Ultra-sensitive benzene detection by a novel approach: Core-shell nanowires combined with the Pd-functionalization

作者：Kim Jae Hun; Kim Hyoun Woo; Kim Sang Sub

来源：Sensors and Actuators B: Chemical , 2017, 239: 578-585.

DOI：10.1016/j.snb.2016.08.071

• SnO2-ZnO
• Core-shell nanowire
• Pd-Functionalization
• Benzene (C-6 H-6)
• Gas sensor

We have realized an excellent selective sensing to benzene (C6H6) by means of using SnO2-ZnO core shell nanowires functionalized with Pd nanoparticles. We obtained a response of 71 for 100 ppb of C6H6, which is the highest response reported thus far. The synergistic effects of variation of SnO2/ZnO potential barriers and chemical sensitization of Pd are responsible for the highest C6H6-sensing performance. These results highlight the potential for using Pd functionalized nanowires as a sensing platform in detecting trace concentrations of benzene, which is applicable in the future sensor, including the disease diagnosis and the environmental monitoring.

• 出版日期2017-2