|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Functional Nanomaterials: Functional Low-Dimensional (0D, 1D, 2D) Materials 2022
||NOW ON-DEMAND ONLY – H-8: Hydrothermal Synthesis of ZnO Nanorod Arrays for Gas Sensing
||P. Kojo Amoah, Jordan Shields , Helmut Baumgart, Y.S. Obeng , Abdelmageed A. Elmustafa
|On-Site Speaker (Planned)
||Abdelmageed A. Elmustafa
Obtaining controllable growth of ordered single crystal nanorods for specific device applications, such as in gas sensors and detectors represents a significant challenge. Among all the available numerous methods, hydrothermal growth of ZnO nanorod arrays is the most energy-efficient and economical, environmentally friendly fabrication technique that does not require a complex vacuum system. In this work, we report on hydrothermal growth of well-aligned ZnO nanorod arrays perpendicularly oriented on substrates. ZnO seed layers were prepared on Si by atomic layer deposition (ALD). In the ALD process, Dimethyl zinc and water were used as precursors of ZnO seed layer. The growth temperature of ZnO layer was 150oC. The ZnO nanorods arrays were achieved from a fine grain ZnO seed layer by means of heating an aqueous solution of zinc nitrate hexahydrate and hexamethylenetetramine in a water bath at low temperature in the range of 65 - 90°C.