Abstract
AbstractSeveral photoelectrochemical flow cells have been designed and their analytical performances evaluated and compared. Two cell geometries, thin‐layer and wall‐jet, and three irradiation configurations differing in the relative position of the irradiation and detection points have been considered. In the first configuration (“adjacent”), the irradiation point is located upstream of the working electrode. In the second arrangement (“above”), the light irradiates the solution above the working electrode as well as the electrode surface. The third configuration (“on”) involves the use of an optically transparent electrode through which the light passes before irradiating the solution present on the electrode surface. The “adjacent” thin‐layer cell was found to be the most practical and useful design. The photoelectrochemical efficiency of this cell was optimized and evaluated in terms of window and channel size.
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