UV-A light-induced photodegradation of Acid Blue 113 in the presence of Sm-doped ZnO nanostructures

Thangaraj Pandiyarajan, Ramalinga Viswanathan Mangalaraja, Balasubramanian Karthikeyan, Panneerselvam Sathishkumar, Héctor D. Mansilla, David Contreras, José Ruiz

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

13 Citas (Scopus)

Resumen

In this report, optical and photocatalytic degradation of Acid Blue 113 (AB 113) has been investigated in an aqueous heterogeneous media containing pure and Sm-doped ZnO nanostructures which were prepared by a simple wet chemical route. X-ray diffraction measurement confirmed that the prepared nanostructures were in hexagonal wurtzite structure and the dopant Sm ion was incorporated into the Zn lattice. Interesting morphological changes involving a nanosheet-star-spherical transition were observed upon Sm doping and annealing, which were identified through transmission electron microscope. Optical absorption measurements showed an exciton absorption band and a band gap narrowing with respect to the Sm concentrations. The photodegradation of Acid Blue 113 under UV-A radiation by using pure and Sm-doped ZnO nanostructures showed that samarium played an important role in the significant improvement of the photodegradation efficiency and the optimum amount of Sm ion was found to be 1 mmol %. Further, the possible degradation mechanism was proposed herein.

Idioma originalInglés
Páginas (desde-hasta)487-495
Número de páginas9
PublicaciónApplied Physics A: Materials Science and Processing
Volumen119
N.º2
DOI
EstadoPublicada - 30 may. 2015
Publicado de forma externa

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