Humidity sensing properties of MoO3-NiO nanocomposite materials

Nanobelt-assembled nest-like MoO3 hierarchical structure: Hydrothermal synthesis and gas-sensing properties

“…Assembly of 1D structures as building blocks into hierarchical structures has been realized with the assistance of cationic surfactant CTAB [13,17,18]. It is proposed that CTAB seemingly act as an adhesive to gather the building units together, which is consistent with our results.…”

“…As a wide-gap n-type semiconductor, α-MoO 3 has received much attention in the field of gas sensor [12][13][14], because of its anisotropic layered crystalline structure formed by stacking bilayer sheets of MoO 6 octahedra with the help of van der Waals forces along the [010] direction [15,16], which leads to the formation of nanoblets. However, although individual nanobelt possesses higher aspect ratio, the inevitable serious-stacking configuration may weaken the reaction efficiency of 1D nanostructures based gas-sensing materials [17,18].…”

Development of High Sensitivity Humidity Sensor Based on Gray TiO2/SrTiO3 Composite

“…The composites composed of different materials usually combine advantages of the components with better properties. For example, In 2 O 3 -NiO, ZnO-In 2 O 3 and MoO 3 -NiO composites all exhibited enhanced humidity sensitive characteristics [5,15,16]. The strengthened moisture properties may be attributed to the improved specific surface area and more active sites in composite.…”

“…The strengthened moisture properties may be attributed to the improved specific surface area and more active sites in composite. A large surface area-to-volume ratio means that a significant fraction of the atoms or molecules are surface atoms that can participate in surface reactions [15,16]. …”

Flexible Smart Noncontact Control Systems with Ultrasensitive Humidity Sensors

“…In addition, the sensor also has fast response (<0.4 s) and recovery (<2 s) over the full RH range (0–100%) (Figure S3, Supporting Information). Different types of humidity sensors have been compared in Table S2 (Supporting Information), showing that our sensors have much surpassed the reported humidity sensors in terms of the sensitivity, speed, and detection range . In addition, we compared the state‐of‐the‐art commercial humidity sensors (such as Sensirion SHT35, Humidlcon HIH7000, TE HM1500LF) with our work in terms of detection range, sensitivity, accuracy tolerance, flexibility, transparency, and noncontact control applications.…”