Effect of Ni doping on structural, optical and photocatalytic properties of Zn1-XNiXO nanoparticles prepared by different pH conditions

N Sriharan,R Jeyachitr,T S Senthil,V Senthilnathan

doi:10.24297/jac.v12i6.5524

Abstract

Zn1-XNiXO (x = 0.00, 0.02, 0.04 & 0.06 mol %) nanoparticles were prepared by simple co-precipitation method. The influences of Ni doping on structure, morphology, optical and photocatalytic properties were investigated by means of Xray diffraction, scanning electron microscopy, UV–Vis spectrophotometer and photochemical reaction method. The obtained result shows that the prepared ZnO nanocrystals were hexagonal wurtzite structure and the average crystallite size decreases with increase of Ni doping. The increase of visible light absorption and increase of band gap were found with the increase of Ni doping concentration, which enable the sample harvest more photons to excite the electron from valence band. The photocatalytic properties of Ni doped ZnO nanocrystals shows enhanced activity that the pure ZnO nanocrystals. The photocatalytic activities were not significantly affected by the particle size and 0.04% Ni doped ZnO nanocrystals shows best catalytic activity than the other catalysts.

Highlights

Α,β-Unsaturated ketones are versatile and convenient intermediates for the synthesis of a wide variety of heterocyclic compounds
In the present work we report the synthesis of several thiazolopyrimidine derivatives based on ethyl 2benzylidene-7-methyl-3-oxo-5-phenyl-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate (2) [11], which was prepared from ethyl 2-mercaprto-4-methyl-6-phenyl-1,6-dihydropyrimidine-5-carboxylate (1) [12], as starting material
Annulation of compound 2 with an uracil moiety fused to C2-C3 of the pyridine ring was achieved, through alkylation of 6-amino-1,3-dimethyluracil with thiazolopyrimidine 2

Summary

INTRODUCTION

Α,β-Unsaturated ketones are versatile and convenient intermediates for the synthesis of a wide variety of heterocyclic compounds. The α,β-enone moiety of the molecule is a favorable unit for dipolar cycloaddition with numerous reagents providing heterocyclic compounds of different ring sizes with one or several heteroatoms. Dihydropyrimidinones 1 (DHPMs, Biginelli compounds) appear to be a class of privileged organic compounds with medicinal significance due to their different biological and therapeutic activities [6] In view of these reports and in continuation of our work on biologically active nitrogen and sulfur heterocycles [7,8,9,10], we have synthesized some new pyrimidine derivatives and tested their antitumor activity

RESULTS AND DISCUSSION

EXPERIMENTAL PROCEDURE

CONCLUSIONS