By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Science and Technology have been presented. According to news reporting from Milan, Italy, by VerticalNews journalists, research stated, "The photoactive properties of TiO2 are employed to develop surfaces with self-cleaning capabilities. Clearly, the fine-tuning of such surfaces for different applications relies on a holistic understanding of the different aspects that induce the self-cleaning behavior."
The news correspondents obtained a quote from the research from Polytechnic University, "Among those, the mechanisms responsible for the photoinduced surface alteration in the TiO2 allotropes are still not completely understood. In this study, TiO2 polymorphs nanopowders are investigated by combining the high spatial resolution observables of recently developed atomic force microscopy (AFM) based force spectroscopy techniques with diffuse reflection infrared Fourier transform spectroscopy (DRIFTS). Phase maps under irradiated and nonirradiated conditions for anatase and rutile suggest the existence of two distinct behaviors that are further discerned by energy analysis of amplitude and phase vs distance curves. Independently, surface analysis of anatase and rutile by means of DRIFTS spectroscopy reveals a readily distinguishable coexistence of dissociated water and molecular water on the two phases, confirming the stronger photoactivity of anatase."
According to the news reporters, the research concluded: "The peculiarity of the surface interaction under UV exposure is further investigated by reconstructing the force profiles between the oscillating AFM tip and the TiO2 phases with the attempt of gaining a better understanding of the mechanisms that cause the different hydrophilic properties in the TiO2 allotropes."
For more information on this research see: Nanoscale investigation of photoinduced hydrophilicity variations in anatase and rutile nanopowders. Langmuir, 2013;29(47):14512-8. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)
Our news journalists report that additional information may be obtained by contacting M.V. Diamanti, Dept. of Chemistry, Materials and Chemical Engineering G Natta, Politecnico di Milano , Via Mancinelli 7, 20131 Milan, Italy. Additional authors for this research include K.R. Gadelrab, M.P. Pedeferri, M. Stefancich, S.O. Pehkonen and M. Chiesa.
Keywords for this news article include: Milan, Italy, Europe, Science and Technology.
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