Chemical Sensors Based on Two-Dimensional (2D) Materials for Selective Detection of Ions and Molecules in Liquid

Abstract

Up until now, two-dimensional (2D) materials have been researched vigorously for application to sensing ions and molecules in liquid due to their unique structural, chemical, and electronic properties. Features of 2D materials such as high surface area-to-volume ratios and various reaction sites are ideal characteristics for fabricating state-of-the-art high-performed chemical sensors. This review particularly focuses on the detection of pH, metal ions, and biomolecules in liquid media. The final goal of the ion/molecule sensors is a development of the electronic tongue or taste sensors that can be used in medical, food, biotechnology, and health applications. Herein, we introduce recent advances in the field of ion/molecule sensors in liquid media based on 2D materials, especially concentrating in graphene and MoS2, and will emphasize the opportunities and challenges of these unique sensing materials and devices.

Antimicrobial Nanostructured Coatings: A Gas Phase Deposition and Magnetron Sputtering Perspective

“…Nanostructured materials (NMs) [1][2][3][4][5] represent an active area of research and a techno-economic sector in continuous expansion in many application domains, as shown by the more than 1400 review papers describing NMs applications that have appeared in the last three years. The technological importance of NMs is due to their tunable physicochemical characteristics, such as optical absorption [6][7][8], electrical conductivity [9,10], photothermal characteristics [11], optical [12,13] and photoacoustic sensing [14,15], surface enhanced Raman scattering effects [16,17], chemical state [18], and bactericidal functionalities [19][20][21]. In particular, the latter research sector has been driven by the interest in understanding the interactions and effects of nanoparticles (NPs) on living organisms [20][21][22][23][24][25][26][27], with prominent attention towards the wet synthesis of NMs and NPs and the study of their effect on cells and bacteria in solution.…”

Benchmarking monolayer MoS2 and WS2 field-effect transistors

“…Recently, a microprocessor based on MoS 2 FETs was reported 13 . Additionally, 2D FETs have found applications in various emerging technologies such as sensors for internet of things, neuromorphic computing, biomimetic devices, valleytronics, straintronics, and optoelectronic devices [14][15][16][17][18][19][20][21] . While initial demonstrations of prototype devices relied on exfoliated flakes, the 2D community has rapidly transitioned towards the growth of large-area films to address manufacturing needs for any commercial applications.…”

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

“…Since its discovery, graphene has been used in a wide variety of applications, ranging from sensors [ 139 ], batteries [ 140 ], electro-Fenton [ 141 ] to electronics [ 142 ]. It has also been recognised as an adsorbent material, as it possesses a large surface area and there is considerable evidence to show that π-π interactions occur between the aromatic rings of various organic pollutants and the basal planes of graphene [ 143 ].…”