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Author Cuong, Nguyen Duc ♦ Khieu, Dinh Quang ♦ Hoa, Tran Thai ♦ Quang, Duong Tuan ♦ Viet, Pham Hung ♦ Lam, Tran Dai ♦ Hoa, Nguyen Duc ♦ Hieu, Nguyen Van
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NANOSCIENCE AND NANOTECHNOLOGY ♦ ABUNDANCE ♦ ADSORPTION ♦ CARBON MONOXIDE ♦ ELECTRON DIFFRACTION ♦ GASES ♦ HYDROTHERMAL SYNTHESIS ♦ IRON OXIDES ♦ IRON-ALPHA ♦ ISOTHERMS ♦ NANOPARTICLES ♦ NITROGEN ♦ PERFORMANCE ♦ RESOLUTION ♦ SCANNING ELECTRON MICROSCOPY ♦ SENSORS ♦ TRANSMISSION ELECTRON MICROSCOPY ♦ X-RAY DIFFRACTION
Abstract Highlights: • We have demonstrated a facile method to prepare Fe{sub 2}O{sub 3} nanoparticles. • The gas sensing properties of α-Fe{sub 2}O{sub 3} have been invested. • The results show potential application of α-Fe{sub 2}O{sub 3} NPs for CO sensors in environmental monitoring. - Abstract: Iron oxide nanoparticles (NPs) were prepared via a simple hydrothermal method for high performance CO gas sensor. The synthesized α-Fe{sub 2}O{sub 3} NPs were characterized by X-ray diffraction, nitrogen adsorption/desorption isotherm, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED). The SEM, TEM results revealed that obtained α-Fe{sub 2}O{sub 3} particles had a peanut-like geometry with hemispherical ends. The response of the α-Fe{sub 2}O{sub 3} NPs based sensor to carbon monoxide (CO) and various concentrations of other gases were measured at different temperatures. It found that the sensor based on the peanut-like α-Fe{sub 2}O{sub 3} NPs exhibited high response, fast response–recovery, and good selectivity to CO at 300 °C. The experimental results clearly demonstrated the potential application of α-Fe{sub 2}O{sub 3} NPs as a good sensing material in the fabrication of CO sensor.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-08-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 68


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