Copper NPs decorated titania: A novel synthesis by high energy US with a study of the photocatalytic activity under visible light.
作者： Marta Stucchi , Claudia L. Bianchi , Carlo Pirola , Giuseppina Cerrato , Sara Morandi
DOI: 10.1016/J.ULTSONCH.2016.01.015
关键词:
摘要: The most important drawback of the use TiO2 as photocatalyst is its lack activity under visible light. To overcome this problem, surface modification commercial micro-sized by means high-energy ultrasound (US), employing CuCl2 precursor molecule to obtain both metallic copper well oxides species at surface, here. We have prepared samples with different content, in order evaluate impact on photocatalytic performances semiconductor, and studied particular photodegradation gas phase some volatile organic molecules (VOCs), namely acetone acetaldehyde. used a LED lamp only contribution wavelengths activation (typical lights no emission UV region). employed several techniques (i.e., HR-TEM, XRD, FT-IR UV-Vis) characterize samples, thus evidencing sample morphologies function various coherent correlation between them results. Firstly, we demonstrated possibility US modify TiO2, even when it well; secondly, avoiding completely irradiation, confirmed that pure not activated On other hand, showed metal nanoparticles strongly positively affect activity.
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