ESCA and Mössbauer spectra of some iron(III) betadiketonates and tetraphenylporphyrin iron(III) chloride

Blomquist, J.; Helgeson, U.; Moberg, L.C.; Folkesson, Börje; Larsson, Ragnar

doi:10.1016/s0020-1693(00)83546-x

Cited by 19 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The position and the shape of Fe band are similar to those detected on microcrystalline samples of 1 and 2 (Figure b) and are in good agreement with the presence of Fe +3 species …”

Section: Resultssupporting

confidence: 85%

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

et al. 2008

View full text Add to dashboard Cite

The site-specific reaction of tetrairon(III) propeller-like clusters with tripodal ligands derived from 2-hydroxymethyl-propane-1,3-diol was investigated as a route to graft these single molecule magnets (SMMs) on Si(100). A silicon surface prefunctionalized with a long-chain trimethylol derivative was reacted with [Fe4(OMe)6(tmhd)6] (1) and [Fe4(L)2(tmhd)6] (2), and the reaction course was followed by X-ray photoelectron spectroscopy (XPS), attenuated total reflection−infrared spectroscopy, and atomic force microscopy (Htmhd = 2,2,6,6-tetramethylheptane-3,5-dione, H3L = 2-(4-chloro-phenyl)-2-hydroxymethyl-propane-1,3-diol). Chlorine-marked complex 2 was specifically designed to monitor the ligand-exchange reaction by XPS. This technique showed that the amount of Fe at the surface closely parallels the surface concentration of tripodal receptors. For low receptor concentrations the Cl/Fe atomic ratio is halved as compared with solid 2, as expected for intact molecules linked to the surface via one receptor only. For high receptor concentrations, the Cl/Fe ratio drops to zero, as expected for a complete replacement of L3− ligands by surface-bound receptors.

show abstract

“…The position and the shape of Fe band are similar to those detected on microcrystalline samples of 1 and 2 (Figure b) and are in good agreement with the presence of Fe +3 species …”

Section: Resultssupporting

confidence: 85%

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

et al. 2008

View full text Add to dashboard Cite

show abstract

“…In Fig. 5f, the binding energy was 710.7 eV, which characterizes the oxidized state of Fe 3+ , as reported by Blomquist et al 40. This confirmed the absence of Fe(II) ions in the structure of γ‐Fe 2 O 3 .…”

Section: Resultssupporting

confidence: 86%

Ag₃PO₄‐Supported Magnetic Hydroxyapatite Composite as Green Photocatalyst for the Removal of Cationic and Anionic Dyes from Aqueous Solution

Pham

Nguyen

et al. 2021

Chem Eng & Technol

View full text Add to dashboard Cite

Eggshells were used as the main source for the synthesis of hydroxyapatite (HAp), and the semiconductor material Ag3PO4 was synthesized by the crystal formation process on magnetic HAp. X‐ray diffraction, scanning electron microscopy, the Brunauer‐Emmett‐Teller surface area, and X‐ray photoelectron, Fourier transform infrared, and ultraviolet‐visible light diffuse reflectance spectroscopy were employed to study the phase structure, surface morphology, and optical properties of the composite photocatalyst. The photocatalytic activities of the synthesized composites were explored for the photodegradation of both cationic (Methylene Blue) and anionic (Reactive Red 195) dyes, achieving efficiencies of around 99 % and 96 %, respectively. Vibrating sample magnetometry showed the excellent regenerability of the magnetic composite after five cycles, demonstrating its potential for removing cationic and anionic dyes from aqueous solutions.

show abstract

“…The intense peak at 530.1 eV is ascribed to the Fe−O bond of iron oxide and the peak at 532.4 eV corresponds to the unreduced C=O of N‐rGO. The peak at 531.2 eV is ascribed to the bonding of Fe with carbon through oxygen (Fe‐O−C),, implying chemical coupling of Fe 2 O 3 ‐Fe 3 O 4 with N‐rGO.…”

Section: Resultsmentioning

confidence: 96%

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

2018

View full text Add to dashboard Cite

The synthesis of a novel chemically coupled hybrid material based on Fe2O3‐Fe3O4 heterostructure and nitrogen‐doped reduced graphene oxide (N‐rGO) for the development of high performance supercapacitor devices is demonstrated. The chemically coupled hybrid material is synthesized in a one‐pot method under hydrothermal condition, resulting in the formation of crystalline α‐Fe2O3 and poorly crystalline/amorphous Fe3O4. The Fe2O3‐Fe3O4 particles have an average size of 30–50 nm. Chemical integration of Fe2O3‐Fe3O4 with N‐rGO through Fe‐O−C bonds is achieved. The chemical coupling of N‐rGO with pseudocapacitive Fe2O3‐Fe3O4 enhances the overall performance of the composite. Two asymmetric supercapacitor devices using the hybrid material either as positive or negative electrode are fabricated. The supercapacitive behaviour is evaluated in terms of specific capacitance, energy density, power density and cycling stability, showing excellent performance. The asymmetric device based on hybrid material as the positive and activated carbon as the negative electrode, delivers a specific capacitance of 111.95 F g−1 at 0.8 A g−1 with an energy density of 44.93 Wh kg−1. The supercapacitor has excellent cycling stability with a capacitance retention of >92 % even after 10000 extensive charge‐discharge cycles. The all‐solid‐state asymmetric supercapacitor device is fabricated using gel electrolyte. Solid‐state devices connected in series successfully light up 29 LEDs.

show abstract

ESCA and Mössbauer spectra of some iron(III) betadiketonates and tetraphenylporphyrin iron(III) chloride

Cited by 19 publications

References 8 publications

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

Ag₃PO₄‐Supported Magnetic Hydroxyapatite Composite as Green Photocatalyst for the Removal of Cationic and Anionic Dyes from Aqueous Solution

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Contact Info

Product

Resources

About

ESCA and Mössbauer spectra of some iron(III) betadiketonates and tetraphenylporphyrin iron(III) chloride

Cited by 19 publications

References 8 publications

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

Site-Specific Anchoring of Tetrairon(III) Single Molecule Magnets on Functionalized Si(100) Surfaces

Ag3PO4‐Supported Magnetic Hydroxyapatite Composite as Green Photocatalyst for the Removal of Cationic and Anionic Dyes from Aqueous Solution

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe2O3‐Fe3O4 Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Contact Info

Product

Resources

About

Ag₃PO₄‐Supported Magnetic Hydroxyapatite Composite as Green Photocatalyst for the Removal of Cationic and Anionic Dyes from Aqueous Solution

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide