Chemisorption suppression overlayers

Another approach to the chemisorption-overlayer question is to determine the degree of coverage with Auger spectroscsopy and compare this with the amount of chemisorption suppression. Two such studies have been reported and have reached opposite conclusions. In one case, varying amounts of Ti were deposited onto Pt and then oxidized to TiOx. H2 and CO adsorptions were found to... 

TRe signi ficance o TiOx-overlayer formation extends beyond the question of bonding between metals and titania. It suggests that the suppression of H2 and CO chemisorption in metal/ titania systems can be explained as simple site blockage due to the overlayer. Despite the appealing simplicity of this model the question is still open and evidence can be cited that points to a more complicated situation. Experiments have been performed under... 

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