Cesar Ortiz Ledon

9 Questions 23 Answers 0 Followers

Questions related from Cesar Ortiz Ledon

Is there an error associate to the constant for the reduction of a PtO monolayer when deterimining the electroactive surface area of Pt ?

When the Hads/Hdes peaks are not being formed due the low amount of Pt I'm using the PtO reduction peak for determining the electroactive surface area now the constant has a value of 420...

09 September 2016 7,691 0 View

Is there a method to synthesize Pt nanoparticles of a size of 4 nm without using sodium borohydride reduction?

I'm trying to avoid the aggregation caused by sodium borohydride and if there is a reference where they developed a method of synthesis for such a small nanoparticle size without using sodium...

03 March 2015 9,165 3 View

Why my Au microelectrodes is not reaching a steady state current at a chronoamperogram?

I'm recording chronoamperograms at different potentials in a gold 10 micrometer diameter microelectrode in hydrazine solution but it seems that my electrode is not reaching a steady state. The...

01 January 2015 4,796 12 View

How can I know the value for |z|, which is the charge when evaluating platinum nanoparticles?

I want to find the mobility of platinum nanoparticles first theoretical then experimentally, is there any publication where a charge number is consider for a platinum nanoparticle of a 4 nm diameter.

12 December 2014 3,228 3 View

How can you include the pH parameter for cyclic voltammetry in Digielch in a catalytic reaction mechanism?

I'm trying to get some kinetic information with different pH for HER

12 December 2014 2,410 2 View

Does anyone know about the ratios to differentiate when we have diffusion controlled or when we have migration during steady state voltammetry?

I really want to see if there are some ratios that can define when you are in a diffusion controlled system or you are starting to get migration. I'm using ultramicroelectrodes on inner sphere...

11 November 2014 840 2 View

How can I calculate accuretely the concentration of Pt nanoparticles I synthesized (size is 4 nm)?

My calculation tells me I supposed to have 1 micromolar but I dont I have try it several times and same problem I get about 40 nM of Pt nanoparticles

09 September 2014 1,818 11 View

What material is better to have a flat surface on a microelectrode diamond lapping film or alumina lapping film?

I need to get a really flat surface of a Au microelectrode

07 July 2014 6,833 1 View

For the oxidation of hydrazine on PBS pH 7, can the salt bridge with the KCLO4 be the reason that my potential is different than my reference?

The only difference between my reference article and my experiment is the salt bridge (using potassium perchlorate). I'm not using the salt bridge with that electrolyte but the reference...

02 February 2014 686 1 View