Carbon quantum dots/layered double hydroxide hybrid for fast and efficient decontamination of Cd(II): The adsorption kinetics and isotherms

Rahmanian, Omid; Dinari, Mohammad; Abdolmaleki, Mahmood Karimi

doi:10.1016/j.apsusc.2017.09.152

Cited by 123 publications

(35 citation statements)

References 42 publications

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“…After the introduction of N‐CDs, the high‐resolution XPS scan spectrum for N1s (Fig. D) at 400.4 eV and 401.5 eV correspond to Pyrrolic N and Graphic N of N‐CDs, respectively, which is consistent with the results in Supporting Information Figure S4 of N‐CDs …”

Section: Resultssupporting

confidence: 87%

“…3D) at 400.4 eV and 401.5 eV correspond to Pyrrolic N and Graphic N of N-CDs, respectively, which is consistent with the results in Supporting Information Figure S4 of N-CDs. 33 Figure 4A shows the saturation magnetization strengths (Ms) of the magnetic Fe 3 O 4 and HA@Fe 3 O 4 @N-CDs hybrids, which are 37.2 and 13.3 emu/g, respectively. Inset is the suspensions of HA@Fe 3 O 4 @N-CDs hybrids were rapidly separated in 10 s by placing a magnet near the vessel.…”

Section: Xps Analysismentioning

confidence: 99%

“…In particular, CDs can be applied to remove of anionic organic dye owing to CDs contain numerous oxygen‐containing functional groups . Up to date, carbon quantum dots/layered double hydroxide (CDs/LDH) hybrids were fabricated for decontamination of Cd 2+ ion from wastewater, and the results showed these hybrids may be suitable candidates in the eco‐friendly environment . Herein, CDs are becoming a potential material for the removal of a variety of organic, inorganic, and heavy metal pollutants due to active functional groups and strong π–π interfacial interaction among CDs surface.…”

Section: Introductionmentioning

confidence: 99%

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Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Zhou

Xie

et al. 2019

J Biomedical Materials Res

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The trinary hydroxyapatite@Fe3O4@N‐doped carbon dots (HA@Fe3O4@N‐CDs) hybrids were prepared by one‐pot hydrothermal approach and utilized to detect and remove lead ion from aqueous solution. The structures and morphologies of as‐obtained nanorod‐like HA@Fe3O4@N‐CDs hybrids were characterized by X‐ray diffraction, scanning electron microscopy, and X‐ray photoelectron spectroscopy measurements. These HA@Fe3O4@N‐CDs hybrids possess good magnetism by magnetic hysteresis test and multi‐colored fluorescence by the CLSM measurement. Furthermore, the as‐obtained hybrids display excellent biocompatibility by MTT assay. Importantly, the trinary magnetic HA@Fe3O4@N‐CDs hybrids as a green detector and adsorbent of Pb2+ were investigated. The influence of the different pH, the concentration of heavy metal, and the maximum adsorption capacity on removal efficiency was measured in detail. The maximum Pb2+ adsorption capacity on HA@Fe3O4@N‐CDs hybrids is 450 mg/g. The kinetic mechanism was a pseudo‐second order model, and the isotherm data was fitted well by the Langmuir isotherm and Freundlich model. Hence, the nanorod‐like HA@Fe3O4@N‐CDs hybrids could be a multifunctional material with significant potential applications in heavy metal detection and adsorption, bone tissue regeneration, magnetic therapy, and biomedicine. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.

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Section: Resultssupporting

confidence: 87%

Section: Xps Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Zhou

Xie

et al. 2019

J Biomedical Materials Res

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“…There are many ways of removing heavy metals, like chemical precipitation, lime coagulation, reverse osmosis, ion exchange and electrolysis . Among them, the adsorption technique is practical for removing heavy metals because of its high efficiency and low cost . There are many adsorbents for the removal of heavy metal.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of new nitrogen‐ and oxygen‐rich cyclohexanone–formaldehyde resin for fast Cd(II) adsorption in aqueous solution

Dinari

Maleki

Bagheri

2019

Polymer International

Self Cite

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A new structure of cyclohexanone–formaldehyde resin (CFR) was synthesized via in situ condensation reaction of 2,4,6‐tris(p‐formylphenoxy)‐1,3,5‐triazine (TFPA) with CFR. TFPA was prepared by the reaction of cyanuric chloride and p‐hydroxybenzaldehyde and its structure was confirmed using spectroscopic methods and elemental analysis. The structural, thermal and morphological properties of the nitrogen‐ and oxygen‐rich CFR were studied using Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis and field emission scanning electron microscopy. After characterization, the resin was used as an adsorbent for Cd(II) due to the high level of nitrogen and oxygen in its structure. The effects of various parameters such as pH, concentration and time on the adsorption process were studied. The maximum adsorption capacity of cadmium at pH 8 in 5 min was 83.61 mg L−1. The adsorption isotherm was applied to the Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models. Comparing the correlation coefficient (R2), the Langmuir model was fitted well. Pseudo‐first‐order, pseudo‐second‐order, Elivich and intra‐particle diffusion models of adsorption kinetics were explored. The pseudo‐second‐order model can better explain the adsorption kinetics that shows adsorption being dependent on the number of active sites of the adsorbent. © 2019 Society of Chemical Industry

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“…The use of layered fillers such as clay and layered double hydroxides (LDH) in the polymer matrices has attracted great interest in recent years . LDH as layered crystalline inorganic materials with easily exchangeable interlayer ions had wonderful potential as nanofiller for polymers due to their wide application in catalysis, medical applications, stabilizer, fire retardant, sorbent and ion exchangers …”

Section: Introductionmentioning

confidence: 99%

Influence of imide functionalized organo‐modified Mg‐Al layered double hydroxide on the thermal and mechanical properties of new aliphatic‐aromatic poly (amide‐imide)

Hajibeygi

Shafiei-Navid

Shabanian

2018

Applied Organom Chemis

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A new dicarboxylic acid modified Mg‐Al LDH (DLDH) containing imide groups was prepared and its effects on the thermal and mechanical properties of the new synthesized aliphatic‐aromatic poly (amide‐imide) (PAI) were investigated via preparation of PAI/nanocomposite films by solution casting method. The results of X‐ray diffraction (XRD), field emission‐scanning electron microscopy (FE‐SEM) and transmission electron microscopy (TEM) showed a uniform dispersion for LDH layers into the PAI matrix. For comparison, the effects of polyacrylic acid‐co‐poly‐2‐acrylamido‐ 2‐methylpropanesulfonic acid (PAMPS‐co‐PAA) modified Mg‐Al LDH (ALDH) on the PAI properties were also studied. The thermogravimetric analysis (TGA) results exhibited that the temperature at 5 mass% loss (T5) increased from 277 °C to 310 °C for nanocomposite containing 2 mass% of DLDH, while T5 for nanocomposite containing 2 mass% of ALDH increased to 320 °C, along with the more enhancement of char residue compared to the neat PAI. According to the tensile test results, with 5 mass% DLDH loading in the PAI matrix, the tensile strength increased from 51.6 to 70.8 MPa along with an increase in Young's modulus. Also the Young's modulus of PAI nanocomposite containing 5 mass% ALDH reduced from 1.95 to 0.81 GPa.

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Carbon quantum dots/layered double hydroxide hybrid for fast and efficient decontamination of Cd(II): The adsorption kinetics and isotherms

Cited by 123 publications

References 42 publications

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Synthesis and characterization of new nitrogen‐ and oxygen‐rich cyclohexanone–formaldehyde resin for fast Cd(II) adsorption in aqueous solution

Influence of imide functionalized organo‐modified Mg‐Al layered double hydroxide on the thermal and mechanical properties of new aliphatic‐aromatic poly (amide‐imide)

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Carbon quantum dots/layered double hydroxide hybrid for fast and efficient decontamination of Cd(II): The adsorption kinetics and isotherms

Cited by 123 publications

References 42 publications

Biocompatible HA@Fe3O4@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe3O4@N‐CDs hybrids for detecting and absorbing lead ion

Synthesis and characterization of new nitrogen‐ and oxygen‐rich cyclohexanone–formaldehyde resin for fast Cd(II) adsorption in aqueous solution

Influence of imide functionalized organo‐modified Mg‐Al layered double hydroxide on the thermal and mechanical properties of new aliphatic‐aromatic poly (amide‐imide)

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Product

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Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion