Vanessa Geh

5 Questions 7 Answers 0 Followers

Questions related from Vanessa Geh

Enzymatic glucose detection - reduction of oxygen?

Hey everyone, I am working on enzymatic glucose sensing using glucose oxidase. To find the concentration of glucose, we can either do it by measuring the oxygen consumed, or by measuring the...

27 April 2021 5,811 0 View

BET surface area of ZIF-8 N2 adsorption isotherm mistakes?

I did the N2 adsorption-desorption of my synthesised ZIF-8 at 77K using TriStar. The sample was degassed at 100 degree C for 12 hours under vacuum. The BET surface area that I got is around 8.3...

12 October 2020 4,185 11 View

N2 isotherms with increase desorption curve

Has anyone seen a desorption curve in such manner? The quantity adsorbed increased with the decrease of relative pressure. Isn't the N2 supposed to be desorbed from the layer or pores of the...

01 January 1970 5,235 3 View

What can you interpret from this Graphene Oxide SEM?

I am trying to figure out what the SEM tells us about the GO (4 mg/mL, monolayer content > 95%). Could anyone explain what are those "strands" on the SEM? Any help would be greatly appreciated!

01 January 1970 565 4 View

Electrochemical impedance spectroscopy (EIS) for bare glassy carbon electrode using Gamry - why is there no semicircle?

Hello everyone! I am trying to run a potentiostatic EIS on a bare GCE using Gamry instrument interface 1000. I did the experiment in 0.1 M KCl containing 5 mM of potassium ferricyanide &...

01 January 1970 9,282 4 View