Platinum Nanoparticle-Decorated ZnO Nanorods Improved the Performance of Methanol Gas Sensor. Issue 14 (5th November 2020)

• Record Type: Journal Article
• Authors: Young, Sheng-Joue; Chu, Yen-Lin
• Is Part Of: Journal of the Electrochemical Society. Volume 167:Issue 14(2020)
• Publication Date: 2020-11-05
• Subjects: Nanoscale materials -- Sensors -- ZnO -- hydrothermal method; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/abc4be
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : In this study, the crystallinities, structures, and optical properties of zinc oxide (ZnO) and platinum nanoparticles (Pt NPs)-decorated ZnO nanorods (Pt/ZnO NRs) were investigated by an X-ray diffraction, a field-emission scanning electron microscopy, and a photoluminescence spectrometry. The Pt NPs-decorated ZnO NRs were prepared by direct current (DC) magnetron sputtering for 0 and 30 s. The ZnO and Pt/ZnO NR-based gas sensors are consistent, stable, and repeatable. The sensitivities of the ZnO and Pt/ZnO NR sensors were 1.34% and 121.03%, respectively, at a concentration of 1000 ppm methanol gas and at an operating temperature of 270 °C. The Pt NPs-decorated ZnO NRs exhibit enhanced sensor characteristics of methanol gas.