User:Cassidy B. Hart/Notebook/CHEM-471: Gold & Silver Nanoparticles/2017/02/08: Difference between revisions

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* 1 M KCl sonicated Test 1
* 1 M KCl sonicated Test 1


[[Image:ECHarveyHart4.png|600px]]
[[Image:ECHarveyHart4.png|600px]]<br/>
'''Figure 1''' dV=.068V<br/>


* 1 M KCl sonicated Test 2
* 1 M KCl sonicated Test 2


[[Image:ECHarveyHart5.png|600px]]
[[Image:ECHarveyHart5.png|600px]]<br/>
'''Figure 2''' dV=.066V <br/>


* 1 M KCl sonicated Test 3
* 1 M KCl sonicated Test 3


[[Image:ECHarveyHart6.png|600px]]
[[Image:ECHarveyHart6.png|600px]]<br/>
'''Figure 3''' dV=.066V <br/>


* Nanofibers 6 uLTest 1  
* Nanofibers 6 uLTest 1  


[[Image:KCl 1M 6uL Nano Test 1.png|600px]]
[[Image:KCl 1M 6uL Nano Test 1.png|600px]]<br/>
'''Figure 4''' dV=.075V <br/>


* Nanofibers 6uL Test 2
* Nanofibers 6uL Test 2


[[Image:EMHarveyHart2.png|600px]]
[[Image:EMHarveyHart2.png|600px]]<br/>
'''Figure 5''' dV=.094V <br/>


* Nanofibers 6uL Test 3
* Nanofibers 6uL Test 3


[[Image:ECHartHarvey3.png|600px]]
[[Image:ECHartHarvey3.png|600px]]<br/>
'''Figure 6''' dV=.079V <br/>


*Nanofibers 10uL Test 1
*Nanofibers 10uL Test 1


[[Image:ECHarveyHart7.png|600px]]
[[Image:ECHarveyHart7.png|600px]]<br/>
'''Figure 7''' dV=.092V <br/>
 
*Nanofibers 10μL Test 2
 
[[Image:Nano 10uL Ru hex 5mM - 1 M KCl - sonicated -2.png|600px]] <br/>
'''Figure 8''' dV=.086V <br/>


==Results==
==Results==

Revision as of 10:36, 14 February 2017

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Electrochemistry

Purpose

To determine if coating the glassy carbon electrode with nanofibers blocked electron transfer.

Protocol

  • CH Instruments Electrochemical Analyzer was used.
  1. 5 mM hexaammineruthenium(III) chloride and 1M KCl solution was used in electrochemical cell.
  2. The glassy carbon electrode was cleaned with 0.3 and then 0.05 alumina slurry and then sonicated.
  3. The reference electrode, the platinum wire, and the GCE were attached to the instrument.
  4. The parameters were set at:
  • Initial: 0.2
  • High: 0.2
  • Low: -0.4
  • Initial Scan: Negative
  • Scan Rate: 0.05
  • Segments: 4
  • Sensitivity 1x10^(-5)
  • Sample Interval: 0.001
  1. Then the instrument was ran.
  2. This same procedure was repeated twice before being repeated a third time with the addition of 6uL of nanofibers which had been dropped onto the GCE and allowed to dry.
  3. The nanofibers had been centrifued at 1300rpm for 1 minute.
  • 6uL nanofibers take about 15 minutes to dry
  • 10uL nanofibers take about 25 minutes to dry

Data

  • 1 M KCl sonicated Test 1


Figure 1 dV=.068V

  • 1 M KCl sonicated Test 2


Figure 2 dV=.066V

  • 1 M KCl sonicated Test 3


Figure 3 dV=.066V

  • Nanofibers 6 uLTest 1


Figure 4 dV=.075V

  • Nanofibers 6uL Test 2


Figure 5 dV=.094V

  • Nanofibers 6uL Test 3


Figure 6 dV=.079V

  • Nanofibers 10uL Test 1


Figure 7 dV=.092V

  • Nanofibers 10μL Test 2


Figure 8 dV=.086V

Results

  • The sonication decreased the separation between peaks and was added to the permanent protocol.
  • The nanofibers did not completely block electron transfer.
  • They did cause the separation between peaks to increase and also decreased the magnitude of current measured.

Notes

Hannah Harvey


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