Cu-doped ZnO nanoparticle for removal of reactive black 5: application of artificial neural networks and multiple linear regression for modeling and optimization

Salehi, Kamal; Daraei, Hiua; Teymouri, Pari; Shahmoradi, Behzad; Maleki, Afshin

doi:10.1080/19443994.2015.1130658

Cited by 21 publications

(9 citation statements)

References 20 publications

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“…The optimum value of C 0 was 1000 mg/L. Increasing the initial dye concentration, adsorption sites will be occupied; thus, occupying the remaining vacant superficial active sites will be difficult due to the interaction (repulsive force) among the dye molecules adsorbed onto the surface [14, 19, 21, 22, 68]. The dye uptake increases rapidly as the contact time increases; at a point, the amount of Rh–B dye adsorbed became progressively slow until it attained equilibrium.…”

Section: Resultsmentioning

confidence: 99%

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Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Bello

Adegoke

Sarumi

et al. 2019

Heliyon

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Activated carbon prepared from locust bean husk was modified using ortho-phosphoric acid (ALBP) and used to scavenge Rhodamine B (RhB) dye from aqueous solutions. Characteristic features of the adsorbents were investigated using SEM, FTIR, pH pzc and Boehm Titration (BT) techniques respectively. Batch studies were used to determine the influences of contact time, temperature and initial Rh–B dye concentrations. Adsorption data were analysed using four different isotherm models. The maximum monolayer adsorption capacity of 1111.1 mgg -1 was obtained for RhB dye adsorption. The kinetics of the adsorption process was studied using pseudo-first-order, pseudo-second-order Elovich and intraparticle diffusion models respectively. The experimental data was best described by pseudo-second-order kinetic model. Favourability of the process of adsorption was also established by the separator factor (R L ) value ranging from 0 and 1, while the mean energy of adsorption (E a ) was 1.12 kJmol -1 suggesting that the removal of Rh–B dye from aqueous solution followed a physisorption process. For the thermodynamic investigations, the positive values of ΔS (280.956 Jmol −1 K −1 ) indicates the affinity of adsorbent for the Rh–B dye uptake and increase randomness at the solid–solution interface during adsorption of Rh–B dye onto the surface of the active sites of ALBP. The negative value of ΔG (-31.892 to -26.355 kJmol -1 ) depicts the spontaneity and feasibility of the adsorption process. The cost analysis provides a simple proof that ALBP (42.52 USD per kg) is approximately six times cheaper than Commercial Activated Carbon, CAC (259.5 USD per kg). The present study therefore established the suitability of ALBP for effective removal of Rh–B dye from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

“…In this process, hydrogen ions are replaced with changeable ions. The formation of these changeable ions create a porous structure and high surface area, which eventually increase its adsorption capacity [19, 20, 21, 22, 23, 24].…”

Section: Introductionmentioning

confidence: 99%

Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Bello

Adegoke

Sarumi

et al. 2019

Heliyon

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“…In another study, Salehi et al examined the effects of Cu-doped nZnO for the removal of RB-5 dye under sunlight. They used statistical tools to optimize process variables and design dye removal experiments [ 27 ]. These methods are time-consuming as all of them are multistep processes as well as an essential need of stabilizer is required to achieve small size of particles for these methods.…”

Section: Introductionmentioning

confidence: 99%

Functional Properties of Sonochemically Synthesized Zinc Oxide Nanoparticles and Cotton Composites

Noman

Petrů

2020

Nanomaterials

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In this study, zinc oxide nanoparticles (nZnO) were synthesized, deposited, and successfully used for surface modification of cotton to enhance antimicrobial properties. An in situ ultrasonic acoustic method was applied to anchor nZnO on cotton. The results of scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction confirmed the presence of nZnO on cotton. A homogenous distribution of nZnO with an average particle size 27.4 nm was found during the analysis of results. Antimicrobial performance of cotton-nZnO (C-nZnO) composites was evaluated against Gram-negative and Gram-positive microbes. The deposited amount of nZnO on C-nZnO composites was determined by volumetric titration through inductive couple plasma atomic emission spectroscopy. C-nZnO composites showed excellent antimicrobial performance especially against both Staphylococcus aureus (Gram-positive) and Escherichia coli. The durability and stability of C-nZnO composites were tested against leaching and washing. No significant fluctuation was found on deposited amount of nZnO before and after washing test for optimized sample. The results demonstrate that synthesized C-nZnO composite samples can be used as an alternative for antimicrobial bandages.

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“…Therefore, in recent years, much attention has been paid to the treatment of various industrial wastewater and its non-entry into the environment. Among the various industrial pollutants, organic dyes are one of the most dangerous and harmful pollutants that pollute groundwater and destroy ecosystems [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a g-C₃N₄/TiO₂-ZnO nanostructure for photocatalytic degradation of methylene blue

Saeidpour¹,

Khoshnevisan²,

Boroumand³

2022

Nano Futures

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In this study, g-C3N4, g-C3N4/TiO2, g-C3N4/ZnO, g-C3N4/TiO2-ZnO nanostructures with different molar ratios of ZnO were synthesized. The synthesized samples were characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), brunauer-emmett-teller (BET) and UV–visible diffuse reflectance spectroscopy (UV-vis-DRS) techniques. The FE-SEM images showed the surface morphology of each samples. The results of UV-vis-DRS indicated that the band-gap of TiO2 was reduced by adding g-C3N4 and different molar ratios of ZnO. The results obtained from BET analysis confirmed that the surface area of g-C3N4/TiO2-ZnO (1:10) nanostructure was 97.494 cm2/g and comparatively higher than other nanostructures and became suitable for photocatalytic activity. The photocatalytic activity of the g-C3N4/TiO2-ZnO nanostructure was performed by the photo-degradation of methylene blue dye under simulated solar light. The results of photocatalytic activity showed that the synthesized nanostructure had good degradation ultraviolet and visible light irradiation by 94.6% and 62.4%, respectively. Also, the kinetics of photocatalytic degradation confirmed that degradation of MB dye in the presence of ultraviolet light was faster than visible light. Furthermore, the study on reusability of nanostructure exhibited good photo-stability and activity after six runs.

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Cu-doped ZnO nanoparticle for removal of reactive black 5: application of artificial neural networks and multiple linear regression for modeling and optimization

Cited by 21 publications

References 20 publications

Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Functional Properties of Sonochemically Synthesized Zinc Oxide Nanoparticles and Cotton Composites

Synthesis and characterization of a g-C₃N₄/TiO₂-ZnO nanostructure for photocatalytic degradation of methylene blue

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Cu-doped ZnO nanoparticle for removal of reactive black 5: application of artificial neural networks and multiple linear regression for modeling and optimization

Cited by 21 publications

References 20 publications

Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Functionalized locust bean pod (Parkia biglobosa) activated carbon for Rhodamine B dye removal

Functional Properties of Sonochemically Synthesized Zinc Oxide Nanoparticles and Cotton Composites

Synthesis and characterization of a g-C3N4/TiO2-ZnO nanostructure for photocatalytic degradation of methylene blue

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Product

Resources

About

Synthesis and characterization of a g-C₃N₄/TiO₂-ZnO nanostructure for photocatalytic degradation of methylene blue