NDLI: Microwave Intercalation Synthesis of WO$_{3}$ Nanoplates and Their NO-Sensing Properties

Content Provider	Springer Nature Link
Author	Tu, Yue Li, Qiang Jiang, Danyu Wang, Qi Feng, Tao
Copyright Year	2014
Abstract	Tungsten(VI) oxide (WO$_{3}$) nanoplates were successfully synthesized by microwave intercalation. Through microwave processing, an intermediate product H$_{2}$W$_{2}$O$_{7}$·xH$_{2}$O was prepared quickly to greatly decrease the time used to prepare WO$_{3}$ nanoplates. The crystal structure and morphology of WO$_{3}$ were characterized by x-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM, and selected-area electron diffraction. The morphology of WO$_{3}$ changed with an increase in calcining temperature. A mixed-potential NO$_{ x }$ sensor using planar yttria-stabilized zirconia and WO$_{3}$ as the sensing electrode (SE) was fabricated, and its performance in NO$_{ x }$ detection at high temperature was examined. It was determined that at 500 °C, the sensor with the WO$_{3}$-nanoplate SE had higher sensitivity to NO than the sensor with a SE consisting of WO$_{3}$ microparticles. The response of the NO sensor with a WO$_{3}$-nanoplate SE was linear with the logarithm of NO concentration in the range of 100-1000 ppm. The electrochemical impedance measurements indicate that the electrode reaction that occurred at the triple-phase boundary (TPB) of the sensor with WO$_{3}$-nanoplate SE was stronger than the reaction that occurred at the TPB of the sensor with WO$_{3}$-microparticle sensing electrode.
Starting Page	274
Ending Page	279
Page Count	6
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	24
Issue Number	1
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2014-10-10
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	microwave intercalation mixed-potential NO$_{ x }$ sensor WO$_{3}$ nanoplates yttria-stabilized zirconia Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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