Inkjet-printed interdigitated cells for photoelectrochemical oxidation of diluted aqueous pollutants

摘要: Planar, interdigitated photoelectrochemical cells were made by inkjet printing. The electrode fingers had widths ranging from 200 to 1500 µm and revealed printing a positive protective polymer mask on fluorine-doped tin oxide-coated glass slides subsequent etching. One finger family was overprinted an ink-jettable sol–gel composition based titanium propoxide which then converted into TiO2 annealing in air. An incident photon current conversion efficiency of 0.19 obtained at 360 nm for 200-nm-thick films. influence geometry titania thickness the electrochemical properties resulting is discussed detail. Due layout, response not suffering iR drop down low electrolyte ionic strengths. printed used photoelectrocatalytic degradation experiments aqueous solutions benzoic acid broadband ultraviolet irradiation (UVA) electric bias 1 V delivered considerable acceleration process compared plain photocatalytic mode.