ISSN (print) 0914-4935
ISSN (online) 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Effect of Deposition Parameters of Hydrothermal Method on Synthesise of ZnO-based Nanowires

Ya-Fen Wei, Wen-Yaw Chung, Cheng-Fu Yang, Wei-Fan Hsu and Chih-Cheng Chen

(Received May 5, 2019; Accepted September 4, 2019)

Keywords: hydrothermal method, concentration, Zn(NO3)2•6H2O, ZnO-based nanowires, growth time

ZnO-based nanomaterials can be used as sensors for different applications, including gas and ultraviolet (UV) sensors. To grow ZnO nanowires by the hydrothermal method, the seed ZnO layer was prepared by a sputter method to deposit ZnO films on SiO2/Si substrates of about 200 nm thickness. Next, Zn(NO3)2•6H2O and C6H12N4 were used as reagents, and DI water with was used as a solvent, and they were mixed to the designed compositions. We found that when Zn(NO3)2•6H2O and C6H12N4 were used as reagents to grow ZnO nanostructured materials, growth temperature, concentration of the diluted solution, growth time, and position of the substrates were four important factors affecting the synthesis results. The surface morphologies of ZnO nanowires were observed by field-emission scanning electron microscopy (FESEM), and crystalline phases were analyzed using X-ray diffraction (XRD) patterns. The FESEM images and XRD patterns were used to determine the effects of synthesis parameters on the morphologies and crystalline properties of the grown nanostructured materials. At the first, we had found that 100oC was the optimum synthesis temperature to grow the pure ZnO nanowires, because the ZnO-based nanowires could be successfully synthesized under different concentrations of Zn(NO3)2•6H2O and C6H12N4 and different synthesis times. The effects of growth time, position of the substrates on the carry sheet glass, and concentrations of Zn(NO3)2•6H2O and C6H12N4 were also investigated to determine their effects on the growth nanostructured materials.

Corresponding author: Cheng-Fu Yang and Chih-Cheng Chen




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