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Start Over Author "H X, Mai" Journal the journal of physical chemistry c
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1. Single CeO2 Nanowire Gas Sensor Supported with Pt Nanocrystals: Gas Sensitivity, Surface Bond States, and Chemical Mechanism

Author

Jie-Wei Li, Chaoyi Yan, Quan Yuan, Zexiang Shen, Chang Liu, H. B. Lu, H. X. Mai, Lei Liao, and Ting Yu

Subjects
Surface (mathematics), Surface science, General Energy, Nanocrystal, Photoemission spectroscopy, Electron energy loss spectroscopy, Nanogenerator, Nanowire, Nanotechnology, Physical and Theoretical Chemistry, Nanodevice, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

We present a new type of CeO2 nanodevice in which a single CeO2 nanowire was used as the sensing unit. It was found that incorporation of Pt nanocrystals on CeO2 nanowire could significantly increase the sensor response. A possible mechanism was discussed based on the study of morphology and surface bond states of the nanowire using local electron energy loss spectroscopy and X-ray photoemission spectroscopy. The results provide a pathway to improve the performance of gas sensors with a good understanding of the nanowire’s surface physics and chemistry.

Published
2008
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