The humidity sensing characteristics of PANI-titania nanotube-rGO ternary nanocomposite

Design and implementation of humidity sensor based on carbon nitride modified with graphene quantum dots

“…More importantly, the curvature of the developed semicircle increases as the humidity increases. The sensing mechanism can be explained based on the Grotthuss chain reaction 41 , 61 , 62 . At low humidity level the adsorbed water molecules are dissociated on the surface of the sensor to form protons (H + ) and hydroxyl groups (OH − ).…”

“…The sensors were evaluated in a wide range of humidity (7% up to 97%) under different testing frequencies from 50 Hz to 100 kHz using LCR meter (Hioki-50). More information regarding the testing condition and sensor fabrication is explained in previous reported articles 5 , 21 , 40 , 41 All humidity sensing experiments were performed at room temperature. The photograph of the prepared sensor (1.3 cm × 2 cm) is represented in Fig.…”

Biosynthesis of MgO Nanoparticles and Their Impact on the Properties of the PVA/Gelatin Nanocomposites for Smart Food Packaging Applications

“…Nevertheless, the use of PVA alone did showcase major disadvantages, particularly when it is used in food packaging films, like poor barrier properties, UV-shielding, and lacking antimicrobial properties. To overcome these issues, the authors in this work used biosynthesized MgO NPs from a Boswellia serrata gum (BSG) aqueous extract. ,,,, …”

Improved NO2 Gas-Sensing Performance of an Organic Field-Effect Transistor Based on Reduced Graphene Oxide-Incorporated Nanoporous Conjugated Polymer Thin Films

“…31,32 Therefore, rGO has been investigated as a component of composite materials for use in sensor applications, typically by incorporating it into inorganic or organic active materials. 33,34 For example, Ding et al fabricated a MoS 2 −rGO−Cu 2 O composite-based NO 2 sensor in which porous Cu 2 O nanostructures are tightly loaded in the MoS 2 −rGO nanosheets using a combination of hydrothermal and soft-templating methods. 35 The ternary sensing material containing 25 wt % MoS 2 −rGO showed an 11-fold higher response (14.9%) to 500 ppb NO 2 compared to pure MoS 2 .…”

“…Carbon materials such as graphene, graphene oxide (GO), reduced graphene oxide (rGO), and carbon nanotubes (CNTs) are of great interest as gas-sensing materials because of their large specific surface area and excellent electrical properties. ,, In particular, rGO has attracted considerable attention because it exhibits outstanding electrical properties and has many oxygen functional groups that can be modified to achieve desired functionality and thus enable the detection of diverse gas analytes. , Notably, oxygen functional groups lead to strong interactions between rGO and gaseous analytes via dipole–dipole interactions and hydrogen bonding. , However, the poor processability of rGO has limited its practical application to gas sensors. , Therefore, rGO has been investigated as a component of composite materials for use in sensor applications, typically by incorporating it into inorganic or organic active materials. , For example, Ding et al fabricated a MoS 2 –rGO–Cu 2 O composite-based NO 2 sensor in which porous Cu 2 O nanostructures are tightly loaded in the MoS 2 –rGO nanosheets using a combination of hydrothermal and soft-templating methods . The ternary sensing material containing 25 wt % MoS 2 –rGO showed an 11-fold higher response (14.9%) to 500 ppb NO 2 compared to pure MoS 2 .…”