POLYOXOMETALATE DERIVATIZED METAL OXIDE ELECTRODES

摘要

A porous transparent electrode is formed where a film comprising of semiconducting nanoparticles is decorated with polyoxometalates (POMs) bonded to their surfaces. The semiconducting nanoparticles are transparent metal oxide. The semiconducting nanoparticles include tin-doped indium oxide (ITO), fluorine-doped tin oxide (FTO), or titanium dioxide (TiO₂). In an embodiment, the POM is [SiW₁₂O₄₀]⁴⁻; [α-P₂W₁₈O₆₂]⁶⁻; or [α₂-P₂W₁₇O₆₁]¹⁰⁻. The semiconducting nanoparticles bond to the POM through a combination of electrostatic interactions and hydrogen bonds. The porous transparent electrode can be placed in a protonated form or ion-paired with alkali metal cations or tetraalkylammonium cations.