Dielectric and electrical studies on iron oxide (α-Fe2O3) nanoparticles synthesized by modified solution combustion reaction for microwave applications

Qayoom, Mubashir; Shah, Khurshed A.; Pandit, Ashok K.; Firdous, Arfat; Dar, G. N.

doi:10.1007/s10832-020-00219-2

Cited by 54 publications

(16 citation statements)

References 23 publications

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“…NiO+5% Fe QDs with 5 nm particle size, with XRD that doped NiO+5% Fe QDs by CsMAFAPbI2Br2 and SEM homogeneously distribution, as shown in figure 4(a). The diffraction peaks were observed at 37.2°, 43.1°, 62.90°, 74.9°, and 79.2° for the NiO+5% Fe QDs that were well-defined for (111), ( 200), ( 220), (311), and (222) cubic NiO3+FeO3 crystals [14,15].The CsMAFAPbI2Br2 /NiO+5% Fe film confirmed the formation of α-Fe2O3 phase via the observed peaks ( 024) and (116) at 50.4° and 52.2°, respectively, which is consistent with previous studies [16,17]. The diffraction peaks of CsMAFAPbI2Br2 were observed at 12.5°, 19.8°, 28.2°, 31.6°, 34.7°, 40.3°, 49.8°, 60.3°, and 73.2° for (011), ( 002), ( 211), ( 100), ( 111), ( 224), ( 024), ( 166), (220), and (311), respectively, confirming the diffraction pattern of the cubic perovskite.…”

Section: Thin Films and Photodetector Fabricationsupporting

confidence: 91%

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

Alwadei¹,

Alshatwi²,

Alwadai³

et al. 2022

Adv. sci. technol. eng. syst. j.

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Optoelectronic devices applications based on Organic-inorganic perovskites are promising and effective low-cost energy materials due to their exceptional physical properties which include high carrier mobility, high optical absorption coefficient, and long carrier diffusion length. In the presented work, a TiO2/NiO+5% Fe quantum dots (QDs)-doped CsMAFAPbI2Br2 perovskite heterojunction broadband photodetector was fabricated on FTO/glass substrate. The photodetector can detect a wide range of wavelengths, from UV to Vis (100-800 nm), has high responsivity (0.99 A/W), and has excellent detectivity (8.9 × 10 12 Jones). Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), atomic force microscopy (AFM), and electrical (I-V) characterization were used to measure the responsivity and detectivity of the photodetectors. Doping with NiO+5% Fe QDs protected the device from oxygen and moisture and improved the morphology of the perovskite by reducing pit defects. The results showed high performance and the potential of a NiO+5% Fe QDs-doped triple cation perovskite photodetector device.

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Section: Thin Films and Photodetector Fabricationsupporting

confidence: 91%

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

Alwadei¹,

Alshatwi²,

Alwadai³

et al. 2022

Adv. sci. technol. eng. syst. j.

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“…The α-Fe 2 O 3 nanoparticles possess ring like structures having octahedral shape and uniformly distributed as shown in Figure 6a,b. 32 The Ni(bpy) 3 Cl 2 complex units having a rod like morphology (Figure 6c,d It is noteworthy that the morphology of α-Fe 2 O 3 nanorings remained intact during the hydrothermal synthesis of hybrid FNB-2, which is consistent with the XRD results.…”

Section: Methodssupporting

confidence: 82%

“…The morphological features of the synthesized α-Fe 2 O 3 , Ni(bpy) 3 Cl 2 , and FNB-2 photocatalysts are probed by field emission scanning electron microscopy (FE-SEM) as shown in Figure . The α-Fe 2 O 3 nanoparticles possess ring like structures having octahedral shape and uniformly distributed as shown in Figure a,b . The Ni(bpy) 3 Cl 2 complex units having a rod like morphology (Figure c,d) are uniformly distributed and interconnected with each other.…”

Section: Resultsmentioning

confidence: 72%

Photocatalytic C–H Carboxylation of 1,3-Dicarbonyl Compounds with Carbon Dioxide Promoted by Nickel(II)-Sensitized α-Fe₂O₃ Nanoparticles

et al. 2022

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Insertion of carbon dioxide into C–H bonds under mild conditions is an industrially important yet highly challenging task. In the present study, we report the synthesis of an efficient photocatalyst consisting of a Ni(bpy)3Cl2 sensitizer supported on α-Fe2O3 nanoparticles for the CO2 insertion into C–H bonds, particularly carboxylation of 1,3-dicarbonyl compounds like acetyl acetone, methyl acetoacetate, and ethyl acetoacetate with CO2 under visible light irradiation using carbon tetrachloride as a solvent. The carboxylation of these compounds afforded the predominant formation of a single isomeric acid as confirmed by 13C NMR spectroscopy. Based on the computational studies, a possible reaction mechanism suggested the generation of CO2 radical anions at the conduction band of α-Fe2O3 through single electron transfer mediated by the nickel(II) complex that coupled with acetyl acetone cation radicals at the valence band of α-Fe2O3 to give the corresponding carboxylic acid. The protocol described in the present study presents a light-assisted approach and a low-cost material for the synthesis of carboxylic acids utilizing CO2 under mild reaction conditions.

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“…S1 †). 12 The X-ray photoelectron spectroscopy (XPS) signals for Fe at 711.2 eV and 724.9 eV corresponding to Fe 2p 3/2 and Fe 2p 1/2 , clearly confirmed the +3 oxidation state of Fe (Fig. S2a †).…”

mentioning

confidence: 74%

Heterogeneous iron catalyst for C(1)–H functionalization of 2-naphthols with primary aromatic alcohols

et al. 2023

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Dielectric and electrical studies on iron oxide (α-Fe2O3) nanoparticles synthesized by modified solution combustion reaction for microwave applications

Cited by 54 publications

References 23 publications

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

Photocatalytic C–H Carboxylation of 1,3-Dicarbonyl Compounds with Carbon Dioxide Promoted by Nickel(II)-Sensitized α-Fe₂O₃ Nanoparticles

Heterogeneous iron catalyst for C(1)–H functionalization of 2-naphthols with primary aromatic alcohols

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Dielectric and electrical studies on iron oxide (α-Fe2O3) nanoparticles synthesized by modified solution combustion reaction for microwave applications

Cited by 54 publications

References 23 publications

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

NiO Quantum dots Doped Triple Cation Perovskite CsMAFAPbI2Br2 Heterojunction Photodetector with High Responsivity

Photocatalytic C–H Carboxylation of 1,3-Dicarbonyl Compounds with Carbon Dioxide Promoted by Nickel(II)-Sensitized α-Fe2O3 Nanoparticles

Heterogeneous iron catalyst for C(1)–H functionalization of 2-naphthols with primary aromatic alcohols

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Photocatalytic C–H Carboxylation of 1,3-Dicarbonyl Compounds with Carbon Dioxide Promoted by Nickel(II)-Sensitized α-Fe₂O₃ Nanoparticles