A Novel One-Pot Route for Large-Scale Synthesis of Novel Magnetic CNTs/Fe@C Hybrids and Their Applications for Binary Dye Removal

Ma, Jie; Ma, Yao; Yu, Fei

doi:10.1021/acssuschemeng.7b04668

Cited by 51 publications

(19 citation statements)

References 60 publications

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“…The magnetic property of the CF-0 and CF-2 material was investigated by obtaining magnetic hysteresis curves (Figure e). Hysteresis curves of CF-0 and CF-2 showed a saturation magnetization ( M s ) of value of 0.01 and 19.5 emu g –1 , respectively, at 300 K. It is worth noting here that M s for CF-2 is higher than the earlier reports of magnetic adsorbent carbon-γ-Fe 2 O 3 , CNTs/Fe@C, Fe 3 O 4 /V 2 O 5 /rGO composite, nano-Fe 3 O 4 /baker’s yeast composites, and enough to separate the CF-2 from reaction mixture using an external magnetic field (Figure f). The values of saturation magnetization ( M s ), coercivity ( H c ), remanence ( M r ), and ratio between M r and M s compiled in Table S2, suggests that adsorbent CF-2 is in a superparamagnetic state at room temperature, as the ratios of M r / M s are less than 25%. ,− …”

Section: Resultsmentioning

confidence: 67%

“…Among different dye removal techniques (which are tabulated in Table S1), the adsorption is widely used as a decontamination technique because of high efficiency and wide applicability. A number of carbon-based adsorbents, e.g., graphene-based composites, − carbon nanotubes, and porous carbon, ,, have been explored to remove dyes from the wastewater. The performance of a carbon-layered/nanomaterial could be significantly enhanced due to their high adsorption capacities that originate from the high porosity and surface area. ,,,− In search of an economic and effective carbon-based adsorbent for organic pollutants, different biowastes, e.g., tea waste, cotton fabric, and drum sticks, have been explored.…”

Section: Introductionmentioning

confidence: 99%

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Iron–Carbon Hybrid Magnetic Nanosheets for Adsorption-Removal of Organic Dyes and 4-Nitrophenol from Aqueous Solution

Manippady

Singh

Basavaraja

et al. 2020

ACS Appl. Nano Mater.

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Here, we report a nonprecious mesoporous adsorbent obtained from the carbonization of bagasse. The material shows an impressive pH-dependent adsorbent property for cationic, anionic, and commercially used dyes along with an organic contaminant (4nitrophenol) in water. The adsorbent shows specific surface area of ∼462 m 2 g −1 and the porous layered structure as confirmed by gas adsorption and microscopic techniques, respectively. Further, pH triggered adsorption of methylene blue (MB, cationic dye), Congo red (CR, anionic dye), and commercial hair dye were studied. The results show >96% adsorption for CR and MB within 24 min at pH 2 and pH 8, respectively. Moreover, fast adsorption response, 92.6% in 20 min, was obtained for a commercially used hair dye and demonstrates the practical applicability of the material for wastewater remediation. Under experimental conditions, adsorbent shows ultrafast adsorption kinetics (4 min to achieve equilibrium state with 99.5% adsorption) for 4-nitrophenol from water. Notably, the adsorbent shows structural stability, easily separable with an external magnetic field, and recyclability with ∼85% efficiency even after the fifth cycle.

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Section: Resultsmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Iron–Carbon Hybrid Magnetic Nanosheets for Adsorption-Removal of Organic Dyes and 4-Nitrophenol from Aqueous Solution

Manippady

Singh

Basavaraja

et al. 2020

ACS Appl. Nano Mater.

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“…NMs and CMNHs are expected to be stable when solution pH is far away from their pH PZC (pH of point of zero charge); but tend to aggregate at their pH PZC where net surface charge approaches zero. The pH PZC of CNTs, GFNs, CDs, and g-C 3 N 4 is reported at 3–4, , 2.5–3, ,− 2.0–2.5, and 4–5, , respectively (Figure ). Compared to CNMs, MNPs have higher pH PZC , for example, Al 2 O 3 (pH PZC 8–10), Fe x O y (pH PZC 7–9.5), TiO 2 (pH PZC 6–7.8), and ZnO (pH PZC 7.5–10.2) (Figure ).…”

Section: Energy Water and Environmental Applications Of Cmnhsmentioning

confidence: 98%

“…Reported pH of point of zero charge (pH PZC ) values of CNMs (marked within the red ellipse), CMNHs (marked within the black ellipse), and MNPs (marked within the pink ellipse). Starting from the left x -axis, the first four columns within the red ellipse denote: CNTs (3–4), , GFNs (2.5–3), ,− CDs (2–2.5), and g-C 3 N 4 (4–5), , respectively. The middle 12 dots/columns within the black ellipse denote: RGO–Fe 3 O 4 (3.7), GO–MnFe 2 O 4 (4.85), RGO–TiO 2 (5.2), g-C 3 N 4 –BiOCl–Cu 2 O–Fe 3 O 4 (5.3), graphene-Co 3 O 4 –Fe 2 O 3 (5.3), CDs–CeZrO 2 (5.8), GO–Co 3 O 4 –Au (5.95), RGO–Fe 3 O 4 (5–6), GO–Al–Fe (6.58), RGO–Fe–Mn (7.47–7.56), CDs-γ–Al 2 O 3 (7.6), and RGO–Zn-Fe (7.8) nanohybrids, respectively.…”

Section: Energy Water and Environmental Applications Of Cmnhsmentioning

confidence: 99%

Next-Generation Multifunctional Carbon–Metal Nanohybrids for Energy and Environmental Applications

Wang

Saleh

Sun

et al. 2019

Environ. Sci. Technol.

126

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Nanotechnology has unprecedentedly revolutionized human societies over the past decades and will continue to advance our broad societal goals in the coming decades. The research, development, and particularly the application of engineered nanomaterials have shifted the focus from "less efficient" single-component nanomaterials toward "superior-performance", nextgeneration multifunctional nanohybrids. Carbon nanomaterials (e.g., carbon nanotubes, graphene family nanomaterials, carbon dots, and graphitic carbon nitride) and metal/metal oxide nanoparticles (e.g., Ag, Au, CdS, Cu2O, MoS2, TiO2, and ZnO) combinations are the most commonly pursued nanohybrids (carbon-metal nanohybrids; CMNHs), which exhibit appealing properties and promising multifunctionalities for addressing multiple complex challenges faced by humanity at the critical energy-water-environment (EWE) nexus. In this frontier review, we first highlight the altered and newly emerging properties (e.g., electronic and optical attributes, particle size, shape, morphology, crystallinity, dimensionality, carbon/metal ratio, and hybridization mode) of CMNHs that are distinct from those of their parent component materials. We then illustrate how these important newly emerging properties and functions of CMNHs direct their performances at the EWE nexus including energy harvesting (e.g., H2O splitting and CO2 conversion), water treatment (e.g., contaminant removal and membrane technology), and environmental sensing and

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“…The adsorption isotherm of MO and MB from the prepared hybrids material is shown in Figure 9b. These results suggested that the prepared hybrids had the efficiency to be used as a promising adsorbent for the large-scale applications in binary dye systems, which exhibited a cooperative and competitive adsorption tendency to address the dye pollution effectively [139]. Lee and coworkers fabricated MWCNTs-based polyaniline (PANi)/polyether sulfone (PES) membranes by in situ polymerization of aniline in the presence of MWCNTs for the effective removal of natural organic matter (NOM) in water.…”

Section: Wastewater Treatmentmentioning

confidence: 99%

Carbon Nanotubes-Based Nanomaterials and Their Agricultural and Biotechnological Applications

et al. 2020

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Carbon nanotubes (CNTs) are considered a promising nanomaterial for diverse applications owing to their attractive physicochemical properties such as high surface area, superior mechanical and thermal strength, electrochemical activity, and so on. Different techniques like arc discharge, laser vaporization, chemical vapor deposition (CVD), and vapor phase growth are explored for the synthesis of CNTs. Each technique has advantages and disadvantages. The physicochemical properties of the synthesized CNTs are profoundly affected by the techniques used in the synthesis process. Here, we briefly described the standard methods applied in the synthesis of CNTs and their use in the agricultural and biotechnological fields. Notably, better seed germination or plant growth was noted in the presence of CNTs than the control. However, the exact mechanism of action is still unclear. Significant improvements in the electrochemical performances have been observed in CNTs-doped electrodes than those of pure. CNTs or their derivatives are also utilized in wastewater treatment. The high surface area and the presence of different functional groups in the functionalized CNTs facilitate the better adsorption of toxic metal ions or other chemical moieties. CNTs or their derivatives can be applied for the storage of hydrogen as an energy source. It has been observed that the temperature widely influences the hydrogen storage ability of CNTs. This review paper highlighted some recent development on electrochemical platforms over single-walled CNTs (SWCNTs), multi-walled CNTs (MWCNTs), and nanocomposites as a promising biomaterial in the field of agriculture and biotechnology. It is possible to tune the properties of carbon-based nanomaterials by functionalization of their structure to use as an engineering toolkit for different applications, including agricultural and biotechnological fields.

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A Novel One-Pot Route for Large-Scale Synthesis of Novel Magnetic CNTs/Fe@C Hybrids and Their Applications for Binary Dye Removal

Cited by 51 publications

References 60 publications

Iron–Carbon Hybrid Magnetic Nanosheets for Adsorption-Removal of Organic Dyes and 4-Nitrophenol from Aqueous Solution

Iron–Carbon Hybrid Magnetic Nanosheets for Adsorption-Removal of Organic Dyes and 4-Nitrophenol from Aqueous Solution

Next-Generation Multifunctional Carbon–Metal Nanohybrids for Energy and Environmental Applications

Carbon Nanotubes-Based Nanomaterials and Their Agricultural and Biotechnological Applications

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