Anodic corrosion and passivation of Pt in Cl− solutions

Bittles, J.A.; Littauer, E. L.

doi:10.1016/s0010-938x(70)80095-6

Cited by 21 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrode selection may be influenced in part by their robustness to the reaction conditions. Electrode degradation of Pt, graphite, , glassy carbon, and boron-doped diamond (BDD) anodes has been characterized in the literature. Cathodic corrosion can also result in degradation of cathodes, and details on its process and mitigation strategies have been recently reviewed …”

Section: Basics Of Electrochemistry and Photoredox Catalysismentioning

confidence: 99%

Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis

2021

View full text Add to dashboard Cite

Redox processes are at the heart of synthetic methods that rely on either electrochemistry or photoredox catalysis, but how do electrochemistry and photoredox catalysis compare? Both approaches provide access to high energy intermediates (e.g., radicals) that enable bond formations not constrained by the rules of ionic or 2 electron (e) mechanisms. Instead, they enable 1e mechanisms capable of bypassing electronic or steric limitations and protecting group requirements, thus enabling synthetic chemists to disconnect molecules in new and different ways. However, while providing access to similar intermediates, electrochemistry and photoredox catalysis differ in several physical chemistry principles. Understanding those differences can be key to designing new transformations and forging new bond disconnections. This review aims to highlight these differences and similarities between electrochemistry and photoredox catalysis by comparing their underlying physical chemistry principles and describing their impact on electrochemical and photochemical methods.

show abstract

Section: Basics Of Electrochemistry and Photoredox Catalysismentioning

confidence: 99%

Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis

2021

View full text Add to dashboard Cite

show abstract

“…Some successful implementations of stable integrated Ag/AgCl reference electrodes have been made, using laminar flow [32] or a nanochannel [33] in order to separate the sample electrolyte from the reference electrolyte while maintaining electrical contact. When working with platinum or gold electrodes however, it is advisable to avoid the presence of chloride ions due to adsorption and anodic corrosion of the electrode [34][35][36]. A certain constant amount of Clions is necessary to maintain a thermodynamically stable reference potential, and concentrations down to 10 ppm [37] can be harmful, especially to nanoparticle catalysts.…”

Section: Introductionmentioning

confidence: 99%

A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments

Fanavoll

Harrington

Sunde

et al. 2017

Electrochimica Acta

View full text Add to dashboard Cite

A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments. Electrochimica Acta, 225, 69-77. AbstractAn on-chip thin-film palladium hydride reference electrode is described for use with microfluidic electrochemical cells. A Pd electrode fabricated by photolithographic methods is charged with hydrogen in-situ with a simple current step technique. The placement of the reference electrode in a side channel means that it is unaffected by species in the main channel. Placement upstream of the working and sense electrodes is shown to be a significant improvement over cells with the reference electrode placed externally. The adverse effects of solution resistance are investigated quantitatively, and it is shown that the described configuration allows for high current experiments while maintaining accurate potential measurement. A simple formula for calculating the maximum current density for a certain cell geometry and electrolyte resistivity is presented.

show abstract

“…Recently Littauer and Shreir [13] and Bittles and Littauer [14] hundred millivolts. The value of the plateau current increased with increasing chloride concentration in the solution and with decreasing pH.…”

Section: Discussionmentioning

confidence: 99%

Anodic chlorate formation on platinized titanium

Landolt

Ibl

1972

J Appl Electrochem

View full text Add to dashboard Cite

The mechanism of anodic chlorate formation on platinized titanium was studied under well-controlled forced-convection conditions identical to those of previous experiments with graphite. Experimental results obtained in 4 M NaC1 and in 0.05 u NaC1 were compared to those predicted by mass transfer models describing anodic chlorate formation on graphite. In concentrated NaC1 solution anodic chlorate formation rates for both electrode materials are smaller than expected for a diffusion controlled process. In dilute NaCI the ratio between measured rates and those predicted for diffusion control is shifted to higher values in qualitative agreement with predictions. Quantitative differences observed between the two electrode materials were attributed to the fact that hypochlorite oxidation on platinized titanium did not proceed at limiting current because of the slowness of the heterogeneous oxidation reaction.

show abstract

Anodic corrosion and passivation of Pt in Cl− solutions

Cited by 21 publications

References 14 publications

Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis

Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis

A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments

Anodic chlorate formation on platinized titanium

Contact Info

Product

Resources

About