Adsorption Behavior of Congo Red onto Barium-Doped ZnO Nanoparticles: Correlation between Experimental Results and DFT Calculations

Rahali, Seyfeddine; Aissa, Mohamed Ali Ben; Khezami, Lotfi; Elamin, Nuha Y.; Seydou, Mahamadou; Modwi, A.

doi:10.1021/acs.langmuir.1c00378

Cited by 44 publications

(17 citation statements)

References 67 publications

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“…Many studies prove that the solution pH value plays a crucial role in the adsorption process by modifying the surface charge of nanomaterials [ 23 , 37 ]. Therefore, the surface is positively charged at pH lower than pHZPC value and negatively charged at pH greater than pHZPC value.…”

Section: Resultsmentioning

confidence: 99%

“…It is not a cost-effective approach, photocatalysts leach into the water system, and it is ineffective in dark conditions [ 22 ]. The adsorption method is considered the most effective technology for removing dye pollutants from water due to its low cost, high efficiency, versatility, and ease of use [ 23 ]. The critical component of this approach is the development of high-performance adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

et al. 2022

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The organic synthetic dyes employed in industries are carcinogenic and harmful. Dyes must be removed from wastewater to limit or eliminate their presence before dumping into the natural environment. The current study aims to investigate the use of MgO nanoparticles to eliminate basic fuchsine (BF), as a model cationic dye pollutant, from wastewater. The MgO nanorods were synthesized through a coprecipitation method. The obtained nanocomposite was characterized using various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Brunauer–Emmett–Teller (BET), and FTIR spectroscopy. It was found that the variation of dye concentration and pH influenced the removal of BF by MgO. The adsorption capacity of 493.90 mg/g is achieved under optimum operating conditions (pH = 11, contact time = 236 min, and initial BF concentration = 200 ppm). Pseudo-second-order adsorption kinetics and Freundlich isotherm models best fitted BF sorption onto MgO nanorods. The BF sorption mechanism is associated with the electrostatic attractions and hydrogen bond between the O–H group of MgO and the NH2 groups of BF, as indicated by the pH, isotherms, and FTIR studies. The reusability study indicates that MgO was effectively used to eliminate BF in at least four continuous cycles. The investigation of MgO with different dyes suggests the high adsorption selectivity of BF, crystal violet (CV), and malachite green (MG) dyes compared with methyl orange (MO) dye. Overall, MgO nanorods can act as a potential and promising adsorbent for the efficient and rapid removal of cationic dyes (CV, MG, and BF) from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

et al. 2022

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“…Our study clearly shows the biomolecule hyaluronic acid mediated silver nanoparticles size in the range of less than 50 nm and less cytotoxic effect confirmed by brine shrimp lethality assay. Based on the present study, the Titanium dioxide nanoparticles will be used for many biomedical applications in future [47].…”

Section: Discussionmentioning

confidence: 92%

Antioxidant and Antiinflammatory Activity of Titanium Dioxide Nanoparticles Synthesised Using Mucuna pruriens

Aditya

Arivarasu

Rajeshkumar

et al. 2021

JPRI

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Introduction: The genus Mucuna, belonging to the Fabaceae family, sub family Papilionaceae, includes approximately 150 species of annual and perennial legumes. Titanium dioxide (TiO2) nanoparticles (NPs) are manufactured worldwide in large quantities for use in a wide range of applications.Various studies have been done in this topic like determining the efficacies of antibacterial and antioxidant activities of aqueous leaf extract of Psidium guajava mediated biosynthesis of titanium dioxide nanoparticles. Other studies have suggested that Obtaining biopeptides by enzymatic hydrolysis adds value to proteins of vegetative origin, such as Mucuna pruriens L. Thus it evaluated the effect of enzymatic digestion of protein derivatives obtained from M. pruriens L. Although a lot of studies have been done on Titanium dioxide nanoparticles and its various activities like anti-inflammatory, antioxidant and anti diabetic, there are not many studies in the area of checking anti inflammatory and antioxidant activity of titanium dioxide nanoparticles synthesised using Mucuna pruriens The aim of this study is to observe the antioxidant and anti inflammatory activity of Titanium dioxide nanoparticles synthesised using Mucuna pruriens. Materials and Methods: A titanium dioxide nanoparticle is synthesised using Mucuna pruriens, extract used to perform albumin denaturation assays and DPPH method, where % zone of inhibition increases as the concentration of nanoparticles increases. Results: The Mucuna pruriens medicated titanium dioxide nanoparticle has positive antioxidant and anti-inflammatory properties. Conclusion: The present study concluded that Mucuna pruriens mediated copper nanoparticle has good antioxidant and anti-inflammatory activity at its high concentration which is nearer to that of the standard drugs.

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“…The AC-Zn-CP electrode displays specific capacitances of 215, 193, 184, 180, and 164 F g −1 at current densities of 0.5, 1, 2, 5, and 10 A g −1 , greatly preceding all AC-n electrodes at corresponding current densities (Figure 5d and Table S1). Moreover, the supercapacitive performance of AC-Zn-CP is superior to plenty of advanced carbon electrodes, such as NPC-L, 24 carbon nanotube sponge, 25 PGBC, 26 P-doped CNT, 27 carbon-PANI, 28 and NPC. 29 The excellent capacitances of AC-Zn-CP are mainly associated with the notable specific surface area, which is correlated with the ion-storage on electrode surfaces, and the hierarchical pores are also beneficial to the transportation of ions.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Coordination Polymer Derived Porous Carbon Activated in Situ by the ZnCl₂ Dot: Capacitances Greatly Enhanced by Redox-Activity Additives in Electrolytes

Chu

Meng

et al. 2021

Langmuir

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Herein, a 1D zinc coordination polymer [Zn(bibp)Cl2]∞ (CP-2-ZX) was assembled from the reaction of 4,4′-bis(imidazol-1-yl)-biphenyl (bibp) with ZnCl2. Through a calcination-thermolysis strategy, sponge-like highly porous carbon AC-Zn-CP was prepared by employing the coralloid sample of CP-2-ZX as the precursor. For comparisons, a series of activated carbon (AC-n) was obtained by the similar heating process on the mixture of bibp with ZnCl2 at different mass ratios. The results illustrate that the atomically dispersed ZnCl2 dot in the 1D chain of CP-2-ZX has an in situ activation effect on the generation of AC-Zn-CP, which can greatly promote the porosity and achieve high-efficiency utilization of ZnCl2. Therefore, the atomically dispersed activating agent provides a new method for environmentally friendly production of porous carbon materials. Significantly, the AC-Zn-CP electrode displays specific capacitance of 215 F g–1 in 3 M KOH solution, which will be largely promoted to 1419 F g–1 in the redox active electrolyte of K3[Fe(CN)6]/KOH. AC-Zn-CP also shows remarkable cycling stability (the capacity retention is 89.0% after 5000 cycles). Moreover, the fabricated symmetric supercapacitor owns a high energy density of 34.8 Wh kg–1 at 785.5 W kg–1. So, the AC-Zn-CP∩K3[Fe(CN)6] system has wide application prospects in supercapacitors.

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Adsorption Behavior of Congo Red onto Barium-Doped ZnO Nanoparticles: Correlation between Experimental Results and DFT Calculations

Cited by 44 publications

References 67 publications

Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

Antioxidant and Antiinflammatory Activity of Titanium Dioxide Nanoparticles Synthesised Using Mucuna pruriens

Coordination Polymer Derived Porous Carbon Activated in Situ by the ZnCl₂ Dot: Capacitances Greatly Enhanced by Redox-Activity Additives in Electrolytes

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Adsorption Behavior of Congo Red onto Barium-Doped ZnO Nanoparticles: Correlation between Experimental Results and DFT Calculations

Cited by 44 publications

References 67 publications

Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods

Antioxidant and Antiinflammatory Activity of Titanium Dioxide Nanoparticles Synthesised Using Mucuna pruriens

Coordination Polymer Derived Porous Carbon Activated in Situ by the ZnCl2 Dot: Capacitances Greatly Enhanced by Redox-Activity Additives in Electrolytes

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Coordination Polymer Derived Porous Carbon Activated in Situ by the ZnCl₂ Dot: Capacitances Greatly Enhanced by Redox-Activity Additives in Electrolytes