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