A MOF-derived porous In₂O₃ flower-like hierarchical architecture sensor: near room-temperature preparation and fast trimethylamine sensing performance

Abstract

We have successfully prepared metal-organic-frameworks (MOFs) derived In2O3 flower-like hierarchical architectures by a near room-temperature template-free strategy and subsequent accurate annealing process. The In2O3 flower-like hierarchical architecture sensor exhibits good...

High-Performance Trimethylamine Sensor Based on an Imine Covalent Organic Framework

“…These redistribution regions are often referred to as space charge regions, which determine the frequency of electron transfer. According to Morrison's gas-sensing model, 11 adsorbed oxygen molecules capture a large number of electrons from the TB-COF crystals, generating chemisorbed oxygen ions, which result in the formation of an electron depletion layer (Figure 7a). An increase in the thickness of the depletion layer leads to an increase in the height of the potential barrier, resulting in a decrease in the carrier concentration and conductivity.…”

“…Adsorption and desorption were controlled within a cycle time of 17 s. As a result, most current sensing materials for TMA detection consist of metal oxides. Most research has been conducted at high temperatures. ,− However, very few studies have been conducted at room temperature (RT), − which limits their use to only a few applications for portable and RT gas sensors. New sensing materials are being sought to develop highly sensitive semiconductor gas sensors at RT for fast, reliable, nondestructive, and real-time detection of TMA.…”

Halogen-engineered metal–organic frameworks enable high-performance electrochemical glucose sensing

“…Electrochemical sensing offers an effective solution to detect biorelevant molecules, 5 owing to its rapid response, 6 operational convenience 7 and eco-friendly nature. 8 Natural enzymes afford ideal biosensors, which are inherently characterized by high sensitivity and selectivity through precise guest recognition.…”