Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure–Property‐Application Relationship for Gas Sensors

Abstract

Along with the progress of nanoscience and nanotechnology, nanomaterials with attractive structural and functional properties have gained more attention than ever before, especially in the field of electronic sensors. In recent years, the gas sensing devices have made great achievement and also created wide application prospects, which leads to a new wave of research for designing advanced sensing materials. There is no doubt that the characteristics are highly governed by the sensitive layers. For this reason, important advances for the outstanding, novel sensing materials with different dimensional structures including 0D, 1D, 2D, and 3D are reported and summarized systematically. The sensing materials cover noble metals, metal oxide semiconductors, carbon nanomaterials, metal dichalcogenides, g‐C3N4, MXenes, and complex composites. Discussion is also extended to the relation between sensing performances and their structure, electronic properties, and surface chemistry. In addition, some gas sensing related applications are also highlighted, including environment monitoring, breath analysis, food quality and safety, and flexible wearable electronics, from current situation and the facing challenges to the future research perspectives.

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

“…Metal oxide semiconductors/g-C 3 N 4 composites are widely used as gas sensors [555]. As a result, the g-C 3 N 4 loaded with metal oxides has also revealed new types of sensors to detect different kinds of materials [556]. General schematic description in Figure 20, shows different types of g-C 3 N 4 -metal oxide sensors.…”

The Progress of Research into Flexible Sensors in the Field of Smart Wearables

“…Two-dimensional nanomaterials have many unique physical properties, high mechanical flexibility, a large specific surface area, and good electrical conductivity, making two-dimensional nanomaterials a good choice as conductive sensitive materials for piezoresistive sensors. Two-dimensional nanomaterials can be widely used in flexible sensors by adjusting their structure, lamellar thickness, and surface modification [ 164 ]. These include TMDs and MXene.…”

Research Progress on Coating of Sensitive Materials for Micro-Hotplate Gas Sensor

“…Gas sensors play an essential role in modern life, and the demand for gas sensors is increasing day by day [ 1 ]. Traditional gas detection relies on chromatography spectroscopy [ 2 ].…”