Shared by Dr. Csaba Janáky, principal investigator of the MTA-SZTE "Lendület" Photoelectrochemistry Research Group
Title of the paper: Photocatalytic Activity of Inorganic Semiconductor Surfaces: Myths, Hype, and Reality
Authors: Krishnan Rajeshwar, Abegayl Thomas, Csaba Janáky
University/Institute: University of Szeged / University of Texas at Arlington
Abstract: The notion of driving chemical and biochemical reactions on irradiated inorganic semiconductor surfaces has both fundamental and practical importance. The name “heterogeneous photocatalysis” has been coined for this field of endeavor, and it is hardly surprising that the field has literally exploded during the past couple of decades. Nevertheless, process efficiencies remain poor, and quantum yields have been disappointingly low (amounting only to fractions of a percent) even for well-studied semiconductors such as titanium dioxide, TiO2. Therefore, the time appears ripe to take stock of what we know and what we do not know about photoinduced processes at the molecular level. While impressive advances have been made in the surface science of oxide semiconductors (especially, TiO2), much of this understanding resides with surfaces as they exist in pristine, ultrahigh vacuum conditions. On the other hand, little is known about inorganic semiconductor surfaces in contact with air or water and under conditions as they relate to the practical use of such interfaces. Here, we will critically examine what we know about the structural and chemical factors related to such interfaces and what knowledge is further needed to move this field forward.
Journal, Issue, Page Nr.: The Journal of Physical Chemistry Letters 6 (1), 139-147
Links to the paper (link to the journal webpage): Photocatalytic Activity of Inorganic Semiconductor Surfaces: Myths,...