期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2021
卷号：12
期号：3
页码：442-454
语种：English
出版社：University of Mohammed Premier Oujda
摘要：The purpose of this study was to produce a low-cost sodium hypochlorite’s solution from manganese dioxide coated on graphite which comes from recycled batteries. Thus, a manganese dioxide electrode was prepared by the sol-gel process and has been used as anode in an electrochemical cell for production of sodium hypochlorite. Graphite were collected from recycled batteries. The colloidal suspension of MnO2 were deposited onto the surface of a graphite by the dip coating technique. The results showed that MnO2 films have been synthesized by the sol-gel process and deposited on graphite substrate. Thus, under the real conditions of operation, the lifetime of this electrode was improved. The main characteristics of sodium hypochlorite produced were: a pH of 11.53, a density of 1.02 g cm-3 and an active chlorine concentration of 18.602 g L-1 either an active chlorine percent of 1.823%. factors that affect the production of sodium hypochlorite solution were studied. The results also show that the optimum conditions for production of NaOCl solution were: a sodium chloride concentration ([NaCl]= 300g.L-1 ), an intensity (I=1A), an inter-electrode spacing (d= 0.5cm), a pH of the solution (pH=10), a temperature (T=20℃) and a time process (t= 60min). In recent research, sodium hypochlorite has attracted considerable attention, mainly due to its high oxidation potential.
关键词：C/MnO2 electrode;Dip coating;Graphite;Sodium hypochlorite;Sol-gel process
