The influence of metal cluster size on adsorption energies: CO adsorbed on Au clusters supported on TiO2.
نویسندگان
چکیده
Infrared reflection absorption spectroscopy (IRAS) has been used to study CO adsorption on Au clusters ranging in size from 1.8 to 3.1 nm, supported on TiO(2). The adsorbed CO vibrational frequency blue-shifts slightly (approximately 4 cm(-)(1)) compared to that adsorbed on bulk Au, whereas the heats of adsorption (-DeltaH(ads)) increase sharply with decreasing cluster size, from 12.5 to 18.3 kcal/mol.
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 126 6 شماره
صفحات -
تاریخ انتشار 2004