Chemical Sensors Based on Graphene and 2D Graphene Analogs

Abstract

Abstract The outbreak of the global pandemic has aroused significant attention from the public for healthy living environments. From this point of view, chemical sensors are crucial since these devices or actuators have diverse applications, such as environmental monitoring, food safety, industry, and healthcare. The development of chemical sensors may substitute human senses and precisely identify unspecified substances or discriminate materials accurately. For the implementation of chemical sensors utilized in daily life, there are requirements such as portability, low cost, low power consumption, high selectivity, and sensitivity. The most adequate materials are 2D materials that exactly agree with the described conditions. 2D materials have been studied for sensor applications owing to their unique material characteristics specialized for detecting particular substances. High surface to volume ratio or numerous reaction sites are representative physical properties of 2D materials. Furthermore, high carrier mobility is a typical feature of these substances appropriate for manufacturing advanced chemical sensors. Herein, the history and recent advances of 2D material‐based chemical sensors along with a description of perspectives and future challenges are introduced. This review provides a guideline for preparing chemical sensors based on 2D materials as next‐generation sensing devices.

Keywords

• 2D materials
• chemical sensors
• graphene
• MXenes
• transition metal dichalcogenides