title: A facile chemical route for recovery of high quality zinc oxide nanoparticles from spent alkaline batteries.
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 5M HCl for reaction with a phosphine oxide reagent Cyanex 923® at 250°C for 30min. The desired ZnO nanoparticles were restored from the Zn-Cyanex 923 complex through an ethanolic precipitation step. The recovered particle product with about 5nm diameter exhibited fluorescent properties (emission peak at 400nm) when excited by UV radiation (excitation energy of 300nm). Thus, the proposed technique offered a simple and efficient route for recovering high purity ZnO nanoparticles from spent alkaline batteries.
authors: Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh 160030, India.
authors: Akash
authors: A
authors: Deep
authors: Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh 160030, India. Electronic address: amit_csio@rediffmail.com.
authors: Amit L
authors: AL
authors: Sharma
authors: Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh 160030, India.
authors: Girish C
authors: GC
authors: Mohanta
authors: Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh 160030, India.
authors: Parveen
authors: P
authors: Kumar
authors: Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
authors: Ki-Hyun
authors: KH
authors: Kim
mesh_terms: D011211:Electric Power Supplies; D004566:Electrodes; D059029:Electronic Waste / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis; D053768:Metal Nanoparticles / Q000032:analysis*; D059027:Recycling / Q000379:methods*; D018505:Waste Management / Q000379:methods*; D015034:Zinc Oxide / Q000032:analysis*
chemical_list: D004785:Environmental Pollutants; D015034:Zinc Oxide
keywords: Functional; Nanoparticles; Recycling; Spent batteries; ZnO