Fabricating and characterising ZnO-ZnS-Ag2S ternary nanostructures with efficient solar-light photocatalytic activity
authors Zamiri, R; Ahangar, HA; Tobaldi, DM; Rebelo, A; Seabra, MP; Shabani, M; Ferreira, JMF
nationality International
journal PHYSICAL CHEMISTRY CHEMICAL PHYSICS
keywords ZNO-ZNS NANOCABLES; OPTICAL-PROPERTIES; HOLLOW SPHERES; THIN-FILMS; CORE-SHELL; NANOPARTICLES; NANOCRYSTALS; COMPOSITES; REMOVAL; DIOXIDE
abstract 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.
publisher ROYAL SOC CHEMISTRY
issn 1463-9076
year published 2014
volume 16
issue 40
beginning page 22418
ending page 22425
digital object identifier (doi) 10.1039/c4cp02945c
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000343072800054
link 25226166
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