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Room‐Temperature Gas Sensing Based on Electron Transfer between Discrete Tin Oxide Nanocrystals and Multiwalled Carbon Nanotubes
Author(s) -
Lu Ganhua,
Ocola Leonidas E.,
Chen Junhong
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200803536
Subject(s) - materials science , nanocrystal , carbon nanotube , tin oxide , nanostructure , electron transfer , oxide , nanotechnology , chemical engineering , carbon fibers , composite material , photochemistry , composite number , chemistry , engineering , metallurgy
A new gas‐sensing platform for low‐concentration gases (NO 2 , H 2 , and CO) comprises discrete SnO 2 nanocrystals uniformly distributed on the surface of multiwalled carbon nanotubes (CNTs). The resulting hybrid nanostructures are highly sensitive, even at room temperature, because their gas sensing abilities rely on electron transfer between the nanocrystals and the CNTs.