Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6353685 | Waste Management | 2016 | 6 Pages |
Abstract
Recycling of spent domestic batteries has gained a great environmental significance. In the present research, we propose a new and simple technique for the recovery of high-purity zinc oxide nanoparticles from the electrode waste of spent alkaline Zn-MnO2 batteries. The electrode material was collected by the manual dismantling and mixed with 5 M HCl for reaction with a phosphine oxide reagent Cyanex 923® at 250 °C for 30 min. The desired ZnO nanoparticles were restored from the Zn-Cyanex 923 complex through an ethanolic precipitation step. The recovered particle product with about 5 nm diameter exhibited fluorescent properties (emission peak at 400 nm) when excited by UV radiation (excitation energy of 300 nm). Thus, the proposed technique offered a simple and efficient route for recovering high purity ZnO nanoparticles from spent alkaline batteries.
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Authors
Akash Deep, Amit L. Sharma, Girish C. Mohanta, Parveen Kumar, Ki-Hyun Kim,