Electrodeposition of Cu–Rh alloys and their use as cathodes for nitrate reduction

Comisso, Nicola; Cattarin, Sandro; Fiameni, S.; Gerbasi, R.; Mattarozzi, Luca; Musiani, Marco; Vázquez‐Gómez, Lourdes; Verlato, Enrico

doi:10.1016/j.elecom.2012.09.026

Cited by 70 publications

(40 citation statements)

References 11 publications

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“…Furthermore, several studies have investigated the nitrate electroreduction on different bimetallic, ternary metallic or alloy electrodes to improve the activity and the gaseous nitrogen selectivity due to the likely synergic effect between the different materials. For instance, significant improvement in the nitrate electroreduction was obtained with Cu-Ni [150][151][152][153], Cu-Sn [144], Cu-Rh [152,154], Cu-Zn [123,143,155] Cu-Pd [156][157][158][159], and Sn-Pd [160][161][162][163] cathodes, all of which have improved corrosion resistance and stability relative to monometallic Cu or Sn electrodes. In the case of the Cu-Zn cathode, ammonia was found as the main product by Mattarozzi et al [155].…”

Section: Electrode Materialsmentioning

confidence: 99%

State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates

Martínez

Ortiz

Ortíz

2017

Applied Catalysis B: Environmental

425

280

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates.

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Section: Electrode Materialsmentioning

confidence: 99%

State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates

Martínez

Ortiz

Ortíz

2017

Applied Catalysis B: Environmental

425

280

View full text Add to dashboard Cite

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“…Rh is known to be a very active electrode material for nitrate reduction, [29] and we have shown that Cu-Rh alloys are also good catalysts for the same reaction [30]. Therefore, it is interesting to compare a porous electrode containing Cu and Rh with porous Cu and Cu-Ni.…”

Section: Introductionmentioning

confidence: 97%

Study of Cu, Cu-Ni and Rh-modified Cu porous layers as electrode materials for the electroanalysis of nitrate and nitrite ions

Comisso¹,

Cattarin²,

Guerriero³

et al. 2015

J Solid State Electrochem

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Three porous materials (Cu, a Cu-Ni alloy with 70 at.% Cu and Rh-modified Cu) have been tested as electrodes for the electroanalysis of nitrate and nitrite ions, in either neutral or basic media, using mainly a flow injection technique. Porous Cu and Cu-Ni were prepared by electrodeposition at high current density, exploiting the transient template action of hydrogen bubbles. Rh-modified Cu electrodes were obtained from porous Cu, through a galvanic displacement reaction. All materials had a linear response for both nitrates and nitrites, at concentrations up to 10 −3 M, at least. Sensitivities, detection limits and stability were determined. Compared with Cu, used as a benchmark, (i) Rh-modified Cu had higher sensitivity for nitrates, comparable sensitivity for nitrites, lower or comparable detection limits and overall better stability; (ii) Cu-Ni had lower sensitivity, but exhibited lower detection limits and more stable performance for most analyte/medium combinations.

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“…Nitrophenol and its derivatives are by‐products produced from pesticides, herbicides and synthetic dyes and one of the most hazardous pollutants for the environment . In addition 4‐nitrophenol (4‐NP) is famous for causing damage to the central nervous system, liver, kidney, and both animal and human blood.…”

Section: Introductionmentioning

confidence: 99%

Nano NiO/AlMCM‐41, a green synergistic, highly efficient and recyclable catalyst for the reduction of nitrophenols

Derikvand

Rahmati

Azadbakht

2019

Applied Organom Chemis

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Highly ordered mesoporous molecular sieves AlMCM‐41 and a new NiO/AlMCM‐41 nanocomposite were synthesized using a sol–gel method. Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDX), and N2 adsorption desorption analyses were used to examine the structure, morphology, size and phase composition of the synthesized NiO/AlMCM‐41 nanocomposites. AlMCM‐41 embedded with NiO nanoparticles was subsequently prepared using different nickel loadings in a direct synthetic route. The results show the successful deposition of NiO nanoparticles onto the framework of AlMCM‐41. AlMCM‐41 provides enormous benefits such as environmentally safe, economic viability and porosity when used as support for NiO nanoparticles. The excellent catalytic activities of AlMCM‐41 and NiO/AlMCM‐41 were investigated for the reduction of nitrophenols (4‐NP, 2‐NP) to aminophenols (4‐AP, 2‐AP) in water at ambient temperature. The best observed performance of reduction of NP with 100% conversion into analogous amino derivatives occurred within 6 min with an estimated rate constant of 0.46 min−1. The efficiency of reduction was observed to increase as a function of NiO enrichment. The NiO/AlMCM‐41 nanocomposite could be recycled and reused up to five times without noticeable change in its structure and activity. These properties make NiO/AlMCM‐41 nanocomposite an ideal platform to study various heterogeneous catalytic processes which can have application in purification, catalysis, sensing devices, and green chemistry.

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Electrodeposition of Cu–Rh alloys and their use as cathodes for nitrate reduction

Cited by 70 publications

References 11 publications

State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates

State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates

Study of Cu, Cu-Ni and Rh-modified Cu porous layers as electrode materials for the electroanalysis of nitrate and nitrite ions

Nano NiO/AlMCM‐41, a green synergistic, highly efficient and recyclable catalyst for the reduction of nitrophenols

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