PL EN
Modified Graphite with Tin Oxide as a Promising Electrode for Reduction of Organic Pollutants from Wastewater by Sonoelectrochemical Oxidation
 
More details
Hide details
1
Department of Chemical Engineering, College of Engineering, University of Baghdad, Baghdad,10071, Iraq
 
 
Corresponding author
Hind Jabbar Nsaif   

Department of Chemical Engineering, College of Engineering, University of Baghdad, Baghdad,10071, Iraq
 
 
Ecol. Eng. Environ. Technol. 2024; 1:307-320
 
KEYWORDS
TOPICS
ABSTRACT
Most of the researches on tin oxide coatings as electrode materials were done on titanium, in this ‎study, the aim was to create pure SnO2 films on graphite substrate, which is more prevalent than ‎titanium. There is a lack in investigation the effect of SnCl2 and HNO3 concentrations on the prepared ‎SnO2 electrode; therefore, the aim of this work is to study these effects precisely. Also, no previous ‎study investigated the removal of phenol sonoelectrochemically by SnO2 electrode, which would be ‎accomplished in the present work. The tin dioxide electrode was produced by cathodic electrodeposition ‎using an SnCl2.2H2O solution in the presence of HNO3 and NaNO3 on a graphite plate substrate. The ‎impact of various operating parameters (current density (CD), HNO3 concentration, and SnCl2.2H2O ‎concentration) on the morphology and structure of the SnO2 deposit layer was thoroughly investigated. ‎The physical structures of the SnO2 film were determined by X ray diffraction (XRD), surface ‎morphology was characterized using field-emission scanning electron microscopy (SEM), and chemical ‎composition was analyzed using energy-dispersive X-ray spectroscopy (EDX). In a batch reactor, the ‎sonoelectrochemical oxidation of phenol was tested to determine the performance of the best SnO2 ‎electrodes for phenol degradation and any organic byproducts. It was discovered that 10 mA/cm2, 50 ‎mM of SnCL2.2H2O, and 250 mM of HNO3 were the optimum conditions to prepare SnO2 electrodes, ‎which produced the smallest crystal size, with no appeared cracks, and gave the best phenol removal. ‎The best prepared electrode was tested in the sonoelectrochemical oxidation of phenol with two ‎different electrolytes and different CD, and the results showed that the phenol removal was 76.87% and ‎‎64.68% when using NaCl and Na2SO4, respectively, and was 63.39, 76.87, and 100% for CD at 10, 25, ‎and 40 mA/cm2, respectively.‎
Journals System - logo
Scroll to top