Surface anchoring of bi-functional organic linkers on piezoelectric BiFeO 3 films and particles: Comparison between carboxylic and phosphonic tethering groups

Tudisco, Cristina; Pellegrino, Anna Lucia; Malandrino, Graziella; Condorelli, Guglielmo G.

doi:10.1016/j.surfcoat.2017.11.014

Cited by 12 publications

(14 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the position of this peak is intermediate between the value (289.3 eV) reported for the COOH groups of terephthalic acid 45 and the typical values (288.6–288.2 eV) reported for the carboxylate (COO – ) groups. 45,47 This feature can be, therefore, the result of the contribution of two components at 289.3 and at 288.6 eV due to adsorbed terephthalic acid and the terephthalate ligands of the MOF, respectively. This result is consistent with the FTIR outcomes, which suggests the presence of free terephthalic acid besides the terephthalate ligand of the NH 2 -Mil-101 framework.…”

Section: Resultscontrasting

confidence: 64%

“…In particular, the signals at 1590–1510 and at 1300–1400 cm –1 are typical of the COO – asymmetric and symmetric stretchings of the terphthalate ligands. 41,45,46 However, the presence of unreacted terephthalic acid molecules is also detected through the signal at 1690 cm –1 . 45,47 The doublet at 3220 and 3140 cm –1 is assigned to the N–H asymmetric and symmetric stretches of the amino group.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes

et al. 2019

Self Cite

View full text Add to dashboard Cite

A novel metal organic framework (MOF)-based composite was synthesized on a Cu substrate via a two-step route. An amorphous iron oxide/hydroxide layer was first deposited on a Cu foil through a sol–gel process; then, Fe-NH2-Mil-101 was grown using both the iron oxide/hydroxide matrix, which provided the Fe3+ centers needed for MOF formation, and 2-aminoterephthalic acid ethanol solution. This innovative synthetic strategy is a convenient approach to grow metal oxide/hydroxide and MOF composite films. Structural, chemical, and morphological characterizations suggest that the obtained composite is made up of both the α-FeOOH goethite and the NH2-Mil-101 phases featuring a hybrid heterostructure. The electrochemical features of the composite structure were investigated using electrochemical impedance spectroscopy. The impedance behavior of the α-FeOOH/NH2-Mil-101 films indicates that they can be used as efficient high surface area metal hydroxide/MOF-based electrodes for applications such as energy storage and sensing.

show abstract

Section: Resultscontrasting

confidence: 64%

Section: Resultsmentioning

confidence: 99%

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…of 286. and to C−N-containing species (aminoterephthalate and DMF). 61 A third component at 288.8 and 288.5 eV for NH 2 -Mil-101 and Mil-101, respectively, is typical of carboxylate groups (COO − ), 57,61 and it is a clear indication of the presence of the terephthalate species. However, a component of the DMF carboxylic group around 288.0 eV, 61,64 which contributes to this band, must also be taken into account.…”

Section: ■ Introductionmentioning

confidence: 99%

Direct Growth on Si(100) of Isolated Octahedral Mil-101(Fe) Crystals for the Separation of Aromatic Vapors

et al. 2019

Self Cite

View full text Add to dashboard Cite

Octahedral crystals of Fe(III)-based Mil-101 and amino-functionalized Mil-101 are directly grown on Si(100) using easy solution routes under mild conditions. Images from microscopy analyses show that samples consist of a layer of isolated octahedral crystals in which the [111]direction develops vertically with respect to the Si(100) substrate. Structural and chemical characterizations indicate that crystals consist of Mil-101(Fe) with the following stoichiometry: Fe 3 (O)Cl-(DMF) 2 (Terepht) 3 (DMF = dimethylformamide and Terepht = terephthalate or aminoterephthalate). Both Si-grown Mil-101(Fe) and NH 2 -Mil-101(Fe) layers are capable of adsorbing two aromatic gases with different polarities, toluene and nitrobenzene. Their characteristic thermal desorption profiles depend on the aminofunctionalization of the terephthalate ligand as well as on the mutual interactions between the two guests when adsorbed from a mixture. It is also shown that, by adapting suitable experimental conditions, Mil-101(Fe) layers are capable of separating a toluene/nitrobenzene gas mixture through selective thermal desorption. A model based on the evaluation of the involved host−guest interactions through the density functional theory (DFT) approach is proposed to explain the observed selective desorption and to account for the key parameters involved in the desorption process of aromatic vapors.

show abstract

“…The piezoelectric property of the deposited film on the IrO2/Si substrate has been investigated through piezoresponse force spectroscopy (PFS). Piezoresponse (in terms of the amplitude of the out of plane displacement, Mag), as a function of the alternating voltage, showed the typical butterfly loop [30,31] for an applied bias from −9 V to 9 V between microscope cantilever tip and BFO bottom electrode IrO2 (Figure 5b), indicating the piezoelectric behavior of the film. In Figure 5b the unit for the Mag is nA, because the instrument measures the vertical displacement from the photocurrent of the laser beam reflected by the displaced tip.…”

Section: Functional Propertiesmentioning

confidence: 99%

Piezoelectric BiFeO3 Thin Films: Optimization of MOCVD Process on Si

2020

Self Cite

View full text Add to dashboard Cite

This paper presents a simple and optimized metal organic chemical vapor deposition (MOCVD) protocol for the deposition of perovskite BiFeO3 films on silicon-based substrates, in order to move toward the next generation of lead-free hybrid energy harvesters. A bi-metal mixture that is composed of Bi(phenyl)3, and Fe(tmhd)3 has been used as a precursor source. BiFeO3 films have been grown by MOCVD on IrO2/Si substrates, in which the conductive IrO2 functions as a bottom electrode and a buffer layer. BiFeO3 films have been analyzed by X-ray diffraction (XRD) for structural characterization and by field-emission scanning electron microscopy (FE-SEM) coupled with energy dispersive X-ray (EDX) analysis for the morphological and chemical characterizations, respectively. These studies have shown that the deposited films are polycrystalline, pure BiFeO3 phase highly homogenous in morphology and composition all over the entire substrate surface. Piezoelectric force microscopy (PFM) and Piezoelectric Force Spectroscopy (PFS) checked the piezoelectric and ferroelectric properties of the film.

show abstract

Surface anchoring of bi-functional organic linkers on piezoelectric BiFeO 3 films and particles: Comparison between carboxylic and phosphonic tethering groups

Cited by 12 publications

References 43 publications

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes

Direct Growth on Si(100) of Isolated Octahedral Mil-101(Fe) Crystals for the Separation of Aromatic Vapors

Piezoelectric BiFeO3 Thin Films: Optimization of MOCVD Process on Si

Contact Info

Product

Resources

About

Surface anchoring of bi-functional organic linkers on piezoelectric BiFeO 3 films and particles: Comparison between carboxylic and phosphonic tethering groups

Cited by 12 publications

References 43 publications

New Synthetic Route for the Growth of α-FeOOH/NH2-Mil-101 Films on Copper Foil for High Surface Area Electrodes

New Synthetic Route for the Growth of α-FeOOH/NH2-Mil-101 Films on Copper Foil for High Surface Area Electrodes

Direct Growth on Si(100) of Isolated Octahedral Mil-101(Fe) Crystals for the Separation of Aromatic Vapors

Piezoelectric BiFeO3 Thin Films: Optimization of MOCVD Process on Si

Contact Info

Product

Resources

About

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes

New Synthetic Route for the Growth of α-FeOOH/NH₂-Mil-101 Films on Copper Foil for High Surface Area Electrodes