Molecular Hydrogen Formation from Photocatalysis of Methanol on TiO2(110)
Citations Over TimeTop 10% of 2013 papers
Abstract
It is well established that adding methanol to water could significantly enhance H2 production by TiO2. Recently, we have found that methanol can be photocatalytically dissociated on TiO2(110) at 400 nm via a stepwise mechanism. However, how molecular hydrogen can be formed from the photocatalyzed methanol/TiO2(110) surface is still not clear. In this work, we have investigated deuterium formation from photocatalysis of the fully deuterated methanol (CD3OD) on TiO2(110) at 400 nm using a temperature programmed desorption (TPD) technique. Photocatalytic dissociation products formaldehyde (CD2O) and D-atoms on BBO sites (via D2O TPD product) have been detected. In addition to D2O formation by heating the photocatalyzed methanol/TiO2(110) surface, we have also observed D2 product formation. D2 is clearly formed via thermal recombination of the D-atoms on the BBO sites from photocatalysis of methanol. Experimental results indicate that D2O formation is more important than D2 formation and that D2 formation is clearly affected by the D2O formation process.
Related Papers
- → Thermal desorption of surface phosphorus on Si(100) surfaces(1999)17 cited
- → Thermal desorption of Li from Si(111)(2003)4 cited
- → Thermal desorption of interacting molecules from heterogeneous surfaces; Application to co desorption from MgO(1987)65 cited
- → The Thermal Desorption Spectra Study of Hydrogen Chemisorption on Si(100) Clean Surface(1985)
- → Thermal desorption of interacting molecules from heterogeneous surfaces; application to CO desorption from MgO(1987)