Electro chemical and photo catalytic studies of MnO2 nanoparticle from waste dry cell batteries
https://doi.org/10.17586/2220-8054-2016-7-4-657-661
Abstract
The objective of the existing research was essentially focused on recovery of MnO2 nanoparticles from consumed dry cells by employing adapted hydrometallurgical process. Experimental tests for the recovery of MnO2 present in the dry cell batteries have been carried out by an acidic reductive leachant, namely oxalic acid. The elemental compositions of the recovered metals from dry cells were confirmed by Energy Dispersive X-ray analysis (EDAX). Surface morphology of the recovered metals was examined using Scanning Electron Microscopy (SEM). Phase composition of the recovered metals from dry cell batteries were confirmed from X-ray Diffract meter (XRD). Cyclic Voltammetry (CV) studies were carried out to clarify the reversibility of the reactions. The obtained MnO2 catalyst was applied for the degradation of different non-volatile dye compounds such as Indigo carmine (IC) and Rhodamine B (RB). The performance of MnO2 shows fast degradation of dyes of high concentration.
About the Authors
M. Mylarappa
AMC Engineering College;
Tumkur University
India
India
Research Centre, Department of Chemistry, AMC Engineering College; Department of Studies and Research in Chemistry, Tumkur University
Bengaluru-560083, Karnataka;
Tumkur-572103, Karnataka
V. Venkata Lakshmi
AMC Engineering College
India
India
Research Centre, Department of Chemistry
Bengaluru-560083, Karnataka
K. R. Vishnu Mahesh
Dayananda Sagar College of Engineering
India
India
Bengaluru-560083, KarnatakaDepartment of Chemistry
H. P. Nagaswarupa
East West Institute of Technology
India
India
Research Centre, Department of Science
Bengaluru-560091, Karnataka
S. C. Prashantha
East West Institute of Technology
India
India
Research Centre, Department of Science
Bengaluru-560091, Karnataka
D. M. K. Siddeswara
East West Institute of Technology
India
India
Research Centre, Department of Science
Bengaluru-560091, Karnataka
N. Raghavendra
RV College of Engineering
Russian Federation
Russian Federation
CMRTU
Bengaluru-560059, Karnataka
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Review
For citations:
Mylarappa M., Venkata Lakshmi V., Vishnu Mahesh K.R., Nagaswarupa H.P., Prashantha S.C., Siddeswara D.M., Raghavendra N. Electro chemical and photo catalytic studies of MnO2 nanoparticle from waste dry cell batteries. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(4):657-661. https://doi.org/10.17586/2220-8054-2016-7-4-657-661
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