In situ fabrication of a NiO nanoparticles/single-layered MXene nanosheet Schottky heterojunction toward sensing xylene and formaldehyde

Abstract

A NiO nanoparticle decorated single layered MXene nanosheet based gas sensor shows excellent dual selectivity for detecting xylene and formaldehyde.

Multiarray Gas Sensors Using Ternary Combined Ti3C2Tx MXene-Based Nanocomposites

“…However, the (0 0 2) peaks of Ti 3 C 2 T x in the XRD patterns of Ti-WO 3 /Ti 3 C 2 T x and Pd-SnO 2 /Ti 3 C 2 T x were not significant, indicating a decrease in the crystallinity of Ti 3 C 2 T x . This phenomenon can be attributed to the lower proportion of Ti 3 C 2 T x in the composition of the nanocomposites compared to the amount of metal oxide. , …”

“…This phenomenon can be attributed to the lower proportion of Ti 3 C 2 T x in the composition of the nanocomposites compared to the amount of metal oxide. 41,42 To evaluate the gas response, gas sensors were fabricated using the conventional thermal vapor deposition method. The multiarray gas sensors fabricated based on as-synthesized Ti-WO 3 /Ti 3 C 2 T x and Pd-SnO 2 /Ti 3 C 2 T x showed an increase in current compared to the devices using Ti-WO 3 or Pd-SnO 2 only, which is attributed to the superior conductivity of Ti 3 C 2 T x .…”

Rational design of NiO/Ti3C2Tx nanocomposites with enhanced triethylamine sensing performance

“…Thereby, at the interface of Ti 3 C 2 T x and NiO, a potential barrier is constructed. 42,43 The formed potential barrier hinders the transport process of electrons through nanostructures, and thus, extra electrons are available and more adsorbed oxygen is formed on the surface of NiO/Ti 3 C 2 T x , which enhances the response of the sensor. 44…”

Hydrogel/MOF Dual-Modified Photoelectrochemical Biosensor for Antibiofouling and Biocompatible Dopamine Detection

“…Metal–organic framework (MOF), a novel porous crystalline material constructed through coordination bonds between organic ligands and inorganic metals, boasts several unique advantages. − These include ample surface area, high porosity, robust adsorption capabilities, and structural stability. , In recent years, research on sensors based on MOFs has rapidly expanded. − Compared to traditional materials used in EC biosensors (such as graphene oxides or transition metal oxides), − MOF-based biosensors consistently exhibit exceptionally high sensitivity and ultralow detection limits. − Consequently, constructing PEC biosensors on MOF substrates holds immense potential. Furthermore, due to the high porosity of MOFs, they find extensive application in separation and water purification studies. , Inspired by this, modifying electrodes with MOFs and leveraging their porous structures to selectively filter out large biomolecules during biosensing represents a rational approach to achieving anticontamination effects.…”