TY - JOUR
T1 - Three-dimensional flake-flower Co/Sn oxide composite and its excellent ethanol sensing properties
AU - Wang, Qingji
AU - Li, Xu
AU - Liu, Fangmeng
AU - Sun, Yanfeng
AU - Wang, Chen
AU - Li, Xiaowei
AU - Sun, Peng
AU - Lin, Jun
AU - Lu, Geyu
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - In this work, we report a dramatic enhancement in ethanol sensing characteristics of Co-Sn oxides composites with 3D hierarchical architectures, which have been successfully synthesized via an environment friendly one-step hydrothermal approach. The response (resistance ratio) of cobalt oxide and tin oxide composites to 100 ppm ethanol (C2H5OH) was 201 at 200 °C, representing a significant improvement in comparison to tin oxide 3D hierarchical architectures (7.5, correspondingly). The high response of detection of ethanol can be attributed to the change of charge carrier concentration and the variation of oxygen adsorption due to the formation of abundant heterojunction barriers as well as the tuned catalytic activity of Co components, which induce dissociation of ethanol molecule. The unique nanostructure also played an important role in detecting ethanol gas, due to its contribution in facilitating the transport rate and augmenting the adsorption quantity of the target gas molecules.
AB - In this work, we report a dramatic enhancement in ethanol sensing characteristics of Co-Sn oxides composites with 3D hierarchical architectures, which have been successfully synthesized via an environment friendly one-step hydrothermal approach. The response (resistance ratio) of cobalt oxide and tin oxide composites to 100 ppm ethanol (C2H5OH) was 201 at 200 °C, representing a significant improvement in comparison to tin oxide 3D hierarchical architectures (7.5, correspondingly). The high response of detection of ethanol can be attributed to the change of charge carrier concentration and the variation of oxygen adsorption due to the formation of abundant heterojunction barriers as well as the tuned catalytic activity of Co components, which induce dissociation of ethanol molecule. The unique nanostructure also played an important role in detecting ethanol gas, due to its contribution in facilitating the transport rate and augmenting the adsorption quantity of the target gas molecules.
KW - 3D hierarchical architectures
KW - Co-Sn oxides composites
KW - Ethanol
KW - Gas sensor
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000374329300003
UR - https://openalex.org/W2266181793
U2 - 10.1016/j.snb.2016.01.147
DO - 10.1016/j.snb.2016.01.147
M3 - Journal Article
SN - 0925-4005
VL - 230
SP - 17
EP - 24
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -