I have to do morphology characterization of the modified working electrode. At present, I only have CV instrument with me. Can anyone help if I can do electrochemical surface characterization, i.e. how the size of particles will change the redox potential?
Hi~
I think anodic peak potential linearly decreases when particle diameter increases similarly cathodic peak potential linearly increases when particle diameter increases. This indicates that the decreasing of nanoparticle size can facilitate oxidation and reduction reactions. Therefore it can be assumed that the smaller nanoparticles are more sensitive and reactive than bigger particles.
hope the question is answered!
It depends on many parameters, at first you must consider what you are dealing with.
Have you dropcasted nanoparticles onto electrode surface? Or your electrode itself has different particles in its beak? Is it a heterogeneous material?
Not only the size, but also the composition and conditions interfere and can alter peak potentials.
If you have a hybrid material, or even a composite, you can not ohmic drop, if you are dealing with some nanoparticles, you can note electrocatalysis depending on material composition and size, apace among particles... consider if you have or not overlapping of diffusion layers...
Read "Electroanalytical Methods, by Fritz Scholz", we also have many reviews regarding particle properties and sizes...
Hereby I send some suggestions in attachment, maybe you can figure out some useful info!
Whish you all success!
@ Kiesar Sideeq
Thanks for your answer! Can I do this as a part of electrochemical surface characterization, if I study the variation of size of particles with redox potential.
@ Semaan
I am dealing with nanoparticles on electrode surface and As you said "you can note electrocatalysis depending on material composition and size, apace among particles". Can you suggest how can it be done using CV?
- Badges
- Science topic
- Similar topics
- Engineering
- Electrical Engineering
- Electrodes