Soumen Dutta

9 Questions 9 Answers 0 Followers

Questions related from Soumen Dutta

Is is possible to break CLEA-lipase to its monomer though buffer treatment?

I have one doubt with CLEA-lipase enzyme. CLEA lipase is not soluble in water/buffer solution, it gives some sort of dispersion of CLEA-lipase. However, when I put CLEA-lipase in tris buffer...

06 June 2019 9,090 2 View

Does the appearance of well resolved peaks of hydrogen desorption/adsorption with Pd/C or Pt/C catalysts in CV depend on concentration of KOH?

it is often found that hydrogen desorption/adsorption peaks for Pd/C or Pt/C based materials in concentrated electrolyte solution e.g. 1 M KOH/H2SO4 are not clearly appeared. Diluting the...

11 November 2015 7,467 5 View

Why the shell nature of Au core-M shell (M= Pd or Pt) particles differs considering Pt or Pd as shell element?

In a seed mediated process or two steps synthetic approach using Au NPs as seeds, it has been found that Pd forms ideal shell on Au core. But Pt NPs at the exterior of Au core are present as...

09 September 2015 7,084 3 View

How can I prepare the solution for ICP-MS analysis of the individual elements for a carbon supported bimetallic (Au-Pd) nanocomposites?

The composite is powder. I want to know the elemental percentage of each element. Please help me. Thank you in advance.

05 May 2015 8,854 5 View

Is If/Ib (ratio of current densities in forward and backword scan) is the ultimate measure of CO poisioning in MOR?

In my case our synthesized bare Pt catalyst shows lower If/Ib value than commercial Pt/C. But chronoamperometric (CA) test and 100th cycle experiment indicates the higher stability and durability...

12 December 2014 5,159 3 View

Is this necessary to perform MOR by Pt in acidic condition?

In my case platinum nanostructure shows lower electrocatalytic activity for methanol oxidation in acidic condition than basic condition. Both current density and stability (i vs t ) decreases in...

10 October 2014 775 8 View

How to calculate electrochemical active surface area (ECSA) for Pt based material from a CV curve in 1 M H2SO4 solution?

I know the equation. Will there be any contribution from the scan rate or potential window for the calculation? In my case the area under the graph is 0.7368 (directly from Origin 8.0), potential...

09 September 2014 6,058 9 View

How can somebody perform CO stripping test? Is this mandatory to test this experiment for Pt based catalysts?

Can we measure CO stripping test by simple CV machine? Please give me the procedure in detail.

09 September 2014 3,989 3 View

If somebody wants to compare electrocatalytic property with commercial 20% Pt on C, is this necessary to multiply the results for Pt/C by 5?

For ECSA calculation the value should be multiplied by 5 for 20% Pt/C. But for current density (in terms of geometrical area of GCE), mass activity cases is his necessary?

09 September 2014 3,228 5 View