Redox potential
Redox potential – CV
Acetonitrile
Adjusted sensitivity
Each ;line represents diff scan rates all been overlayed on one digarm
Scan rates ranged from 0 .1 s-1 to 1
Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide
Glycol
Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero
Therefore m is = everything else
C = concentration 0.05 M ethylene glycol (acetonitrile ?) two e- transfer
A = area of platinium elecrtrode given work out D (diffusion coefficient) of iodide
Prelim
have to wrk out open circuit potential diff between no light and light on. Increase in potential due to light being absorbed + find open circuit potential then add 0.5V to ocp that gives boundarys high end pottetnial is 0.5 added to OCP. Low end potential should be zero but taken further to allow easier read off. This is used as values on cyclic voltammetry.
One light and one dark on all graphs.
Short circuit value is where cv potential is zero
Short circuit current is where cv potential is Zero.
Redox potential – CV
Acetonitrile
Adjusted sensitivity
Each ;line represents diff scan rates all been overlayed on one digarm
Scan rates ranged from 0 .1 s-1 to 1
Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide
Glycol
Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero
Therefore m is = everything else
C = concentration 0.05 M ethylene glycol (acetonitrile ?) two e- transfer
A = area of platinium elecrtrode given work out D (diffusion coefficient) of iodide
Prelim
have to wrk out open circuit potential diff between no light and light on. Increase in potential due to light being absorbed + find open circuit potential then add 0.5V to ocp that gives boundarys high end pottetnial is 0.5 added to OCP.
Acetonitrile
Adjusted sensitivity
Each ;line represents diff scan rates all been overlayed on one digarm
Scan rates ranged from 0 .1 s-1 to 1
Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide
Glycol
Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero
Therefore m is = everything else
C = concentration 0.05 M ethylene glycol (acetonitrile ?) two e- transfer
A = area of platinium elecrtrode given work out D (diffusion coefficient) of iodide
Prelim
have to wrk out open circuit potential diff between no light and light on. Increase in potential due to light being absorbed + find open circuit potential then add 0.5V to ocp that gives boundarys high end pottetnial is 0.5 added to OCP. Low end potential should be zero but taken further to allow easier read off. This is used as values on cyclic voltammetry.
One light and one dark on all graphs.
Short circuit value is where cv potential is zero
Short circuit current is where cv potential is Zero.
Redox potential – CV
Acetonitrile
Adjusted sensitivity
Each ;line represents diff scan rates all been overlayed on one digarm
Scan rates ranged from 0 .1 s-1 to 1
Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide
Glycol
Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero
Therefore m is = everything else
C = concentration 0.05 M ethylene glycol (acetonitrile ?) two e- transfer
A = area of platinium elecrtrode given work out D (diffusion coefficient) of iodide
Prelim
have to wrk out open circuit potential diff between no light and light on. Increase in potential due to light being absorbed + find open circuit potential then add 0.5V to ocp that gives boundarys high end pottetnial is 0.5 added to OCP.