TY: JOUR T1 - Fabricating and characterising ZnO-ZnS-Ag2S ternary nanostructures with efficient solar-light photocatalytic activity A1 - Zamiri, R. A1 - Ahangar, H. Abbastabar A1 - Tobaldi, D. M. A1 - Rebelo, A. A1 - Seabra, M. P. A1 - Shabani, M. A1 - Ferreira, J. M. F. N2 - ZnO-ZnS-Ag2S ternary nanostructures were prepared by a simple and low-cost chemical precipitation method. The sample was characterised by X-ray diffraction, energy-dispersive X-ray, UV-Vis-NIR, Raman and Fourier transform infrared spectroscopy. Morphology of the sample was studied by scanning electron microscopy and it was observed that ZnO nanoplates were covered with ZnS and Ag2S nanoparticles. A high resolution transmission electron microscope was used to obtain further information about the crystalline domains of the prepared ternary nanostructure. The Kramers-Kronig method and classical dispersion theory were utilised to study the optical properties of the sample in the far-infrared region. Photocatalytic activity of the prepared samples was also attained in the gas solid phase by using a solar lamp (simulating outdoor lighting) and monitoring NOx degradation. UR - https://ria.ua.pt/handle/10773/20214 Y1 - 2014 PB - ROYAL SOC CHEMISTRY