Photo-catalytic activity of Zn1-x Mn x S nanocrystals synthesized by wet chemical technique
1 Nanomaterials Research Laboratory (NRL), Department of Applied Sciences, Chitkara University, Rajpura, Punjab 140 401, India
2 Department of Physics, Punjabi University, Patiala, Punjab 147 002, India
Nanoscale Research Letters 2011, 6:438 doi:10.1186/1556-276X-6-438Published: 24 June 2011
Polyvinyl pyrrolidone capped Zn1-xMnxS (0 ≤ x ≤ 0.1) nanocrystals have been synthesized using wet chemical co-precipitation method. Crystallographic and morphological characterization of the synthesized materials have been done using X-ray diffraction and transmission electron microscope. Crystallographic studies show the zinc blende crystals having average crystallite size approx. 3 nm, which is almost similar to the average particle size calculated from electron micrographs. Atomic absorption spectrometer has been used for qualitative and quantitative analysis of synthesized nanomaterials. Photo-catalytic activity has been studied using methylene blue dye as a test contaminant. Energy resolved luminescence spectra have been recorded for the detailed description of radiative and non-radiative recombination mechanisms. Photo-catalytic activity dependence on dopant concentration and luminescence quantum yield has been studied in detail.