Humidity sensors based on the composite of multi-walled carbon nanotubes and crosslinked polyelectrolyte with good sensitivity and capability of detecting low humidity

Facile Fabrication of MoS2-Modified SnO2 Hybrid Nanocomposite for Ultrasensitive Humidity Sensing

“…The humidity sensor is of great importance in many fields, including environmental monitoring, industrial production, agricultural planting, aviation, and medical and chemical monitoring. , Until now, various transduction techniques were used to develop humidity sensors, such as resistance, capacitance, impedance, optical fiber, and surface acoustic wave (SAW) . Moreover, plenty of nanomaterials such as metal oxides, , graphene, carbon nanotubes, and nanohybrids , have been employed to fabricate humidity-sensing devices. Remarkably, as one of the most important typical n-type metal oxide semiconductors, SnO 2 was used as a suitable humidity sensing nanomaterial due to its excellent electrochemical stability but suffered from an obvious drawback of low conductivity, long response/recovery time, narrow measuring range, and difficulty in integration .…”

Hierarchical Self-Assembled SnS2 Nanoflower/Zn2SnO4 Hollow Sphere Nanohybrid for Humidity-Sensing Applications

“…So far, lots of nanomaterials have been widely used to prepare humidity-sensing devices for various applications because of its excellent structural performance due to metal oxides, polymer, graphene, and carbon nanotubes. − However, the semimetallic nature of graphene has impeded its use in the applications of nanoelectronics and optoelectronic devices . As transition metal dichalcogenides, SnS 2 with different morphologies of nanosheets, nanoplates, nanorods, and nanoparticles has been used in many applications.…”

Effect of Humidity on Electrical Conductivity of Pristine and Nanoparticle-Loaded Hydrogel Nanomembranes

“…Among nanostructured materials, monoclinic VO 2 nanostructures 3 and VS 2 ultrathin nanosheets 4 can be mentioned, showing particularly high sensitivity at a relative humidity (RH) above 50%. 4 As representative organic/ inorganic hybrid systems, tin oxide nanoparticle (NP) loaded cellulose, 5 Li-loaded nanoporous polymers, 6 multilayer graphene oxide/polyelectrolyte nanocomposite films, 7 multiwalled carbon nanotubes dispersed in cross-linked polyelectrolyte, 8 and LiCl−polymer composite nanofibers 9 can be listed, showing quite promising performance at high humidity 5,7 but also in the entire RH range. 7−9 Among organic materials used in humidity-responsive hybrid assemblies, hydrogels are in particular attractive because of their intrinsic ability to absorb moisture, affecting their mechanical, optical, and electrical properties.…”