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The Photocatalytic H2 production from H2O over TiO2 has attracted tremendous attention in recent years,the H2 production over TiO2 surface has not been successful until very recently.1 The desorption of bridging hydroxyls(BBOHs)to form H2 was found to be possible on TiO2(110)surface.2 However,the yield of H2 is low,and the majority of BBOHs desorbs as H2O.