Preparation of NiO/MWCNTs nanocomposite for the removal of cadmium ions

Al-Kadhi, Nada S.; Pashameah, Rami Adel; Ahmed, Hoda A.; Alrefaee, Salhah H.; Alamro, Fowzia S.; Faqih, Hana Hassan; Mwafy, Eman A.; Mostafa, Ayman M.

doi:10.1016/j.jmrt.2022.05.149

Cited by 23 publications

(7 citation statements)

References 84 publications

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“…In SEM images of the Co 3 O 4 /MWCNT/PPSF/GCE, it was seen that the Co 3 O 4 nanoparticles as the nanocubes shapes of small sizes (mean diameter of 189 nm) and irregular growth on the MWCNT/PPSF/GCE can be observed in the magnified images in Figure 1C and D. The carboxyl functional groups present on MWCNTs facilitate ionic bonding of metal ions or covalent coupling with various metal oxides [33,34]. The EDX elemental analyze was confirmed the presence of Co,C, Oand N atoms in the Co 3 O 4 /MWCNT/PPSF composite structure.vThe voltammetric behaviour of the GCE, PPSF/GCE, MWCNT/PPSF/GCE and Co 3 O 4 /MWCNT/PPSF/GCE was determined using CV in a 0.1 mol L −1 KCl and 5.0 mmol L −1 K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ] solution at a scan rate of 0.05 Vs −1 .…”

Section: Resultsmentioning

confidence: 77%

Section: Characterisation Of the Modified Electrodesmentioning

confidence: 96%

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Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Dursun

Aktürk

2023

Electroanalysis

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The preparation and characterisation of a new composite electrode with Co3O4 particles‐modified multi‐walled carbon nanotube (MWCNT) and poly(phenosafranine), as well as its novel application for the voltammetric detection of rutin was described. The resulting composite electrode was characterised using scanning electron microscopy (SEM), X‐ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). In the optimised experimental conditions, the oxidation peak current (Ipa) of rutin showed a linear increase in concentration, between 0.008–0.6 and 0.80–6.0 μmol L−1, with a detection limit of 0.00379 μmol L−1. Due to its good selectivity and stability, the composite electrode was successfully applied in detecting rutin in pharmaceutical formulations.

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Section: Resultsmentioning

confidence: 77%

Section: Characterisation Of the Modified Electrodesmentioning

confidence: 96%

Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Dursun

Aktürk

2023

Electroanalysis

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“…Increasing the temperature onward from this point up to 800 °C shows a negligible weight loss for NiO, indicating its thermal stability. For nanocomposite samples, a distinct weight loss is observed from 450 to 575 °C due to the oxidation-induced breakdown of functional moieties on the surfaces of MWCNTs . This region is used to calculate the MWCNT contents in the nanocomposite samples and is found to be ∼8.20 wt %.…”

Section: Results and Discussionmentioning

confidence: 99%

“…For nanocomposite samples, a distinct weight loss is observed from 450 to 575 °C due to the oxidationinduced breakdown of functional moieties on the surfaces of MWCNTs. 37 This region is used to calculate the MWCNT contents in the nanocomposite samples and is found to be ∼8.20 wt %.…”

Section: Resultsmentioning

confidence: 99%

Nanometer-thin ZrO₂ Coating for NiO on MWCNTs as Anode for Improved Performance of Sodium-Ion Batteries

Subhan

Rehman

Alwadai

et al. 2023

ACS Appl. Nano Mater.

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A very simple coprecipitation approach is adopted to prepare ZrO2-coated NiO on MWCNTs nanocomposites with NiO nanoparticles within 10–15 nm size. The XPS studies confirm the presence of Zr, Ni, C, and O elements in the sample, while the BET and BJH analyses reveal a typical surface area of 204.44 m2 g–1 with pores between 10 and 15 nm. The electrochemical performance studies of the ZrO2-coated nanocomposite electrode show a higher charge/discharge capacity of 688.3/688.7 mAh g–1 after 200 cycles with excellent retention capacity (96%) and cycling stability. A minor capacity fading has been observed in the rate performance of the electrodes at currents ranging from 100 to 5000 mA g–1. It also reveals that coin cells tend to maintain their maximum Coulombic efficiency of 99.9% at a low current density, revealing a notable reversible capacity. Therefore, adding MWCNTs significantly increases electrochemical performance and prevents pulverization of active materials. While structural flexibility helps in mitigating the volumetric expansion. During the cycling process, the ZrO2 coating helps improve structural stability and facilitate the diffusion of Na ions.

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“…The rational design of membrane materials for Li + /Mg 2+ separation requires understanding the electric double layer (EDL), electrolyte solution flow, and ionic species' intrinsic properties. Nada et al 36 perform molecular dynamics (MD) simulation to study the nanofiltration process of water and heavy metal ions in nanotubes. Under an external electric field, carbon nanotubes and boron nitride nanotubes showed high retention of several heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

A Molecular Model for Understanding the Membrane Separation of Li⁺/Mg²⁺

Chen

Tao

Cheng

et al. 2023

Ind. Eng. Chem. Res.

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High-purity lithium chloride is used in energy storage applications. A possible process to obtain it is through the separation of Li + and Mg 2+ ions from salt-lake brines with a high mass ratio of Mg 2+ /Li + . This separation can be achieved by nanofiltration and is not only important but also environmentally friendly. It requires a deep understanding of the competitive transport of Li + /Mg 2+ ions in the nanoscale. It is expected to be achieved by theoretical approaches since it remains a challenge for experimental observation. Here, a theoretical model combining the classical density functional theory (CDFT) with the Navier− Stokes (NS) equations was developed to study the selective separation of Li + /Mg 2+ ions in charged nanochannels. We found nanochannels have selectivity for the co-ions with a smaller radius and lower valence state, and the relationship between ion selectivity and surface potential is approximately exponential. Finally, we proposed an accurate empirical formula to characterize the influence of the pore structure, surface properties in the Li + /Mg 2+ separation performance, indicating that our work provides an effective approach to studying selective ionic transport.

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Preparation of NiO/MWCNTs nanocomposite for the removal of cadmium ions

Cited by 23 publications

References 84 publications

Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Nanometer-thin ZrO₂ Coating for NiO on MWCNTs as Anode for Improved Performance of Sodium-Ion Batteries

A Molecular Model for Understanding the Membrane Separation of Li⁺/Mg²⁺

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Preparation of NiO/MWCNTs nanocomposite for the removal of cadmium ions

Cited by 23 publications

References 84 publications

Fabrication of Co3O4 particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Fabrication of Co3O4 particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Nanometer-thin ZrO2 Coating for NiO on MWCNTs as Anode for Improved Performance of Sodium-Ion Batteries

A Molecular Model for Understanding the Membrane Separation of Li+/Mg2+

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Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Fabrication of Co₃O₄ particles‐modified multi‐walled carbon nanotube and poly(phenosafranine) composite electrode for selective and sensitive rutin detection

Nanometer-thin ZrO₂ Coating for NiO on MWCNTs as Anode for Improved Performance of Sodium-Ion Batteries

A Molecular Model for Understanding the Membrane Separation of Li⁺/Mg²⁺