Journal
MATERIALS LETTERS
Volume 309, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.131349
Keywords
Zinc oxide; Morphology control; Nanomaterial; Solution plasma
Funding
- Japan Science and Technology Corporation-Strategic International Collaborative Research Program [JPMJSC18H1]
- Japan Science and Technology Corporation-Open Innovation Platform with Enterprises, Research Institute, and Academia [JPMJOP1843]
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In this study, the morphology of ZnO nanostructures was controlled using solution plasma process without chemical additives, resulting in the synthesis of nanorod and nanosheet-type ZnO with Zn and W electrodes, respectively. The unique reaction between ions and radicals at the plasma/liquid interface was responsible for the fabrication of ZnO nanostructures, with Zn(OH)(4)(2-) ions promoting rod structure and WO42- ions inhibiting growth in the [001] direction to form sheet structure.
The morphology of ZnO nanostructures was controlled by the type of electrodes used, without chemical additives in the solution plasma process. Nanorod and nanosheet-type ZnO were synthesized using Zn and W electrodes, respectively. In the solution plasma process, the ZnO nanostructure can be fabricated because of the unique reaction between ions and radicals at the plasma/liquid interface. During this reaction, ions generated from the metal electrode influence the morphology of ZnO by adsorption on the (001) facet. Zn(OH)(4)(2-) ions promoted crystal growth in the [001] direction, resulting in a rod structure. In contrast, the sheet structure was formed owing to the inhibition of growth in the [001] direction by WO42- ions.
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