What Types of Nanosensors Are Used for VOC Detection?
Several types of nanosensors are used for VOC detection, each with unique properties: - Carbon Nanotubes (CNTs): CNTs have exceptional electrical, thermal, and mechanical properties. When functionalized with specific chemical groups, they can selectively interact with VOC molecules, altering their electrical resistance. - Metal Oxide Nanoparticles: Metal oxides like ZnO, TiO2, and SnO2 are widely used in gas sensors. Their electrical properties change upon interaction with VOCs, enabling detection. - Quantum Dots: These semiconductor nanoparticles exhibit unique optical properties. When exposed to VOCs, their fluorescence can change, providing a measurable signal.
