Electrodeposition of sizeable and compositionally tunable rhodium-iron nanoparticles and their activity toward hydrogen evolution reaction

Golvano-Escobal, Irati; Suriñach, S.; Baró, María Dolors; Sort, Jordi; Pellicer, Eva

doi:10.1016/j.electacta.2016.02.112

Cited by 17 publications

(7 citation statements)

References 37 publications

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“…Remarkably, the traditional synthesis of transition metal phosphides often involves the release of the highly toxic phosphine, which is against of current precepts for green chemistry and sustainable management [45]. Moreover, the use of a polymer binder during electrode fabrication from catalyst powders is avoided here since the electrocatalyst material is directly attached to a conductive surface during electrodeposition [ [57], [58], [59]].…”

Section: Electrocatalytic Activity Towards Oermentioning

confidence: 99%

Functional macroporous iron-phosphorous films by electrodeposition on colloidal crystal templates

Golvano-Escobal

Paz-Castany

Alcantara

et al. 2019

Electrochimica Acta

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Pseudo-ordered macroporous iron-phosphorous (Fe-P) films have been electrodeposited potentiostatically from a citrate-sulfate bath onto Au surfaces pre-patterned with a colloidal crystal mask of polystyrene spheres of 350 nm in diameter. The electrolyte contained sodium hypophosphite as the P source, enabling the incorporation of 6-14 at.% P. For comparative purposes, continuous films have been obtained galvanostatically on unpatterned Au surfaces. In both cases, the P content could be varied to a certain extent by adjusting the deposition potential or current density. Tunable microstructure and magnetic response was observed due to the dissimilar chemical composition, with coercivity values being larger in the macroporous films. Additionally, wettability analyses showed that these were more hydrophobic, reaching contact angle values of about 130 ∘ . In spite of their hydrophobic character, the samples were catalytic toward oxygen evolution reaction (OER) in alkaline media. The macroporous Fe-P films showed faster kinetics for OER than their nonporous counterparts. Our results show that electrodeposited porous Fe-P based materials show an interesting combination of properties which make them appealing for applications including water cleaning, softmagnetic components, or electrocatalytic production of oxygen, to name a few.

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Section: Electrocatalytic Activity Towards Oermentioning

confidence: 99%

Functional macroporous iron-phosphorous films by electrodeposition on colloidal crystal templates

Golvano-Escobal

Paz-Castany

Alcantara

et al. 2019

Electrochimica Acta

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“…In addition, thanks to the high surface areas of nanomaterials, the amount of immobilized enzyme can increase and hence the biocatalytic efficiency of biosensor can be improved [1]. Rhodium (Rh) is a distinctive noble metal that exhibits chemical stability in harsh reaction environments due to its strong resistance [21,22]. In addition, it offers high surface energy and low electrical resistance as well as superior electrocatalytic properties in comparison with other noble metals Au, Pt and Pd [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it offers high surface energy and low electrical resistance as well as superior electrocatalytic properties in comparison with other noble metals Au, Pt and Pd [23][24][25]. Due to these properties, rhodium nanoparticles have been used in biosensors, fuel cells and different research areas [20,22]. Electrochemical deposition is one of the cheapest, highly efficient and easily applicable methods for nanoparticles [22].…”

Section: Introductionmentioning

confidence: 99%

“…Due to these properties, rhodium nanoparticles have been used in biosensors, fuel cells and different research areas [20,22]. Electrochemical deposition is one of the cheapest, highly efficient and easily applicable methods for nanoparticles [22]. Beside, the electrodeposition of a metal nanomaterial on a conductive matrix is preferred for achieving high-performance applications due to its high surface area, enhanced electrolyte reachability and splendid electrical contact between matrix and nanoparticles [25].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Flow‐injection Rhodium Nanoparticles Modified Phosphate Biosensor and its Operation in Artificial Urine

Kilic

2021

Electroanalysis

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A biosensor for phosphate determination with the flow‐injection system was developed using rhodium nanoparticles modified Poly(pyrrole‐co‐[1‐(2‐aminophenyl) pyrrole])/pyruvate oxidase. The biosensor showed a very wide linearity up to 70 mM phosphate concentration compared to previously reports, response time of 4 s., operational stability with a relative standard deviation of 0.009 % and accuracy of 99.4 %±0.949 at a flow rate of 2.0 Ml min.−1 at exactly −0.68 V. Detection limit were calculated to be 21±0.001 μM by preserving 81.1 % of its initial response at the end of 16th days. Artificial urine was analyzed without dilution to investigate biosensor performance.

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“…Because of better mechanical properties and high corrosion resistance, ternary alloy coatings are better than binary zinc alloy coatings [9]. In addition, iron is one of the most commonly found elements in the world [10].…”

Section: Introductionmentioning

confidence: 99%

A New Spherical Catalyst For Hydrogen Evolution Reaction

Farsak¹

2018

Cumhuriyet Science Journal

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CuFeZn composite catalysts have been prepared on the graphite electrode by electrochemical deposition as electrocatalytic materials for hydrogen evolution reaction (HER). The etching process was applied on catalysts in caustic solution to leach out zinc and to produce a porous electrocatalytic surface for hydrogen evolution. The surface morphologies were investigated by scanning electron microscopy. HER activity is assessed by recording cathodic current-potential curves, cyclic voltammetry, electrochemical impedance spectroscopy and electrolysis techniques. The results show that etched catalysts have a compact and porous structure as well as a good electrocatalytic activity for the HER in alkaline media.

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Electrodeposition of sizeable and compositionally tunable rhodium-iron nanoparticles and their activity toward hydrogen evolution reaction

Cited by 17 publications

References 37 publications

Functional macroporous iron-phosphorous films by electrodeposition on colloidal crystal templates

Functional macroporous iron-phosphorous films by electrodeposition on colloidal crystal templates

A Novel Flow‐injection Rhodium Nanoparticles Modified Phosphate Biosensor and its Operation in Artificial Urine

A New Spherical Catalyst For Hydrogen Evolution Reaction

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