Adsorption of organic layers over electrodeposited magnetite (Fe3O4) thin films

Cortés, M.; Gomez, Enrique D.; Sadler, James E.; Vallés, E.

doi:10.1016/j.electacta.2011.01.117

Cited by 8 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…030025-2 The obtained crystal size is much larger than those of previous studies reported by Cortes (2011) and Kashyap (2010) who obtained Fe 3 O 4 crystal with a size of 80 nm and 100 nm. Larger particle size obtained in this work is likely due to the differences in the applied voltage to the electrodes, a higher electrolyte concentration and the type of surfactant.…”

Section: Methodscontrasting

confidence: 46%

“…In a previous work, thin film of magnetite was deposited on ITOcoated glass substrate at a temperature of 65 ºC for 120 seconds in alkaline condition (pH = 12.48) from a solution of Fe 2 (SO 4 ) 3 mixed with triethanolamine (TEA) [5]. In other work, a thin layer of magnetite was grown of goldcoated glass substrate [6]. Electrodeposition was carried out in a conventional three electrode cells using cyclic voltammetry method.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrodeposition of Fe3O4 layer from solution of Fe2(SO4)3 with addition ethylene glycol

Dahlan¹,

Asrar²

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. The electrodeposition of Fe 3 O 4 layer from the solution Fe 2 (SO 4 ) 3 with the addition of ethylene glycol on Indium Tin Oxide (ITO) substrate has been performed. The electrodeposition was carried out using a voltage of 5 volts for 120 seconds, with and without the addition of 2% wt ethylene glycol. Significant effects of temperature on the resulting the samples is observed when they are heated at 400 °C. Structural characterization using X-ray diffraction (XRD) shows that all samples produce a layer of Fe 3 O 4 with particle size less than 50 nanometers. The addition of ethylene glycol and the heating of the sample causes a shrinkage in particle size. The scanning electron microscopy (SEM) characterization shows that Fe 3 O 4 layer resulting from the process of electrodeposition of Fe 2 (SO 4 ) 3 without ethylene glycol, independent of whether the sample is heated or not, is uneven and buildup. Layer produced by the addition of ethylene glycol without heating produces spherical particles. On contrary, when the layer is heated the spherical particles transform to irregularly-shaped particles with smaller size.

show abstract

Section: Methodscontrasting

confidence: 46%

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Fe3O4 layer from solution of Fe2(SO4)3 with addition ethylene glycol

Dahlan¹,

Asrar²

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Finally, it is worth mentioning that the hydrophobic/superhydrophobic properties of the coatings are achieved without any post-surface functionalization of the electrodeposited layers, in contrast with other works dealing with porous Fe-based alloy [34] or Cu films [35]. Even functionalized electrodeposited magnetite (Fe3O4) films exhibit much lower CA values [36].…”

Section: Water Wettability Assessmentmentioning

confidence: 98%

Fabrication of sustainable hydrophobic and oleophilic pseudo-ordered macroporous Fe–Cu films with tunable composition and pore size via electrodeposition through colloidal templates

Dislaki

Pokki

Sort

et al. 2018

Applied Materials Today

View full text Add to dashboard Cite

In this work, sustainable hydrophobic and oleophilic macroporous Fe-Cu films are fabricated using a straightforward, inexpensive and environmentally friendly twostep procedure which combines electrodeposition with the colloidal lithography technique. Elemental, morphological and structuralcharacterization of the resulting pseudo-ordered meshes is carried out and wettability is assessed using contact angle measurements with respect to two distinct film compositions (3 at.% Fe vs 75-85 at.% Fe) and three different pore diameters (namely, 200 nm, 350 nm and 500 nm). Water contact angles are measured to be in the range of approximately 109.0-155.1•(without any post-surface functionalization) and alow contact angle hysteresis is observed in the superhydrophobic samples. The increase in the hydrophobic character of the films correlates well with an increase in surface roughness, whereas differences incomposition play a minor role. For the superhydrophobic Fe-rich macroporous film, water-oil separation capability and recyclability are also demonstrated while the pore size is favorable for effective water-oil mixture and emulsion separation. The results shown here demonstrate that sustainable and affordable materials processed in a simple and cheap manner can be an asset for the removal of water-immiscibleorganic compounds from aqueous environments.

show abstract

“…Despite of the aforementioned, alkanethiol SAM formation on non-metallic surfaces has been scarcely studied, the most known examples being over SnO 2 (110) 35 , manganite (La 2/3 Sr 1/3 MnO 3 ) 36 , magnetite (Fe 3 O 4 ) 37 or fluorine-doped tin oxide 38 . One of the most promising substrates for such purpose is indium-tin oxide (ITO).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical growth of CoNi and Pt–CoNi soft magnetic composites on an alkanethiol monolayer-modified ITO substrate

Escalera‐López

Gómez

Vallés

2015

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

CoNi and Pt-CoNi magnetic layers on indium-tin oxide (ITO) substrates modified by an alkanethiol self-assembled monolayer (SAM) have been electrochemically obtained as an initial stage to prepare semiconducting layer-SAM-magnetic layer hybrid structures. The best conditions to obtain the maximum compactness of adsorbed layers of dodecanethiol (C12-SH) on ITO substrate have been studied using contact angle, AFM, XPS and electrochemical tests. The electrochemical characterization (electrochemical probe or voltammetric response in blank solutions) is fundamental to ensure the maximum blocking of the substrate. Although the electrodeposition process on the SAM-modified ITO substrate is very slow if the blocking of the surface is significant, non-cracked metallic layers of CoNi, with or without a previously electrodeposited seed-layer of platinum, have been obtained by optimizing the deposition potentials. Initial nucleation is expected to take place at the pinhole defects of the C12-SH SAM, followed by a mushroom-like growth regime through the SAM interface that allows the formation of a continuous metallic layer electrically connected to the ITO surface. Due to the potential of the methodology, the preparation of patterned metallic deposits on ITO substrate using SAMs with different coverage as templates is feasible.

show abstract

Adsorption of organic layers over electrodeposited magnetite (Fe3O4) thin films

Cited by 8 publications

References 14 publications

Electrodeposition of Fe3O4 layer from solution of Fe2(SO4)3 with addition ethylene glycol

Electrodeposition of Fe3O4 layer from solution of Fe2(SO4)3 with addition ethylene glycol

Fabrication of sustainable hydrophobic and oleophilic pseudo-ordered macroporous Fe–Cu films with tunable composition and pore size via electrodeposition through colloidal templates

Electrochemical growth of CoNi and Pt–CoNi soft magnetic composites on an alkanethiol monolayer-modified ITO substrate

Contact Info

Product

Resources

About