Electrochemical and optical properties of magnetic CuFe2O4 nanofibers grown by PVP and PVA-assisted sol–gel electrospinning

safartoobi, Amirreza; Mazloom, J.; Ghodsi, F. E.

doi:10.1007/s00339-021-05162-9

Cited by 15 publications

(9 citation statements)

References 59 publications

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“…The average diameter promotes to 303 nm when the calcined temperature reaches to 600 °C. This phenomenon could be ascribed to the particle growth of the metal oxides 35 . As shown in Fig.…”

Section: Resultsmentioning

confidence: 97%

“…Three distinct stages were observed in weight loss. The first stage with a weight loss of about 12.53% at the range of room temperature to 200 °C could be ascribed to the evaporation of the solvents, including ethanol and DMF in the as-spun nanofibers 35 . The second weight loss in the temperature range of 200–350 °C corresponds to the decomposition of the metal precursors, which is verified by an endothermic peak centered at 240 °C in the DTG curve 36 , 37 .…”

Section: Resultsmentioning

confidence: 99%

“…The second weight loss in the temperature range of 200–350 °C corresponds to the decomposition of the metal precursors, which is verified by an endothermic peak centered at 240 °C in the DTG curve 36 , 37 . The third stage is the strong weight loss of 28.42% occurred at around 400 °C, which could be ascribed to the formation of metal oxide phases and the decomposition of the polymer side chain 35 . Above 550 °C in the TGA curve, no change was observed in the mass of the nanofibers, indicating complete combustion of PVP and the formation of crystalline Fe 2 O 3 @SnO 2 composite.…”

Section: Resultsmentioning

confidence: 99%

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Hierarchical Fe2O3 hexagonal nanoplatelets anchored on SnO2 nanofibers for high-performance asymmetric supercapacitor device

Safari

Mazloom

Boustani

et al. 2022

Sci Rep

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Metal oxide heterostructures have gained huge attention in the energy storage applications due to their outstanding properties compared to pristine metal oxides. Herein, magnetic Fe2O3@SnO2 heterostructures were synthesized by the sol–gel electrospinning method at calcination temperatures of 450 and 600 °C. XRD line profile analysis indicated that fraction of tetragonal tin oxide phase compared to rhombohedral hematite was enhanced by increasing calcination temperature. FESEM images revealed that hexagonal nanoplatelets of Fe2O3 were hierarchically anchored on SnO2 hollow nanofibers. Optical band gap of heterogeneous structures was increased from 2.06 to 2.40 eV by calcination process. Vibrating sample magnetometer analysis demonstrated that increasing calcination temperature of the samples reduces saturation magnetization from 2.32 to 0.92 emu g-1. The Fe2O3@SnO2-450 and Fe2O3@SnO2-600 nanofibers as active materials coated onto Ni foams (NF) and their electrochemical performance were evaluated in three and two-electrode configurations in 3 M KOH electrolyte solution. Fe2O3@SnO2-600/NF electrode exhibits a high specific capacitance of 562.3 F g-1 at a current density of 1 A g-1 and good cycling stability with 92.8% capacitance retention at a high current density of 10 A g-1 after 3000 cycles in three-electrode system. The assembled Fe2O3@SnO2-600//activated carbon asymmetric supercapacitor device delivers a maximum energy density of 50.2 Wh kg-1 at a power density of 650 W kg-1. The results display that the Fe2O3@SnO2-600 can be a promising electrode material in supercapacitor applications.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Hierarchical Fe2O3 hexagonal nanoplatelets anchored on SnO2 nanofibers for high-performance asymmetric supercapacitor device

Safari

Mazloom

Boustani

et al. 2022

Sci Rep

Self Cite

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“…The chance of synthesizing the nano ferrites in the form of solid solutions can unclose the proper way to adapt and alter their properties for vast applications 30 , 31 . Nano-crystalline magnetic ferrite of (CuFe 2 O 4 ) has been fabricated by different methods, such as solid-state reaction 32 , co-precipitation 33 , hydrothermal 34 , solution auto combustion 35 , and sol–gel 36 . The intriguing outcomes revealed that the prepared samples’ surface area, magnetic parameter, particle size, crystallites, and catalytic properties were changed based on preparation techniques 37 .…”

Section: Introductionmentioning

confidence: 99%

The catalytic performance of CuFe2O4@CQD nanocomposite as a high-perform heterogeneous nanocatalyst in nitroaniline group reduction

Naghash‐Hamed¹,

Arsalani

Mousavi

2023

Sci Rep

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In this study, we fabricated an economical, non-toxic, and convenient magnetic nanocomposite of CuFe2O4 nanoparticles (NPs)/carbon quantum dots (CQDs) of citric acid via the co-precipitation method. Afterward, obtained magnetic nanocomposite was used as a nanocatalyst to reduce the ortho-nitroaniline (o-NA) and para-nitroaniline (p-NA) using a reducer agent of sodium borohydride (NaBH4). To investigate the functional groups, crystallite, structure, morphology, and nanoparticle size of the prepared nanocomposite, FT-IR, XRD, TEM, BET, and SEM were employed. The catalytic performance of the nanocatalyst was experimentally evaluated based on the ultraviolet–visible absorbance to assess the reduction of o-NA and p-NA. The acquired outcomes illustrated that the prepared heterogeneous catalyst significantly enhanced the reduction of o-NA and p-NA substrates. The analysis of the absorption showed a remarkable decrease for ortho-NA and para-NA at λmax = 415 nm in 27 s and λmax = 380 nm in 8 s, respectively. The constant rate (kapp) of ortho-NA and para-NA at the stated λmax was 8.39 × 10–2 s−1 and 5.48 × 10–1 s−1. The most highlighted result of this work was that the CuFe2O4@CQD nanocomposite fabricated from citric acid performed better than absolute CuFe2O4 NPs, since nanocomposite containing CQDs had a more significant impact than copper ferrite NPs.

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“…The chance of synthesizing the nano ferrites in the form of solid solutions can unclose the proper way to adapt and alter their properties for vast applications [25,26]. Nano-crystalline magnetic ferrite of (CuFe 2 O 4 ) has been fabricated by different methods like solid-state reaction [27], co-precipitation [28], hydrothermal [29], solution auto combustion [30], and sol-gel [31]. The intriguing outcomes revealed that the prepared samples' surface area, magnetic parameter, particle size, crystallites, and catalytic properties were changed due to their various preparation techniques [32].…”

Section: Introductionmentioning

confidence: 99%

The catalytic performance of CuFe2O4@CQD nanocomposite in nitroaniline group reduction: High-perform heterogeneous nanocatalyst

Naghash‐Hamed

Arsalani

Mousavi

2022

Preprint

View full text Add to dashboard Cite

In this study, we fabricated an economical, non-toxic, and convenient magnetic nanocomposite of CuFe2O4 nanoparticles (NPs)/carbon quantum dots (CQDs) of citric acid via the co-precipitation method. Afterward, obtained magnetic nanocomposite was used as a nanocatalyst to reduce the ortho-nitroaniline (o-NA) and para-nitroaniline (p-NA) using a reducer agent of sodium borohydride (NaBH4). To investigate the functional groups, crystallite, structure, morphology, and nanoparticle size of the prepared nanocomposite, FT-IR, XRD, TEM, BET, and SEM were employed. The catalytic performance of the nanocatalyst was experimentally evaluated based on the ultraviolet-visible absorbance to assess the reduction of o-NA and p-NA with a reducing agent of NaBH4. The acquired outcomes illustrated that the prepared heterogeneous catalyst significantly enhanced the reduction of o-NA and p-NA substrates. By analyzing the absorption, the remarkable decrease at λmax = 415 nm for ortho-NA in 27 s with a constant rate (kapp) of 8.39 × 10− 2 s− 1 and a notable decline at λmax = 380 nm for para-NA in 8 s with a constant rate of 5.48 × 10− 1 s− 1 were obtained. The most highlighted result of this work was that the CuFe2O4@CQD nanocomposite fabricated from citric acid performed better than absolute CuFe2O4 NPs, since nanocomposite containing CQDs had a more significant impact than copper ferrite NPs.

show abstract

Electrochemical and optical properties of magnetic CuFe2O4 nanofibers grown by PVP and PVA-assisted sol–gel electrospinning

Cited by 15 publications

References 59 publications

Hierarchical Fe2O3 hexagonal nanoplatelets anchored on SnO2 nanofibers for high-performance asymmetric supercapacitor device

Hierarchical Fe2O3 hexagonal nanoplatelets anchored on SnO2 nanofibers for high-performance asymmetric supercapacitor device

The catalytic performance of CuFe2O4@CQD nanocomposite as a high-perform heterogeneous nanocatalyst in nitroaniline group reduction

The catalytic performance of CuFe2O4@CQD nanocomposite in nitroaniline group reduction: High-perform heterogeneous nanocatalyst

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