Biotemplate synthesis of a CoO microtube sensor for fast triethylamine detection.

A low operating temperature and short response/recovery time are essential factors for sensors. Hence, it is necessary to create a sensor that can quickly detect target gas at a relatively low temperature. In this work, CoO microtube based sensors were fabricated by a bio-template method using absorbent cotton.

Highly sensitive detection of HS gas at low temperature based on ZnCoO microtube sensors.

It is extremely necessary to detect Hydrogen sulfide (HS) due to the hazardous nature. Thus, it is required to design a material which can detect HS gas at low temperature. In this work, ZnCoO microtubes are prepared by using absorbent cotton as template, combining immersion method in metal salt solution (Zn:Co=1:2) with calcination treatment in air.