a high removal efficiency of 90% up to four consecutive uses. PSCG modified with phosphoric acid, an abundant lignocellulose-based biosorbent that is readily available everywhere, is a promising adsorbent capable of adsorbing MB in aqueous solution.

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A novel nanohybrid based on metal–organic framework MIL101−Cr/PANI/Ag for the adsorption of cationic methylene blue dye from aqueous solution

Cited by 38 publications

References 48 publications

A metal organic framework decorated 2-dimensional nanomaterial based nanocomposite photocatalyst for photocatalytic degradation of dyes from textile industry wastewater

A metal organic framework decorated 2-dimensional nanomaterial based nanocomposite photocatalyst for photocatalytic degradation of dyes from textile industry wastewater

Application of Activated Carbon Adsorbents Prepared from Prickly Pear Fruit Seeds and a Conductive Polymer Matrix to Remove Congo Red from Aqueous Solutions

Surface modification of spent coffee grounds using phosphoric acid for enhancement of methylene blue adsorption from aqueous solution

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