Efficient sorption and photocatalytic degradation of malachite green dye onto NiS nanoparticles prepared using novel green approach

Prasad, Kumar Suranjit; Prajapati, Sheel; Selvaraj, Kaliaperumal

doi:10.1007/s11814-015-0041-y

Cited by 14 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… Adsorbent Q max (mg g −1 ) Ref. Super paramagnetic sodium alginate-coated Fe 3 O 4 -NPs 47.84 48 Graphene oxide/cellulose bead composites 30.09 49 Montmorillonite clay 262.5 50 Starch-graft-poly(acrylamide)/GO/hydroxyapatite nanocomposite 297.0 51 Fe 3 O 4 @SiO 2 -GO 265.9 52 3D magnetic bacterial cellulose nanofiber/GO polymer aerogel 270.3 13 Hematite-reduced graphene oxide composites 438.8 53 Nano-iron oxide-loaded alginate microspheres 2.30 54 Tin oxide nanoparticle loaded on activated carbon 142.9 55 Gold nanoparticles loaded on activated carbon 164.6 56 NiS nanoparticles synthesized using plant leaf extract 64.85 57 TiO 2 Nanoparticles 6.30 58 Activated carbon/CoFe 2 O 4 composite 89.29 59 Graphene oxide and reduced graphene oxi...…”

Section: Resultsmentioning

confidence: 99%

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Arabkhani

Javadian

Asfaram

et al. 2021

Sci Rep

View full text Add to dashboard Cite

In this research, mesoporous calcium aluminate nanostructures (meso-CaAl2O4) were synthesized using a citric acid-assisted sol–gel auto-combustion process as the potential adsorbent to eliminate toxic triphenylmethane dye malachite green (MG) from synthetic/real effluent. The surface morphology of meso-CaAl2O4 was highly porous with nanometric size and non-homogeneous surface. The specific surface area, total pore volume, and BJH pore diameter of meso-CaAl2O4 were 148.5 m2 g−1, 1.39 cm3 g−1, and 19 nm, respectively. The meso-CaAl2O4 also showed a very high heat resistance, due to losing only 7.95% of its weight up to 800 °C, which is mainly related to the moisture loss. The optimal adsorption conditions were obtained based on response surface methods (RSM)-central composite design (CCD) techniques. The Langmuir isotherm model was used for fitting the adsorption measurements, which presented 587.5 mg g–1 as the maximum adsorption capacity of the dye. The data obtained from the adsorption kinetics model were found to correspond to the pseudo-second-order model. Also, the thermodynamic parameters including enthalpy change (ΔH°), entropy change (ΔS°), and Gibbs free energy change (ΔG°) indicated that MG dye adsorption by the meso-CaAl2O4 was feasible, endothermic, and occurred spontaneously. Furthermore, the meso-CaAl2O4 was regenerated by microwave irradiation under 900 W at 6 min, and the MG dye removal efficiency was remained over 90% after the five cycles of microwave regeneration.

show abstract

Section: Resultsmentioning

confidence: 99%

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Arabkhani

Javadian

Asfaram

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

Surface Roughening Strategy for Highly Efficient Bifunctional Electrocatalyst: Combination of Atomic Layer Deposition and Anion Exchange Reaction

et al. 2021

View full text Add to dashboard Cite

nontoxic, abundant, and durable catalysts with high activity toward the oxygen and hydrogen evolution reactions (OER and HER, respectively) are preferred. [3] Electrode material and architecture play critical roles in electrocatalytic water splitting. [4] Electrochemical reactions occur at the electrode-electrolyte interface; therefore, electrochemical processes are interfacedependent. Typically, only a fraction of the exposed sites, namely the surface active sites, participates in the electrochemical charge transfer process (Scheme 1a). The electrochemically active surface area (ECSA) generated by the electrical double layer formed at the electrode-electrolyte interface features numerous inactive surface sites that do not participate in electrochemical charge transfer (electronation-deelectronation). Building 3D architectures with large ECSAs is a common method for increasing active surface sites and accelerating electrochemical water splitting (Scheme 1b). In particular, coreshell architectures are highly desirable for good electrode performance because they combine the distinct properties of the core and shell materials used to build multifunctional electrodes. [5] For example, core-shell electrodes with NiCo 2 S 4 (NCS) cores and various shell structures have been evaluated for electrocatalytic water splitting. [6] However, coreshell architectures lengthen the electron transport pathways and increase electrode mass and interfacial resistance, hindering the efficient electrode utilization. The increase in total mass results in lower mass activity, although the estimated electrochemical performance of the core-shell structure is superior to that of the core structure as a function of the geometric area of the electrodes. Hence, developing innovative electrode nano-architectures to increase the N A with higher mass activity is an important task for developing commercial electrochemical energy conversion and storage devices. Nano-roughening the outer surfaces of nanostructures is an advanced method for increasing N A . It has similar ECSAs compared to conventional core-shell structures, but a greater proportion of active sites and massive mass activity. The ECSAs of the structures in Scheme 1b,d are the same; however, the ratio of active to inactive sites of the structure in Scheme 1d is higher than that of the structure in Scheme 1b. This can be achieved using several approaches, such as top-down physical etching, controlled Electrocatalytic water splitting, which is an interface-dominated process, can be significantly accelerated by increasing the number of front-line surface active sites (N A ) of the electrocatalyst. In this study, a unique method is used for increasing the N A by converting the smooth ultrathin atomic-layer-deposited nanoshells of the electrocatalysts into nano-roughened active shell layers using a controlled anion-exchange reaction (AER). The coarse thin nanoshells present abundant surface active sites, which are generated owing to the inherent unit-cell volume mismatch induced during th...

show abstract

Treatment of malachite green dye using combined oxidation techniques based on different irradiation

Gole

Alhat²

2017

Korean J. Chem. Eng.

View full text Add to dashboard Cite

Efficient sorption and photocatalytic degradation of malachite green dye onto NiS nanoparticles prepared using novel green approach

Cited by 14 publications

References 35 publications

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration

Surface Roughening Strategy for Highly Efficient Bifunctional Electrocatalyst: Combination of Atomic Layer Deposition and Anion Exchange Reaction

Treatment of malachite green dye using combined oxidation techniques based on different irradiation

Contact Info

Product

Resources

About