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Surface Superoxide Complex Defects‐Boosted Ultrasensitive ppb‐Level NO 2 Gas Sensors
Author(s) -
Li Yuxiang,
Zu Baiyi,
Guo Yanan,
Li Kun,
Zeng Haibo,
Dou Xincun
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201503111
Subject(s) - chemiresistor , nanoflower , computer science , nanotechnology , process (computing) , materials science , process engineering , engineering , operating system , nanostructure
Sn 4+ – O 2 −• centers are intentionally created in SnO 2 nanoflowers by a thermodynamically instable synthetic process. The resulting SnO 2 nanoflower‐based sensor is confirmed to be the most sensitive ppb‐level chemiresistor NO 2 sensor to date. The Sn 4+ –O 2 −• centers with strong gas‐adsorbing and high eletron‐donating capability towards NO 2 molecules decisively determine the sensor sensitivity.