Publication:
Hydrothermal Growth Zinc Oxide Nanorods for pH Sensor Application
Hydrothermal Growth Zinc Oxide Nanorods for pH Sensor Application
Date
2023-10-01
Authors
Foo Kai Loong
Tan Soo Jin
Heah Cheng Yong
Subash Chandra Bose Gopinath
Liew Yun Ming
Uda Hashim
Voon Chun Hong
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Abstract
The aim of this work is to apply synthesized zinc oxide (ZnO) Nanorods using hydrothermal (HTL) growth technique for pH sensor application. The highly crystallite of ZnO Nanorods was obtained by anneal the growth ZnO Nanorods in furnace at 200 °C for 2 hours. Besides that, XRD analysis shows the produced ZnO Nanorods belonged to the (002) plane. Furthermore, Scanning Electron Microscope (SEM) images confirm that the ZnO Nanorods with hexagonal-faceted structural were successfully produced by HTL growth technique. In addition, Ultraviolet–visible (UV-Vis) spectrophotometer analysis shows that the synthesized ZnO belongs to the wide band gap semiconductor material. The growing ZnO Nanorods were then subjected to electrical measurement with various pH levels. The outcome demonstrates that the current rises as the solution changes from acidic to alkaline. Overall, our study shows a relationship between the electrical as well as the structural characteristics of ZnO Nanorods at various pH levels.
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Keywords
hydrothermal growth | Interdigitated Electrodes | pH sensor | Zinc Oxide Nanorods