MXene-based electrochemical devices applied for healthcare applications

Abstract

The initial part of the review provides an extensive overview about MXenes as novel and exciting 2D nanomaterials describing their basic physico-chemical features, methods of their synthesis, and possible interfacial modifications and techniques, which could be applied to the characterization of MXenes. Unique physico-chemical parameters of MXenes make them attractive for many practical applications, which are shortly discussed. Use of MXenes for healthcare applications is a hot scientific discipline which is discussed in detail. The article focuses on determination of low molecular weight analytes (metabolites), high molecular weight analytes (DNA/RNA and proteins), or even cells, exosomes, and viruses detected using electrochemical sensors and biosensors. Separate chapters are provided to show the potential of MXene-based devices for determination of cancer biomarkers and as wearable sensors and biosensors for monitoring of a wide range of human activities. Graphical Abstract

The dawn of MXene duo: revolutionizing perovskite solar cells with MXenes through computational and experimental methods

“…29 Group A elements (A), transition metals (M), and carbon or nitrogen (X) combine to form ternary compounds known as MAX phases, which have a layered structure similar to graphene. 30 Strong acids or other techniques are often used to selectively etch the A layers from MAX phase precursors, leaving behind layers of transition metal carbides or nitrides divided by functionalized carbon or nitrogen layers to form MXenes. 31 The elements in the M, A and X site of the MAX phase are shown in Fig.…”

Structure, Properties, and Preparation of MXene and the Application of Its Composites in Supercapacitors

“…MXenes have excellent conductivity, with a metallic conductivity of up to ~24,000 S cm −1 . The structure of MXene contains many transition metal elements, for example, titanium and molybdenum, which usually have high conductivity, forming conductive channels in the MXene structure and promoting electron transmission [44][45][46], thereby improving the overall conductivity of MXene [47][48][49]. MXene is a 2D material with a large specific surface area, which means higher electron accessibility.…”

Recent Progress in Wearable Near-Sensor and In-Sensor Intelligent Perception Systems

“…Filling a flexible medium layer with functional filler and depositing a film of functional materials on a flexible substrate are the two main methods of flexible material preparation. Carbon-based materials such as graphene, fullerene, C-nanotubes and carbon quantum dots have been more popular in recent research due to their excellent compatibility with elastic materials [45][46][47][48]. Additionally, metal powders or nanowires such as Cu, Au, Ag and Pt can be selected as functional fillers to confer electrical, magnetic or thermal properties to the functional medium layer.…”