Spectroelectrochemical flow cell
Applications:
- Study of charge transfer mechanism on the interface between electrode and electrolyte.
- Spectroscopy on electrode surface or in near neighborhood.
- Absorption spectra of products and intermediates.
- Analysis of concentration, diffusion coeffi cient, life time
so on.
Schematic view of flow cell ( thin layer fl ow channel, light pass and working electrode) is shown below left. The working electrodes( ITO, platinum mini-grid, and gold mini-grid) are replaceable. UV or visible light is introduced via optical-fi ber from light source and absorbed light is transferred into CCD via optical-fi ber. Example of spectrum change during oxidation-reduction of ferrocene by CV is shown below right.
Spectroelectrochemical electrodes
Schematic diagram of spectroelectrochemical flow cell
Click
Pt and Gold mini Grid electrode
Pt mini-grid electrode is made by sputtering on quartz plate as
shown in below picture. Size is 8 × 27mm, width of grid line is
100μm, space between lines is 150µm.
Spectroelectrochemical system with Flow cell kit
Fiber optic spectrometer was used in this measuring system;
Lights is transmitted by optic fibers over a proper wavelength
through electrode. The lights absorption, which occurred by
electrolysis on the electrode, can be detected by spectrometer.
Figure1.The absorbance of ferrocene and products in acetonitrile
with TEAP.Electrolysis
conditions： electrolyzed at 800ｍV for 400 second using ITO working
electrode.
Click to enlargeFigure 2. The absorbance of potassium hexacyanoferrate(II) and
products in KNO3 .
Electrolysis conditions: electrolyzed at 500mVfor 300 second using
ITO working electrode.
Click to enlargeThe change of absorbance due to oxidation/reduction during electrolysis measurement can be observed clearly. When a sample is active spectroscopically and electrochemically, deepunderstanding of the reaction mechanism can be obtained by analyzing it simultaneously.
| Cat No. | Description |
| 011536 | SEC-F Spectroelectrochemical flow cell |
| Components | |
| 011537 | SEC-F flow cell base |
| 011538 | SEC-F flow cell block(A) |
| 011539 | SEC-F flow cell block(B) |
| 011540 | SEC-FT500 Teflon gasket (2pcs) |
| 011912 | 74-UV UV/VIS Collimating Lens, 200-2000 nm |
| ------ | Dynaseal PEEK fingertight(2pcs) |
| ------ | Teflon Tubing (80cm) |
| ------ | Silicon Tubing (30cm) |
| ------ | Stainless Tubing OD 1/16" (50mm) |
Optional Products
| Cat No. | Description | |
| 011994 | SEC-F 1000um probe type of optical fiber | Length:1m |
| 011541 | SEC-F Pt grid electrode for flow cell | 8 x 27 x 1mmt |
| 011542 | SEC-F Au grid electrode for flow cell | 8 x 27 x 1mmt |
| 011543 | SEC-F ITO electrode for flow cell (4pcs) | 8 x 27 x 1mmt |
| 010298 | RE-3V Silver-silver chloride Reference electrode Screw type | φ10 x 55mm |
| 011545 | RE-5V Non Aqueous reference electrode(Ag/Ag+) Screw type | φ10 x 55mm |
- Technical Data
regarding SEC-F
