Two dimensional atomically thin MoS₂nanosheets and their sensing applications

Abstract

The extraordinary properties of layered graphene and its successful applications in electronics, sensors, and energy devices have inspired and renewed interest in other two-dimensional (2D) layered materials. Particularly, a semiconducting analogue of graphene, molybdenum disulfide (MoS2), has attracted huge attention in the last few years. With efforts in exfoliation and synthetic techniques, atomically thin films of MoS2 (single- and few-layer) have been recently prepared and characterized. 2D MoS2 nanosheets have properties that are distinct and complementary to those of graphene, making it more appealing for various applications. Unlike graphene with an indirect bandgap, the direct bandgap of single-layer MoS2 results in better semiconductor behavior as well as photoluminescence, suggesting its great suitability for electronic and optoelectronic applications. Compared to their applications in energy storage and optoelectronic devices, the use of MoS2 nanosheets as a sensing platform, especially for biosensing, is still largely unexplored. Here, we present a review of the preparation of 2D atomically thin MoS2 nanosheets, with an emphasis on their use in various sensing applications.

A study on the interaction between molybdenum disulfide and rhodamine B by spectroscopic methods

“…It finds great application in flexible electronics due to its high stiffness and breaking strength [9]. MoS 2 has been successfully employed in energy harvesting, optoelectronics, lithium batteries, and sensing [10][11][12]. According to recent research, MoS 2 -based fluorescence biosensing systems exhibit better sensitivity than graphenebased methods [13][14][15].…”

Water-penetration-assisted mechanical transfer of large-scale molybdenum disulfide onto arbitrary substrates

“…Single layer molybdenum disulfide (MoS 2 ) is one of the most widely investigated 2D materials, and possesses outstanding properties with applications in band gap engineering, optical and electrical devices, and spin-orbit research. 1,2 It has been reported that large-area and uniform single layer MoS 2 can be synthesized by performing chemical vapor deposition (CVD) on various substrates with atomically smooth surfaces such as SiO 2 on Si, sapphire, and mica. 3 However, the full exploitation of the potential of CVD MoS 2 requires a method for the clean transfer of the as-grown MoS 2 from the growth substrate to the target substrate without degeneration of its properties.…”

Resistive Switching in All-Printed, Flexible and Hybrid MoS2-PVA Nanocomposite based Memristive Device Fabricated by Reverse Offset

“…These methods include micromechanical exfoliation, hydrothermal process, solution-based chemical exfoliation, chemical vaporization, ion intercalation exfoliation, and sulfurization of molybdenum (Mo)89101112. Exfoliated MoS 2 semiconductor has shown remarkable electrical properties and mechanical strength in various micro electronic device applications such as lasers13, supercapacitors14, thin film transistors (TFTs)15, phototransistors16, bio sensors17, solar cells18, and batteries19.…”