Fabrication of ultra-sensitive piperidine chemical sensor with a direct grown well-aligned ZnO nanorods on FTO substrate as a working electrode
- Authors
- Khan, Rizwan; Periyayya, Uthirakumar; Kim, Gyu Cheol; Lee, In-Hwan
- Issue Date
- 11월-2019
- Publisher
- ELSEVIER
- Keywords
- ZnO nanorods; Ultra-sensitivity; Solution method; Piperidine; Chemical sensor
- Citation
- SOLID STATE SCIENCES, v.97
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOLID STATE SCIENCES
- Volume
- 97
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/62041
- DOI
- 10.1016/j.solidstatesciences.2019.105986
- ISSN
- 1293-2558
- Abstract
- In this work, we report a direct growth of well-aligned zinc oxide nanorods (ZNRs) on fluorine doped tin oxide (FTO) substrate by a single step chemical method in an aqueous solution; the synthesized ZNRs were then used for piperidine sensing studies, as a working electrode. The ZNRs were uniformly grown in a large area, highly crystalline, and vertically aligned with an average length and diameter of similar to 650 nm and similar to 50 nm, respectively. The vertically aligned ZNRs provide the higher surface area for electrocatalytic activity of piperidine, and thus exhibited an ultra-sensitivity of 527 mu AmM(-1)cm(-2), a low detection limit (similar to 60 nM), and a wide linear detection range from 0.1 mu M to 200 mu M. The improved piperidine sensing response characteristics of direct grown ZNRs on FTO substrate due to the large surface area, higher electrocatalytic activity and the fast electron transfer process, which makes them interesting candidate for fabricating other chemical sensing devices.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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