Magnetite nano-spherical quantum dots decorated graphene oxide nano sheet (GO@Fe3O4): Electrochemical properties and applications for removal heavy metals, pesticide and solar cell

El‐Shafai, Nagi M.; Abdelfatah, Mahmoud; El‐Khouly, Mohamed E.; El‐Mehasseb, Ibrahim M.; El-Shaer, Abdelhamid; Ramadan, Mohamed; Masoud, Mamdouh S.; El‐Kemary, Maged

doi:10.1016/j.apsusc.2019.144896

Cited by 80 publications

(25 citation statements)

References 44 publications

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“…The band gap is determined by the extrapolation of linear portion of the curve on the hv axis to (αhv) 2 = 0. [46][47][48] The band gaps of pure Fe 3 O 4 , pristine PPy and Fe 3 O 4 @PPy nanocomposite are found to be 1.5 eV, 1.3 eV, and 0.4 eV, respectively. The values of band gaps for Fe 3 O 4 NPs and pristine PPy are close to the values given in literature.…”

Section: Characterizationmentioning

confidence: 99%

NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy

Getiren

Çıplak

Gökalp

et al. 2020

J of Applied Polymer Sci

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In this work, superparamagnetic Fe3O4@PPy nanocomposite with core‐shell structure having strong near‐infrared (NIR) absorption is synthesized via a facile two‐step modified procedure. The prepared nanocomposite samples are characterized by UV–vis, FTIR, SEM, TEM, VSM, and XRD. The effects of laser power density (1.5–2.5 W cm−2) and aqueous concentration (0.01–0.2 mg ml−1) of the nanocomposite on the photothermal performance are investigated in the NIR region (808 nm). At 0.1 mg ml−1 concentration, the temperature reaches up to 50.1°C, 64.1°C, and 78.4°C within 10 min, under 1.5 W cm−2, 2.0 W cm−2, and 2.5 W cm−2 NIR laser power density values, respectively. Photothermal conservation efficiency is calculated as 43.9% and the nanocomposite exhibits excellent photothermal stability. In summary, the core‐shell Fe3O4@PPy nanocomposite is a promising candidate for photothermal therapy and simultaneous magnetic field‐guided treatments.

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Section: Characterizationmentioning

confidence: 99%

NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy

Getiren

Çıplak

Gökalp

et al. 2020

J of Applied Polymer Sci

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“…We observed a quenching effect of the nanocomposite under visible light, resulting in characteristic peaks at 664 nm for MB and 560 nm for RhB. The rate constants of the reactions were evaluated using equation (2) [10,11]:…”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Nanoparticles (notably ZnO and CuO NPs) also have important applications in solar-powered devices, specifically in the form of quantum dots due to their small bandgaps [8]. Water desalination treatments often use GO with titanium dioxide, zinc oxide, and magnetite NPs [9][10][11] that have high water solubility, biological properties, and low cost [12]. In addition, cellulose derivatives such as sodium carboxymethyl cellulose (CMC) have various biological applications [13].…”

Section: Introductionmentioning

confidence: 99%

Bismuth/bismuth oxide-incorporated reduced graphene oxide nanocomposite: synthesis, characterisation, and photocatalytic activity

Algethami

2022

Mater. Res. Express

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This study loaded Bi/Bi2O3 on the surface of reduced graphene oxide (rGO) to perform a two-step facile synthesis of rGO@Bi/Bi2O3 as a bismuth-based nanocomposite. First, Bi/Bi2O3 nanocomposites were synthesised via a solvothermal process using Bi(NO3)3·5H2O as the Bi3+ precursor and dimethyl sulfoxide (DMSO) as the solvent. Second, we exfoliated rGO in water to functionalise Bi/Bi2O3 with a few layers of rGO. Obtained nanocomposites were characterised with scanning electron microscopy and x-ray diffraction. We also measured the nanocomposites’ photocatalytic activity using cationic dyes, specifically methylene blue (MB) and rhodamine B (RhB). Additionally, ultraviolet-visible spectroscopy was used to determine the optical properties of rGO@Bi/Bi2O3. Photodegradation was recorded under differing durations of exposure to visible light. Reaction rates were recorded at 14.6 × 10-4 min-1 and 22.2 × 10-3 min-1 for MB and RhB, respectively, while photodegradation efficiency was logged at 17% and 81%.

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“…Many researchers have utilized Fe 3 O 4 to adsorb dissolved species in industrial wastewater [ 23 ]. Nagi et al applied nano-spherical quantum dots of Fe 3 O 4 to remove heavy metals such as Cr, Co, and pesticides [ 35 ]. Additionally, Elhassan et al exploited the adsorption behavior of magnetite along with other nano metal oxides with components such as Cu 2+ , Pb 2+, Cr +4 , Cd 2+ and Ni 2+ , to remove atrazine and bisphenol-A from wastewater [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetic Fe3O4 Nano Hollow Spheres for Industrial TNT Wastewater Treatment

et al. 2022

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The aim of the present work was to synthesize magnetite (Fe3O4) nano hollow spheres (NHS) via simple, one-pot, template-free, hydrothermal method. The structural, morphological, and surface analysis of Fe3O4 NHS were studied by scanning electron microscopy (SEM), x-ray diffraction technique (XRD), Fourier transform infrared spectroscopy FTIR and burner-Emmett-teller (BET). The as obtained magnetic (Fe3O4) NHS were used as an adsorbent for treating industrial trinitrotoluene (TNT) wastewater to reduce its Chemical Oxygen Demand (COD) values. Adsorption capacity (Qe) of the NHS obtained is 70 mg/g, confirming the attractive forces present between adsorbent (Fe3O4 NHS) and adsorbate (TNT wastewater). COD value of TNT wastewater was reduced to >92% in 2 h at room temperature. The adsorption capacity of Fe3O4 NHS was observed as a function of time, initial concentration, pH, and temperature. The applied Fe3O4 NHS was recovered for reuse by simply manipulating its magnetic properties with slight shift in pH of the solution. A modest decrease in Qe (5.0–15.1%) was observed after each cycle. The novel Fe3O4 NHS could be an excellent candidate for treating wastewater generated by the intermediate processes during cyclonite, cyclotetramethylene-tetranitramine (HMX), nitroglycerin (NG) production and other various environmental pollutants/species.

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Magnetite nano-spherical quantum dots decorated graphene oxide nano sheet (GO@Fe3O4): Electrochemical properties and applications for removal heavy metals, pesticide and solar cell

Cited by 80 publications

References 44 publications

NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy

NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy

Bismuth/bismuth oxide-incorporated reduced graphene oxide nanocomposite: synthesis, characterisation, and photocatalytic activity

Synthesis of Magnetic Fe3O4 Nano Hollow Spheres for Industrial TNT Wastewater Treatment

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Magnetite nano-spherical quantum dots decorated graphene oxide nano sheet (GO@Fe3O4): Electrochemical properties and applications for removal heavy metals, pesticide and solar cell

Cited by 80 publications

References 44 publications

NIR‐responsive Fe3O4@PPy nanocomposite for efficient potential use in photothermal therapy

NIR‐responsive Fe3O4@PPy nanocomposite for efficient potential use in photothermal therapy

Bismuth/bismuth oxide-incorporated reduced graphene oxide nanocomposite: synthesis, characterisation, and photocatalytic activity

Synthesis of Magnetic Fe3O4 Nano Hollow Spheres for Industrial TNT Wastewater Treatment

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Product

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NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy

NIR‐responsive Fe₃O₄@PPy nanocomposite for efficient potential use in photothermal therapy