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

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)487-495
Number of pages9
JournalApplied Physics A: Materials Science and Processing
Volume119
Issue number2
DOIs
StatePublished - 30 May 2015
Externally publishedYes

Fingerprint

Dive into the research topics of 'UV-A light-induced photodegradation of Acid Blue 113 in the presence of Sm-doped ZnO nanostructures'. Together they form a unique fingerprint.

Cite this