Comparative study of Ni(<scp>ii</scp>) adsorption by pristine and oxidized multi-walled N-doped carbon nanotubes

Balog, Renata; Manilo, Maryna; Vanyorek, László; Csoma, Zoltán; Bárány, Sándor

doi:10.1039/c9ra09755d

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…This is additionally supported by shifting of the hydroxyl band of GG to higher wavenumber, as similar observations were made for GG‐ g ‐poly(acrylamide‐aniline) and hemicelluloses/PAA‐IPN 48, 59. The FTIR spectrum of O‐MWCNTs revealed that oxidized functional groups (OH and COOH) were present after modification by HNO 3 60, 61. Owing to similarities in the spectra of O‐MWCNT and GG‐ g ‐PAA/O‐MWCNT, it is difficult to estimate the loading of O‐MWCNT on GG‐ g ‐PAA, but XRD patterns clearly revealed the loading of O‐MWCNT on GG‐ g ‐PAA.…”

Section: Resultsmentioning

confidence: 99%

“…The FTIR spectrum of O-MWCNTs revealed that oxidized functional groups (OH and COOH) were present after modification by HNO 3 [60,61]. Owing to similarities in the spectra of O-MWCNT and GG-g-PAA/O-MWCNT, it is difficult to estimate the loading of O-MWCNT on GG-g-PAA, but XRD patterns clearly revealed the loading of O-MWCNT on GG-g-PAA.…”

Section: Ftir Spectra Of Hydrogelsmentioning

confidence: 99%

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Synthesis of a Polyacrylic‐Grafted, Multiwalled Carbon Nanotube‐Loaded Gum Ghatti Hydrogel for Diclofenac Removal

Dave

Chopda²,

Kamaliya

2023

Chem Eng & Technol

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Water pollution causes health‐ and environment‐related problems. Adsorption of pollutants from the bulk is an efficient method for their removal. Modified biopolymers have proven to be effective adsorbents. The biopolymer gum ghatti (GG) has shown good adsorption properties. In this work, GG was grafted with polyacrylic acid (PAA) and loaded with oxidized multiwalled carbon nanotubes (O‐MWCNTs). The resulting GG‐g‐PAA/O‐MWCNT hydrogel was characterized by FT‐IR, XRD, and SEM and its adsorption activity was examined. Sodium diclofenac (SD) was efficiently removed by GG‐g‐PAA/O‐MWCNT. The highest removal efficiency of 92.89 % was achieved at pH 2. The adsorption of SD followed the Langmuir adsorption isotherm and pseudo‐second‐order model.

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Section: Resultsmentioning

confidence: 99%

Section: Ftir Spectra Of Hydrogelsmentioning

confidence: 99%

Synthesis of a Polyacrylic‐Grafted, Multiwalled Carbon Nanotube‐Loaded Gum Ghatti Hydrogel for Diclofenac Removal

Dave

Chopda²,

Kamaliya

2023

Chem Eng & Technol

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“…Heteroatom doping is associated with the development of new technologies such as electrocatalysts and supercapacitors [ 30 , 31 ] due to the doping effect on the optical, electronic, and structural properties of carbon NMs. The use of doped carbon NMs for adsorption of pollutants from water was reported by several studies [ 32 , 33 , 34 ]. The adsorption affinity and selectivity of carbon NMs toward different pollutants (organic or inorganic) can be modified by doping heteroatoms into the carbon lattice.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Nitrogen-Doped Porous Carbon Nanocomposite for Pb(II) Adsorption from Aqueous Solution

et al. 2021

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We report in the present study the in situ formation of magnetic nanoparticles (Fe3O4 or Fe) within porous N-doped carbon (Fe3O4/N@C) via simple impregnation, polymerization, and calcination sequentially. The synthesized nanocomposite structural properties were investigated using different techniques showing its good construction. The formed nanocomposite showed a saturation magnetization (Ms) of 23.0 emu g−1 due to the implanted magnetic nanoparticles and high surface area from the porous N-doped carbon. The nanocomposite was formed as graphite-type layers. The well-synthesized nanocomposite showed a high adsorption affinity toward Pb2+ toxic ions. The nanosorbent showed a maximum adsorption capacity of 250.0 mg/g toward the Pb2+ metallic ions at pH of 5.5, initial Pb2+ concentration of 180.0 mg/L, and room temperature. Due to its superparamagnetic characteristics, an external magnet was used for the fast separation of the nanocomposite. This enabled the study of the nanocomposite reusability toward Pb2+ ions, showing good chemical stability even after six cycles. Subsequently, Fe3O4/N@C nanocomposite was shown to have excellent efficiency for the removal of toxic Pb2+ ions from water.

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A biomass carbon prepared from agricultural discarded walnut green peel: investigations into its adsorption characteristics of heavy metal ions in wastewater treatment

Zhu

et al. 2022

Biomass Conv. Bioref.

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Comparative study of Ni(ii) adsorption by pristine and oxidized multi-walled N-doped carbon nanotubes

Abstract: The principles and mechanisms of adsorption of Ni(ii) ions by well characterized pristine and oxidized N-doped multi-walled carbon nanotubes (N-CNTs) are described and discussed.

Cited by 11 publications

References 23 publications

Synthesis of a Polyacrylic‐Grafted, Multiwalled Carbon Nanotube‐Loaded Gum Ghatti Hydrogel for Diclofenac Removal

Synthesis of a Polyacrylic‐Grafted, Multiwalled Carbon Nanotube‐Loaded Gum Ghatti Hydrogel for Diclofenac Removal

Magnetic Nitrogen-Doped Porous Carbon Nanocomposite for Pb(II) Adsorption from Aqueous Solution

A biomass carbon prepared from agricultural discarded walnut green peel: investigations into its adsorption characteristics of heavy metal ions in wastewater treatment

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