Cost-effective and facile development of Fe<sub>3</sub>O<sub>4</sub>–reduced graphene oxide electrodes for supercapacitors

Ullah, Waseem; Anwar, Abdul Waheed; Majeed, Abdul; Sharif, A.; Sharif, Rehana; Khalid, Perveiz; Mustafa, Ghulam; Khan, Afsar

doi:10.1179/17535557a15y.000000016

Cited by 13 publications

(2 citation statements)

References 37 publications

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Section: Resultssupporting

confidence: 91%

“…The UV-visible analysis of the synthesized Fe3O4@ Glu/BTSC nanoparticles is shown in Figure 5. The optical absorption spectrum of iron oxide nanoparticles was observed at 320 nm and this peak indicates the formation of iron oxide nanoparticles and is consistent with the results of Ullah et al 31 The results of zeta potential analysis in deionized water for Fe 3 O 4 nanoparticles with BTSC coating were equal to -3.5 mV (Figure 6). In fact, the thiosemicarbazone coating stabilizes iron oxide nanoparticles.…”

Section: Analysis Of Synthesized Complexsupporting

confidence: 90%

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Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

et al. 2022

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Background: Cancer cells have a higher demand for iron to grow and proliferate. A new complex of iron nanoparticles and thiosemicarbazones was synthesized. Confirmation tests included UV-visible, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), Fourier transform infrared (FTIR), X-ray diffraction (XRD) and zeta potential. Methods: MTT assay, flow cytometry and qRT-PCR were used to investigate anti-proliferative effect, amount of apoptosis and the effect of Fe3 O4 @Glu/BTSC on changes in gene expression of microRNA let-7c (let-7c), respectively. The specifications of Fe3 O4 @ Glu/BTSC were confirmed at 5 nm. Results: Fe3O4@Glu/BTSC was more effective than BTSC and Fe3 O4 on A549 cells (IC50=166.77 µg/mL) but its effect on healthy cells was smaller (CC50=189.15 µg/mL). The drug selectivity index (SI) was calculated to be 1.13. The initial apoptosis rate was 46.33% for Fe3 O4 @Glu/BTSC, 28.27% for BTSC and 26.02% for Fe3 O4 . BTSC and BTSC@Fe3 O4 inhibited the cell cycle progression in the Sub-G1 and S phases. let-7c expression was 6.9 times higher in treated cells compared to the control group. The expression rate was 2.2 with BTSC compared to the control group and 1.6 times for Fe3 O4. Conclusion: Fe3 O4 @Glu/BTSC has proper anti-proliferative effects against lung cancer cells by increasing the expression of let-7c and inhibiting the cell cycle with the apoptosis activation pathway.

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Section: Resultssupporting

confidence: 91%

Section: Analysis Of Synthesized Complexsupporting

confidence: 90%

Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

et al. 2022

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Graphene‐Based Materials for Supercapacitors

Zhu¹,

He²,

Zhao³

2022

Templated Fabrication of Graphene‐Based Materials for Energy Applications

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Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

et al. 2019

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Summary The outstanding multifunctional electrochemical properties of chalcogenide‐based FeO@CuCo2S4, such as electrochemical energy storage (EES) and electrocatalytic oxygen evolution reaction are demonstrated. The FeO@CuCo2S4 film is fabricated using a two‐step synthesis procedure. First, CuCo2S4 was grown on 3D porous nickel foam substrate using a mild hydrothermal growth technique, onto which FeO was then deposited via a magnetron sputtering. The FeO@CuCo2S4 film shows a cordillera‐like morphology with a uniformly distributed island‐like nanospheres on its surface. The optimized FeO@CuCo2S4 electrode delivers an ultrahigh specific capacitance of 3213 F g−1 at 1 A g−1. This FeO@CuCo2S4 electrode shows superior capacity retention and coulombic efficiency of ~116% and ~99%, respectively, after 10 000 charge/discharge stability cycles. Moreover, this superior electrode is also serves as an OER electrocatalyst in alkaline solution (1 M aqueous KOH), demonstrating better catalytic activity by attaining a low overpotential of ~240 mV at 10 mA cm−2 and a small Tafel slope of 51 mV dec−1. This FeO@CuCo2S4 catalyst has excellent current rate performance and endurance properties at a high current density rate of up to 100 mA cm−2 even after 25 hours. The post‐measurement HR‐TEM, EDS‐STEM mapping, and Raman analysis reveal the phase transformation of FeO@CuCo2S4 upon electro‐oxidation.

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Cost-effective and facile development of Fe₃O₄–reduced graphene oxide electrodes for supercapacitors

Cited by 13 publications

References 37 publications

Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

Graphene‐Based Materials for Supercapacitors

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

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Cost-effective and facile development of Fe3O4–reduced graphene oxide electrodes for supercapacitors

Cited by 13 publications

References 37 publications

Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

Iron Oxide Nanoparticles Conjugated to Thiosemicarbazone Reduce the Survival of Cancer Cells by Increasing the Gene Expression of MicroRNA let-7c in Lung Cancer A549 Cells

Graphene‐Based Materials for Supercapacitors

Fabrication of FeO@CuCo 2 S 4 multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

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Product

Resources

About

Cost-effective and facile development of Fe₃O₄–reduced graphene oxide electrodes for supercapacitors

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction