Platinum-titanium dioxide film

The electrocatalytic behavior of olefins was studied by Zanta et al. (2000) at thermally prepared ruthenium-titanium- and iridium-titanium-dioxide-coated anodes. The aliphatic olefins were shown to be inactive in the region before oxygen evolution, while aromatic ones showed one or two oxidation peaks, and the catalytic activity seemed to be the same for both substrates. However, as for platinum anodes, voltammetric studies and FTIR analyses have also shown the formation of a polymeric film that blocks the surface of the electrode and decreases its activity. 

Illustrated in Figure 3.13, under operation a high-pressure mercury lamp was used to irradiate the photo-sensitive titanium dioxide thin film in the reactor, loaded with platinum catalyst. Conversion of the feedstock at 87% was achieved in 52 seconds. 

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