TITLE:
Hexagonal WO3 Acetone Gas Sensor Modified by Graphene-COOH Functionalized (GCOOH)
AUTHORS:
Yuxuan Guo, Haiming Zhang
KEYWORDS:
WO3, GCOOH, Hydrothermal Method, Acetone, Gas Sensing Characteristic
JOURNAL NAME:
Open Access Library Journal,
Vol.10 No.3,
March
28,
2023
ABSTRACT: GCOOH-WO3 composites mixed with different amounts of Graphene-COOH functionalized (GCOOH) (0, 0.05, 0.1 and 0.2 wt%) were prepared by hydrothermal method at 180°C for 10 h and 24 h. The asprepared WO3 and GCOOH-WO3 composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy and other equipment. The effect of the amount of graphene in the composites on the gas-sensing responses and the gas-sensing selectivity of the materials was investigated. The experimental results revealed that the sensor based on 0.1 wt% GCOOH-WO3 composite exhibited high response and good selectivity to acetone at 260°C.