作者: Daewoong Jung , Maeum Han , Gil S. Lee
DOI: 10.1016/J.SNB.2014.08.020
关键词: Nanoparticle 、 Cobalt oxide 、 Hydrogen sensor 、 Chemical engineering 、 Annealing (metallurgy) 、 Carbon nanotube 、 Hydrogen 、 Chemisorption 、 Materials science 、 Cobalt
摘要: Abstract Hydrogen gas (H 2 ) sensors are fabricated using a carbon-nanotube (CNT) sheet decorated with cobalt oxide (Co 3 O 4 nanoparticles. The proposed hybrid sensor is by electrodepositing Co on CNT sheets. With an annealing treatment, the CNTs/Co composite exhibit much higher response to H at room temperature than that have not undergone treatment. functional groups and oxygen defects formed during serve as chemisorption sites for temperature. Moreover, treatment results in strong interaction between CNTs, which allows carriers easily diffuse from nanoparticles CNTs.