Abstract
This article discusses the main uses of 1D and 2D nanomaterials in the development of conductometric gas sensors based on metal oxides. It is shown that, along with the advantages of these materials, which can improve the parameters of gas sensors, there are a number of disadvantages that significantly limit their use in the development of devices designed for the sensor market.
Highlights
Features of the Fabrication of Gas Sensors Based on Individual 1D Structures As follows from previous discussions, most processes used to synthesize a one-dimensional structAursefaorleloiwncsofmropmatipbrleevwioituhs tdhiesceulescstiroincasl, cmhoarsat cpteroriczeastsieosn uosfeidndtiovisdyunatlhnesainzoesatruocnteu-rdeism
The most famous 2D nanomaterials are graphene [8,323], black phosphorus or phosphorene [324], silicene, borophene, boron nitride [325], and transition metal dichalcogenides (TMDs) [326], which have a layered structure and allow the formation of atomically thin 2D nanomaterials of a large area. 2D materials are characterized by a high degree of anisotropy and chemical functionality
The materials that were considered in this article do not provide a significant improvement in the parameters of gas sensors
Summary
The use of 2D nanomaterials is another promising area in the development of gas sensors. 2D nanomaterials are objects that in one direction have a size in the range of up to 100 nm. 2D materials are characterized by a high degree of anisotropy and chemical functionality All these nanomaterials differ in their mechanical, chemical, electrophysical, surface properties, as well as in size, shape, biocompatibility, and stability to the influence of external factors. Their low-dimension nanostructure gives them some common characteristics. The thinness of these nanomaterials allows them to respond rapidly to external signals such as light or chemical and biological agents This characteristic makes these materials invaluable for applications requiring high levels of surface interactions on a small scale. An experiment showed that these properties make 2D nanomaterials suitable for a wide range of applications, such as drug delivery, energy conversion and storage, electronics, optoelectronics, biosensing, various biomedical applications, and design of chemical sensors, including gas sensors, etc. [327,328,329,330,331,332,333]
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