Investigation into the Adsorption of Methylene Blue and Methyl Orange by UiO-66-NO2 Nanoparticles

Dinh, Hien Thi; Tran, Nam Trung; Trinh, Dai Xuan

doi:10.1155/2021/5512174

Cited by 40 publications

(12 citation statements)

References 48 publications

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“…13 Wastewater discharged during cationic dye manufacturing and dyeing can cause allergic dermatitis, neurological diseases, rashes, cancer, and mutations. 14 The positively charged cationic dye molecule is soluble in water and creates colored cations in the solution. Wastewater from printing and dyeing processes frequently contains the cationic dye neutral red (NR).…”

Section: Introductionmentioning

confidence: 99%

Study on the Adsorption Properties of Oxalic Acid-Modified Cordierite Honeycomb Ceramics for Neutral Red Dyes

Yang

Cheng

et al. 2023

ACS Omega

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Removal of organic dyes from water by monolithic adsorbents is considered as an efficient and no-secondary pollution method. Herein, for the first time cordierite honeycomb ceramics (COR) treated with oxalic acid (CORA) were synthesized. This CORA exhibits outstanding removal efficiency toward the azo neutral red dyes (NR) from water. After optimizing the reaction conditions, the highest adsorption capacity of 7.35 mg·g –1 and a removal rate of 98.89% could be achieved within 300 min. Furthermore, investigation of the adsorption kinetics indicated this adsorption process could be described as a pseudo-second-order kinetic model with k 2 and q e of 0.0114 g·mg –1 ·min –1 and 6.94 mg·g –1 , respectively. According to the fitting calculation, the adsorption isotherm could also be described as the Freundlich isotherm model. The removal efficiency could be maintained above 50% after 4 cycles, negating the need for toxic organic solvent extraction, offering a method for bringing the technology one step closer to industrial application and giving CORA promising potential in practical water treatment.

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Section: Introductionmentioning

confidence: 99%

Study on the Adsorption Properties of Oxalic Acid-Modified Cordierite Honeycomb Ceramics for Neutral Red Dyes

Yang

Cheng

et al. 2023

ACS Omega

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“…This shows that, degree of CBB adsorption by OTAuAgNPs is proportionate to the CBB concentration and follows the PSO and Elovich model, con rming the chemisorption of dyes on nanoparticle surfaces. Adsorption of methyl orange by UiO-66-NO 2 nanoparticles also tted PSO and Elovich model which con rmed the chemisorption interaction among the dye and the nanoparticle surface (Dinh et al,2021). The rate constant of the process was observed as 5.96E -04 g/mg.min.…”

Section: Adsorption Kineticsmentioning

confidence: 74%

Exploring bimetallic Au–Ag core shell nanoparticles reduced using leaf extract of Ocimum tenuiflorum as a potential antibacterial and nanocatalytic agent

2022

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Biosynthesis of bimetallic Au-Ag core shell nanoparticle under ambient condition using Ocimum tenui orum (Krishna Tulsi) leaf extract is being reported for the rst time. For the biosynthesized bimetallic core shell nanoparticles (OTAuAgNPs) visual and spectrophotometric analysis was performed.Development of a deep purple color suggested the creation of OTAuAgNPs. It was then validated by UV-Vis spectrophotometry within 4 hours of incubation showing a surface plasmon resonance peak at 560 nm. FESEM-EDAX, FT-IR, particle analyzer and XRD were the analytical techniques employed to characterize the biosynthesized OTAuAgNPs. Using a known antibiotic as a control, OTAuAgNPs had a substantial bacteriostatic effect against Gram +ve (Bacillus subtilis) and Gram -ve (E.coli, Pseudomonas aeruginosa) bacteria. The OTAuAgNPs showed good catalytic action for the adsorption of Coomassie brilliant blue R250 dye (CBB), con rmed by the reduction in absorbance maxima that is time dependant.A remarkable adsorption of CBB (94.79%) was attained within 120 min, and the results were best suited PSO and Elovich models with adsorption kinetic constant of 5.96E −04 g/mg.min and 37.81mg/g.min respectively. Further the toxicity studies of brilliant blue R250 dye and metabolite of CBB (post nanoremediated dye solution) was carried out on Vigna radiata (green gram) germination and growth. OTAuAgNPs as nano catalyst remediated water revealed that it was nontoxic. Thus an ecofriendly and cost effective approach for bimetallic nanoparticle synthesis could be further explored for removal of CBB from wastewater e uents.

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“…Studies conducted byBello et al (2009) indicated that the adsorption of MBD on the surface of periwinkle shells had a maximum theoretical Qe value of 454 mg/g (which is lower than the value obtained in this study). K2 values had a range of 0.015 to 0.0124 g/(mg/h) and the fitness was described by R 2 as approximately equal to 0.99 Dinh et al (2021). also obtained k2 = 0.064 g/mg/min for the adsorption of MBD by UiO-66-NO2 nanoparticles, which obeyed a pseudo second order kinetic.The adsorption data for MBD onto CaONPO did not fit the pseudo first order model but obeyed the pseudo second order model with R 2 value of 0.9735.The third kinetic model considered for the adsorption of methylene blue dye is the Elovich model, which can technically be represented according to equation 9(Goyal et al 2021) 𝑢𝑛𝑖𝑡 = 𝑔/𝑚𝑔 and 𝛼 (𝑈𝑛𝑖𝑡 = 𝑚𝑔/𝑔.…”

mentioning

confidence: 74%

Quantum and Experimental Studies on the Adsorption Efficiency of Oyster Shells Based CaO Nanoparticles (CaONPO) Toward the Removal of MethyleneBlue Dye (MBD) from Aqueous Solution

Kelle

Ogoko

Eddy

2023

Preprint

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The significance of nanoparticles in environmental remediation of water pollution is attributed to their exceptional properties such as thermal stability, particle size, porosity, surface area and other properties. In this study, oyster shells were used as a precursor to synthesized CaO nanoparticles due to their high CaCO3 content. Sol gel method was employed. The synthesized nanoparticles exhibited strong thermal stability beyond 900 °C and exhibited \({}_{max}\), BET surface area, BET volume and mesoporous pore dimension of 281 nm, 10.395 m2/g, 369.30 m3 and 2.88 nm respectively. The Langmuir maximum adsorption capacity was 3333.33 mg/g and the adsorption process showed strong dependence on the period of contact, temperature, pH, initial concentration of the dye and ionic strength. The adsorption of the dye best fitted pseudo second order kinetic with boundary layer diffusion being the rate-limiting step. Perfect fitness was also observed for the Langmuir adsorption isotherm while two and three-parameters isotherms such as Redlich Peterson and Sipps were also useful in describing the adsorption behaviour of the dye. Based on the evaluated free energy of adsorption and adsorption energies, the mechanism of physical adsorption was proposed. Theoretical parameters derived from quantum chemical calculations indicated strong agreement with experimental values. The adsorbent can be re-used after washing and recalcination.

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Investigation into the Adsorption of Methylene Blue and Methyl Orange by UiO-66-NO2 Nanoparticles

Cited by 40 publications

References 48 publications

Study on the Adsorption Properties of Oxalic Acid-Modified Cordierite Honeycomb Ceramics for Neutral Red Dyes

Study on the Adsorption Properties of Oxalic Acid-Modified Cordierite Honeycomb Ceramics for Neutral Red Dyes

Exploring bimetallic Au–Ag core shell nanoparticles reduced using leaf extract of Ocimum tenuiflorum as a potential antibacterial and nanocatalytic agent

Quantum and Experimental Studies on the Adsorption Efficiency of Oyster Shells Based CaO Nanoparticles (CaONPO) Toward the Removal of MethyleneBlue Dye (MBD) from Aqueous Solution

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