Study of far infrared optical properties and, photocatalytic activity of ZnO/ZnS hetero-nanocomposite structure


ZnO nanoplates/ZnS nanoparticles as a hetero-nanocomposite structure was prepared by a single pot precipitation method without using any capping ligands or other additives. The morphology of the prepared nanocomposite was studied by scanning electron microscopy (SEM). Optical properties of the prepared samples were studied by UV-visible reflectance and Raman spectroscopy. The FT-IR spectroscopy along with the Kramers-Kronig (k-k) method and classical dispersion theory were utilized to calculate far-infrared optical constants of the prepared samples. The photocatalytic activity of the prepared nanoheterostructure was also assessed in the gas-solid phase, by monitoring the NOx abatement using a white-lamp to re-create an indoor environment.



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Zamiri, R; Tobaldi, DM; Ahangar, HA; Rebelo, A; Seabra, MP; Belsley, MS; Ferreira, JMF

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The author Reza Zamiri, would like to express his personal thanks to FCT (Fundacao para a Ciencia e a Tecnologia) for post-doctoral research grant with reference numbers (SFRH/BPD/76185/2011). David M. Tobaldi is grateful to the ECO-SEE project (European Union's Seventh Framework Programme funding, grant agreement no 609234). Note: The views expressed are purely those of the authors and may not in any circumstances be regarded as stating an official position of the European Commission. The support from CICECO is also acknowledged.

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