Project Objectives
Electrochemical response of ferricyanide/ferrocyanide redox couple
Formation of Au-BSA colloidal solution
Today's Tasks
Preparation of protein modified electrodes
- Prepared protein solution without gold
- 500 μL BSA (27.7 μM) + 1.7 mL water
- prepared in glass test tube, stirred with pipet & capped until needed
- will apply drop(s) to electrode surface & compare to solution using gold
- Polished glassy carbon electrode (GCE)
- aided by Melissa Novy
- 2 GCEs will be used; CV without film will be repeated
- used new felt pad & applied 3 drops 1/4 μm diamond dust polishing solution
- used Proscope to examine surface smoothness
- 12 figure 8s; 1/4 turn; repeat
- no visual improvement after 30 minutes
- may require courser polishing solution, nylon polishing pad, and/or grinding wheel at USNA
- if no improvement by Wednesday Jan 25, will take electrodes to USNA
|