Open AccessKinetics and Photodegradation Study of Congo Red using Mg with Ti/Al Co-Doped ZnO Nanocomposite under UV Light
Author(s) -
N. Sabari Arul,
T. Senthilnathan
Publication year - 2019
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22383
Subject(s) - photodegradation , congo red , nanocomposite , aqueous solution , chemistry , dopant , kinetics , nuclear chemistry , doping , photocatalysis , materials science , catalysis , nanotechnology , organic chemistry , adsorption , physics , optoelectronics , quantum mechanics
ZnO nanocomposites co-doped with dopants like Mg with Ti or Al were prepared and assigned as ZnO-A and ZnO-B. All the nanocomposites were characterized by XRD, SEM and EDX and its utility towards the photodegradation of Congo red is studied. The present study was carried out in 30 W mercury lamp fitted in batch photoreactor and the effect of decomposition was measured in UV-absorption. Nanocomposite with combination of Ti dopant (ZnO-A) exhibited effective degrading ability to aqueous Congo red solution. A solution of 100 ppm of above concentrated ZnO nanocompositesolution was reduced nearly to 5ppm within 5 h. The photodegradation kinetics revealed that the photodegradation of aqueous Congo red follows first order reaction and showed quite comparable degradation effeciency with earlier reports.