An Operando X-ray Absorption Spectroscopy Study on Sensing Characteristics of Vertically Aligned ZnO Thin Film for Methane Gas Sensors

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Duangmanee, Suriya; Poo-Arporn, Yingyot; Janphuang, Pattanaphong; Leuasoongnoen, Pimchanok; Tonlublao, Surangrat; Kamonpha, Phitsamai; Saengchai, Natawan; Chanlek, Narong; Saisombat, Chatree;Kidkhunthod, Pinit; Poo-Arporn, Rungtiva P.;

ผู้เผยแพร่: MDPI

ปีที่เผยแพร่ (ค.ศ.): 2022

ชื่อย่อของวารสาร: Nanomaterials

Volume number: 12

Issue number: 8

หน้าแรก: 1285

eISSN: 2079-4991

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127708841&doi=10.3390%2fnano12081285&partnerID=40&md5=e49c722bdd3aa84ae722e3595fb7583a

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

In this work, a simple, facile growth approach for a vertically aligned ZnO thin film is fabricated and its application towards methane gas sensors is demonstrated. ZnO thin film was prepared by a combination of hydrothermal and sputtering methods. First, a ZnO seed layer was prepared on the substrate through a sputtering technique, then a ZnO nanorod was fabricated using a hydrothermal method. The surface morphology of the ZnO film was observed by scanning electron microscopy (SEM). A ZnO nanorod coated on the dense seed layer is clearly visible in the SEM image. The average size of the hexagonal-shaped ZnO rod was around 50 nm in diameter, with a thickness of about 1 mm. X-ray absorption near-edge structures (XANES) were recorded to characterize the structural properties of the prepared film. The obtained normalized Zn K-edge XANES of the film showed the characteristic features of ZnO, which agreed well with the standard ZnO sample. The measurement of Zn K-edge XANES was performed simultaneously with the sensing response. The results showed a good correlation between sensor response and ZnO structure under optimal conditions. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

คำสำคัญ

Gas sensor, operando XAS