SEC-3F Spectroelectrochemical flow cell
Using the spectroelectrochemical flow cell, it is possible to have a different optical path length changing the gasket. We offer, as an optional item, a silicon and Teflon gasket with a 100, 250 and 500 µm of the thickness. SEC-3F Spectroelectrochemical flow cell was designed to fit perfectly in the SEC2020 Spectrometer, and it eliminated the use of the optical fiber to connect the Spectrometer to the SEC-3F. Even for another brand of the spectrometer, you can connect the SEC-3F using the collimating lens and optical fiber.
- Structure
- Configuration
- Working electrode
- Optional items
| Catalog No. | Description | |
| 013684 | SEC-3F Spectroelectrochemical flow cell | |
| Contensts | Quantity | |
| - | SEC-3F flow cell block A | 1 pc |
| - | SEC-3F flow cell block B | 1 pc |
| - | SEC-2F/3F S500 Silicone Gasket | 2 pcs |
| - | Stainless tube OD 1/16" (50 mm) | 1 pc |
| - | Needle adaptor | 1 pc |
| - | Fitting PEEK | 2 pcs |
| - | Silicon tube (30 mm) | 1 pc |
| - | Teflon tube (1 m) | 1 pc |
Configuration example of electrochemical analyzer and spectroelectrochemical flow cell
For the system set-up, spectrometer (detector), light source, optical fiber, electrochemical analyzer, spectroelectrochemical flow cell, the liquid feed pump (or syringe), and the PC for data processing are
required. ITO electrode or platinum, gold or carbon grid electrode could be used as a working electrode.
Working electrode for spectroelectrochemical flow cell
Grid type electrode and ITO electrode are using in the spectroelectrochemical flow cell.
- Grid electrode or ITO electrode, it is setting in the side where the light is transmitted through it.
- Light is irradiated to the working electrode, using the optical fiber connected to the light source.
- The changes in the concentration of the reactants on the surface of electrode, as in a electrolysis reaction, will consequently change the spectrum transmission for the component.
- The change of transmission light quantity can be detected by CCD array detector.
Schematic structure is shown below.
The light transmittance was compared with ITO electrode and Grid electrode (Au, Pt and Carbon) on a quartz glass as a reference.
For ITO electrode the light cannot be transmitted easily in an ultraviolet range. The transmittance is about 10% at 280 nm of the wavelength. For wavelength above 400 nm the transmittance is above 80%.
Compared with the quartz glass, the light transmission for grid electrode is about 30%, however it could be used in an ultraviolet range.
Reference data:The light transmittance is 50 ∼55% for SEC-C Platinum mesh electrode.
Working electrode
| Catalog No. | Description | Size |
| 012655 | SEC-2F/3F Pt grid electrode for flow cell | 8x27x1 mmt |
| 012656 | SEC-2F/3F Au grid electrode for flow cell | 8x27x1 mmt |
| 012657 | SEC-2F/3F Carbon grid electrode for flow cell | 8x27x1 mmt |
| 013432 | ITO11 electrode 8x27x1.1 mm (10 pcs) | 8x27x1.1 mmt |
Gasket
| Catalog No. | Description | Size |
| 012661 | SEC-2F/3F S500 Silicone Gasket, 4 pcs | 500 µmt |
| 012664 | SEC-2F/3F T500 Teflon Gasket, 4 pcs | 500 µmt |
| 012665 | SEC-2F/3F T250 Teflon Gasket, 4 pcs | 250 µmt |
| 012666 | SEC-2F/3F T100 Teflon Gasket, 4 pcs | 100 µmt |
●Handling of the thinner gasket is complicated. When you use a thin gasket, please pay attention with the flow rate.
Reference electrode
| Catalog No. | Description | Size |
| 013488 | RE-3VT Reference electrode screw type (Ag/AgCl) | dia. 10 mm, L: 52 mm |
| 013850 | RE-7VN Non Aqueous reference electrode screw type | dia. 10 mm, L: 52 mm |
Fiber and Lens
| Catalog No. | Description | Size |
| 012667 | SEC-2F/3F 400 µm Optical Fiber | 25 cm |
| 012685 | SEC-2F/3F 400 µm Optical Fiber | 2 m |
| 013688 | UV/VIS Collimating Lens, 200-2000 nm | |
Other related products
| Catalog No. | Description |
| 013609 | SEC2020 Spectrometer system |
| 013345 | Model2325 Bi-Potentiostat |
| 013349 | Model2325 Software |