Pure and Mg-doped self-assembled ZnO nano-particles for the enhanced photocatalytic degradation of 4-chlorophenol.
A novel self-assembled pure and Mg doped ZnO nano-particles (NPs) were successfully synthesized by a simple low temperature co-precipitation method. The prepared photocatalysts were characterized by X-ray diffraction, high resolution scanning electron microscopy, high resolution transmission electron microscopy, diffuse reflectance spectroscopy and photoluminescence (PL) spectroscopy. The results indicated that the prepared photocatalysts showed high crystallinity with a uniform size distribution of the NPs. The degradation of cholorphenols is highly mandatory in today's scenario as they are affecting the environment adversely. Thus, the photocatalytic degradation of 4-chlorophenol (4-CP), a potent endocrine disrupting chemical in aqueous medium was investigated by both pure and Mg-doped ZnO NPs under UV-light irradiation in the present study. The influence of the Mg content on the structure, morphology, PL character and photocatalytic activity of ZnO NPs were investigated systematically. Furthermore,the effect of different parameters such as 4-CP concentration, photocatalyst amount, pH and UV-light wavelength on the resulting photocatalytic activity was investigated.
Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 600034, India.
N Clament Sagaya
NC
Selvam
Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 600034, India.
S
S
Narayanan
Materials Division, School of Advanced Sciences, Vellore Institute of Technology University, Chennai Campus, Chennai 600127, India.
L John
LJ
Kennedy
Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 600034, India.
J Judith
JJ
Vijaya
D002384:Catalysis; D002733:Chlorophenols / Q000737:chemistry*; D007700:Kinetics; D008274:Magnesium / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D015394:Molecular Structure; D055668:Photochemical Processes; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification; D015034:Zinc Oxide / Q000737:chemistry*
D002733:Chlorophenols; D014874:Water Pollutants, Chemical; C029107:4-chlorophenol; D008274:Magnesium; D015034:Zinc Oxide