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- W4382397706 abstract "We propose a method to synthesize ZnO nanoparticles. A layer of well-aligned zinc oxide (ZnO) nanoneedles was synthesized on zinc plate at room temperature using an environmentally friendly zinc-air cell system (ZACs). The zinc plate was the anode, and the air cathode was composed of steel wool. A porous void-paper separated the electrodes and in the presence of a low concentration NaOH electrolyte also formed the medium of transferring electrons from the anode to the cathode. In this study, the open-circuit voltage, Voc, were monitored as a function of the electrolyte concentration. The electrolyte concentrations used were 0.4M, 0.5M, 0.6M, 1M and 2M. The measured values of Voc were approximately 1.2V for all the five different concentrations used. The electrolyte concentration of 0.5M gave the highest Voc, while 2M gave the lowest Voc. The effect of concentration in orientation and length growth of the synthesized ZnO nano-needles was also studied through scanning-electron microscopy (SEM) and x-ray diffraction (XRD). It was found that the growth and orientation of ZnO nano-needles is highly dependent on the electrolyte concentration. The SEM images show good length properties of nano-needles with average sizes between 780nm and 2200nm. XRD confirms that the synthesized nano-needles are ZnO with particle sizes between 19 and 39 nm for electrolyte concentrations of 0.6M, 1M, and 2M. Crystalline forms of ZnO were observed for concentrations higher than 0.5M, but at and below 0.5M amorphous forms were observed." @default.
- W4382397706 created "2023-06-29" @default.
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- W4382397706 date "2014-12-01" @default.
- W4382397706 modified "2023-10-17" @default.
- W4382397706 title "Synthesis of ZnO Nanoparticles Using a Zinc-Air Cell and Investigation of the Effect of Electrolyte Concentration" @default.
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- W4382397706 doi "https://doi.org/10.1016/s1452-3981(23)11023-6" @default.
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