• G. Valli
• M. Vijaykarthick
• K. Priya
• S. Sharmila
• I. Nandhini

Nanocrystals of bare and copper doped zinc oxide (Cu/Ag-ZnO) were synthesized by precipitation-decompostion method. Crystalline phases and optical absorption of photo catalyst were determined by Power X-ray diffraction and UV-visible spectrophotometer. The FESEM morphology showed hexagonal wurtzite shape as conformed ZnO Nps. Power X-ray analyses reveals that Cu/Ag doped ZnO crystallizes in hexagonal wurtzite structure. The incorporation of dopant ions in the place of Zn2+ provoked an increase in the size of nanocrystals as compared to undoped or bare ZnO Nps. Optical spectra indicates red shift in the absorption band edge upon Cu/Ag doping ZnO Nps. The band gap decreases from 3.2 eV to 2.92 eV with Cu/Ag doping with ZnO Nps. The photocatalytic activities of the Cu/Ag-ZnO Nps investigated by degradation of methylene blue under LEDs illuminations. The photo-degradation study was find out main reactive species responsible for the degradation of MB dyes.

Cu and Ag doped ZnO, Methylene blue.

"SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC ACTIVITY OF Cu/Ag DOPED ZnO NANOPARTICLES USING LEDs ILLUMINATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.237-241, April-2019, Available :http://www.jetir.org/papers/JETIR1904234.pdf

"SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC ACTIVITY OF Cu/Ag DOPED ZnO NANOPARTICLES USING LEDs ILLUMINATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp237-241, April-2019, Available at : http://www.jetir.org/papers/JETIR1904234.pdf