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Type: 
Journal
Description: 
Laser irradiation in liquid is a green, low cost, and tunable technique that can be used in order to improve solar photocatalytic activity of inorganic semiconductors. The interaction between the semiconductor and the dispersing medium is a key parameter to be investigated before and after the laser modification, since it can affect the final morphological and chemical–physical properties of the material. In this work, titania colloids were properly modified by UV laser irradiation process in different solvents. The interaction of solvents (water or ethanol) with titania surface was investigated by spectroscopic characterizations and ab initio calculations based on structure predictions at a density functional theory level. Both solvents interact with oxygen vacancies on titania surface, resulting in a partial or complete passivation of defects by water and ethanol molecules, respectively. The modified samples showed an increase …
Publisher: 
American Chemical Society
Publication date: 
25 Aug 2020
Authors: 

Simona Filice, Roberto Fiorenza, Riccardo Reitano, Silvia Scalese, Salvatore Scire, Giuseppe Fisicaro, Ioannis Deretzis, Antonino La Magna, Corrado Bongiorno, Giuseppe Compagnini

Biblio References: 
Volume: 3 Issue: 9 Pages: 9127-9140
Origin: 
ACS Applied Nano Materials