Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 28, Pages 28594-28600Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-2850-0
Keywords
Zin-carbon batteries; Recycling; E-waste; ZnO porous nano-sheets; Photodegradation
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This paper describes a clean approach of waste-cleaning waste. Two-dimensional (2D) ZnO porous nano-sheets were synthesized from end-of-life zinc-carbon batteries via a simple homogeneous precipitation-calcination route, and the as-synthesized product was applied as photocatalyst for the purpose of photodegradation of methylene blue/MB aqueous solution under UV-Vis irradiation. Precipitation at ambient temperature resulted in the formation of the crystalline phase of zinc hydroxide nitrate hydrate [Zn-5(OH)(8)(NO3)(2)(H2O)(2)], which was then transformed to ZnO through calcination. FE-SEM studies revealed the resulting ZnO had the morphology of porous nano-sheets with thickness of up to 100nm. The photocatalytic activity tests proved that the batteries-derived ZnO porous nano-sheets can be a promising candidate for photodegradation of organic pollutant in industrial waste water. The results presented here confirm a possibility of utilization waste batteries as a resource of photodegrading MB in wastewater treatment, hereby an opportunity to deliver environmental benefits.
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