Hi Rinky,

1. If your Pt composite doesn't contain any other metals, then run a CV with a same area of Pt and compare with your present CV. You can correlate the amount of Pt.

2. In Origin software you can integrate the area under the curve.

thanks a lott, but my doubt is just whole cv I will integrate or only hydrogen adsorption region? please let me know.. if particular hydrogen region thn how i will calculate area using origin?

Hi,

you have to integrate only the hydrogen adsorption region and it is possible to do using origin.

thank you so much, I calculated area using origin in that particular H+ adsorption region

Incase, if your using Nova-MetroOhm you can find the value directly!

no, i am using ch instrument

Dear Rinky,

in order to be able to help you, I need to know what CV measurement is (is it the usual capacitance-voltage measurement at some given frequency/time interval ?) and also , it would help, if you explain the term ESCA (in usual solid state physics it is Ultra High Vacuum Photoemission Machine)

With best regards

Petr

Hi Rinky,

Regarding the Pt amount deposited on the GC electrode during the electrodeposition, you may determine it by means of the Faraday's law, considering an 100% efficiency. If you can I suggest you to control de Pt concentration in solution during deposition. 

On the other hand, I agree with Sujoy on how to determine the charge from the CV.

Rinky sha, would you please let me know, how to calculate the particulate adsorption area?

Deepak, is it possible to determine from Nova-MetroOhm? from where?

Hi,

We developed a free and simple-to-use graphical software that easily calculates the  voltammetric charges and the determination of the real surface area of solid electrodes by the use of a proper conversion factor. A free article explaining all important features is also avaliable:

DOI at ResearchGate: 10.13140/RG.2.2.30813.61923.

Best regards,

thanks to all

 I have similar question but i will send you a message. Thanks.

ok sure

without using software you can use the trapezoid formula as below:

Area= (In+1+In)/2*(Vn+1-Vn)

It will give the exact value as same as from the integration.

best