Optical studies of capped CdSe nanoparticles and their photocatalytic activity for degradation of methylene blue dyeSeyed Mohammad Taheri Otaqsara, Ebrhim Nemati-Kande and Ramin BarzegarEur. Phys. J. Appl. Phys., 62 1 (2013) 10404DOI: https://doi.org/10.1051/epjap/2013120311