posted on 2024-02-12, 12:37authored bySeyedeh
Motahareh Hosseini, Aylar Imanpour, Mona Rezavand, Amir Mohammad Arjmandi Tash, Simone Antonini, Seyed Javad Rezvani, Yaser Abdi
There are two standard methods for
gas detection that
have been
developed in recent years. Utilizing metal oxide semiconductors for
the chemisorption of gas and monitoring the conductivity change are
among the most widely used approaches for gas sensing. Another alternative
method is an electrochemical sensing platform. Considering the pros
and cons of these two types of gas sensors, it seems that the better
approach is to find a way to benefit from both the advantages of the
materials and electrochemical technique. Due to their unique properties,
two-dimensional (2D) borophene sheets are promising materials for
utilizing in the fabrication of the next generation of electronic
devices. Utilizing borophene sheets in the fabrication of gas sensors
opens a new world of gas sensor design and technology. This work reports
fabrication of a borophene-based electrochemoresistance (ECR) sensor
benefiting both chemoresistance performance and the advantages of
electrochemical sensors. A sensor with a new design is introduced
here based on the high electrochemical activity of borophene and its
unique electrical properties. Not only the electrical conductivity
of borophene but also the electrochemical activity of borophene changes
when exposed to gas agents. The use of this exceptional capability
of borophene opens up a pathway to develop a new type of gas sensor.
The sensitivity of the ECR sensor was compared in this work, and the
results show 10 and 4 times more sensitivity for the ECR sensor than
the conventional electrochemical and chemoresistance sensors, respectively.