The current status of time-resolved XAS beamline at SLRI and application on in situ experiments

Limphirat, Wanwisa; Wiriya, Narinthorn; Tonlublao, Surangrat; Chaichoy, Sarunyu; Pruekthaisong, Piyawat; Duandmanee, Suriya; Kamonpha, Phitsamai; Kaewsuwan, Dechmongkhon; Meethong, Nonglak; Poo-arporn, Rungtiva P.; Songsiriritthigul, Prayoon; Hormes, J.; Poo‐arporn, Yingyot

doi:10.1016/j.radphyschem.2020.108750

Cited by 10 publications

(1 citation statement)

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“…The in situ XAS was further performed to study the influence of CH 4 and temperature on the ZnO film. The prepared film was cut into a circular shape with an outer diameter of 5 mm and then inserted into the test reactor [19]. The Zn K-edge XANES were collected during thermal treatment under 5% v/v CH 4 /N 2 at 400 • C with a heating rate of 5 • C/min.…”

Section: Sensor Characterizationmentioning

confidence: 99%

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

et al. 2022

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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.

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Section: Sensor Characterizationmentioning

confidence: 99%