Fast adsorption kinetics of highly dispersed ultrafine nickel/carbon nanoparticles for organic dye removal

Kim, Taek Seung; Song, Hee Jo; Dar, Mushtaq Ahmad; Lee, Hack Jun; Kim, Dong Wan

doi:10.1016/j.apsusc.2018.01.061

Cited by 78 publications

(28 citation statements)

References 23 publications

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“…Mo‐based colloidal solution were synthesized by a facile and mass‐scalable EWE technique 7,21 . Using electrical pulse equipment (NTI 10C, 320 V of charging voltage, Nano Technology Inc.), a Mo wire (diameter of 0.2 mm) was exploded in deionized water (DIW), methanol (CH 3 OH, MeOH), and ethanol (C 2 H 5 OH, EtOH).…”

Section: Methodsmentioning

confidence: 99%

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Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

et al. 2021

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Summary In this study, a free‐standing MoS2 nanofilm on a porous carbon cloth (MoS2@PCC) was prepared for application as an anode in Li‐ion batteries. Uniform, non‐aggregated MoS2@PCC electrodes were synthesized via facile electric‐wire‐explosion, dip‐coating, and thermal sulfidation processes. The phase and morphologies were controlled using a variety of explosion media that had different carbon contents. The dip‐coating of PCC into a colloidal solution prepared by underwater explosion of Mo metallic wire and the thermal sulfidation process provided higher uniformity of MoS2 nanoparticles with no particle aggregation. This facilitated the charge transfer and accommodation of volume expansion of Li‐active MoS2 upon cycling. Consequently, the free‐standing MoS2@PCC electrodes exhibited enhanced lithium reactivity, high rate capability, and cycle durability, compared with the conventional MoS2 nanoparticle electrode.

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Section: Methodsmentioning

confidence: 99%

“…PCC was fabricated by thermal etching of bare‐CC, which was described in the previous reports 21 . MoO x @PCC was prepared by simple dip‐coating process, which previously reported our report 22 .…”

Section: Methodsmentioning

confidence: 99%

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

et al. 2021

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“…In addition, the sample with the lowest Ni/BAC ratio (BACNi-10) and the highest speci c surface area showed the best adsorption result, evidenced by the lower remaining concentration of MB in solution (5.47 ppm). This relatively low amount of Ni in this material is su cient to allow the removal of the magnetic adsorbent from the MB synthetic solution by magnetic attraction (Calimli et al 2020;Kim et al 2018;Tao et al 2019). The Effect Table, Table 6, presents the effect of an independent variable and the interaction between independent variables (the factors) in a dependent variable (the response variable), within a 95% con dence limit.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Production of an Efficient Magnetic Adsorbent From Babassu Coconut Endocarp and Ni Particles for Easy Dye Removal From Mimetic Contaminated Effluents

Silva¹,

Santos²,

Freitas³

et al. 2021

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Ni metal particles, with sizes ranging from 70 to 110 nm, dispersed in activated carbon produced from the babassu coconut endocarp (BAC) were successfully synthesized and evaluated by scanning electron microscopy, dispersive energy X-ray spectroscopy, flame atomic absorption spectroscopy and powder X-ray diffraction. These hybrid BACNi-X materials (where X is the Ni / BAC ratio, equal to 10, 20 or 30) exhibit crystalline Ni particles with suitable magnetic properties, shown by increased saturation magnetization and a gradual reduction in coercive fields (varying 80 to 150 Oe) as the Ni content increases. Relatively large values of pore volume (in the range of 0.28-0.37 cm3/g), specific surface area (560-740 m2/g) are achieved, favoring their applications for magnetic remediation of mimetic contaminated effluents. All hybrid samples were tested positively for the adsorption of methylene blue in contaminated synthetic effluents and the greatest removal was achieved by the hybrid sample BACNi-10, which has the largest specific area and reasonable magnetic properties that allowed the manipulation of the sample by an external field.

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“…12). The positive enthalpy ∆H and the negative free energy ∆G (Table 5) indicate an endothermic and spontaneous physisorption [50].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Hydrothermal Synthesis and Characterization of K7V5W8O40·12H2O: Application to Rhodamine B Removal by Adsorption/Photocatalysis

et al. 2020

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The vanadotungstate K 7 V 5 W 8 O 40 •12H 2 O synthesized by hydrothermal route at 453 K was reported for the first time. The compound crystallizing in a Keggin type structure was characterized by powder X-ray diffraction, FTIR spectroscopy and UV-Vis diffuse reflectance; it was successfully tested for the removal of Rhodamine B (Rh B). The effects of contact time, initial concentration and pH were investigated. The adsorption capacity reached ~ 40% in aqueous solution within 16 h. Pseudo-first-order, pseudo-second-order, Elovich and intra-particle diffusion models were applied to fit the experimental data. The pseudo-second-order was the best to describe the adsorption. The equilibrium isotherms were also analyzed by different models. Negative free enthalpy (ΔG) suggested that adsorption Rh B is spontaneous. The positive enthalpy (ΔH) entropy (ΔS) indicated endothermic process with an increase in the randomness of the solid/liquid interface. The compound showed 42% degradation of the remaining concentration after 4 h exposure to solar radiation.

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Fast adsorption kinetics of highly dispersed ultrafine nickel/carbon nanoparticles for organic dye removal

Cited by 78 publications

References 23 publications

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

Free‐standing molybdenum disulfides on porous carbon cloth for lithium‐ion battery anodes

Production of an Efficient Magnetic Adsorbent From Babassu Coconut Endocarp and Ni Particles for Easy Dye Removal From Mimetic Contaminated Effluents

Hydrothermal Synthesis and Characterization of K7V5W8O40·12H2O: Application to Rhodamine B Removal by Adsorption/Photocatalysis

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