Abstract Non‐contact humidity sensors have been widely explored as human–computer interaction for the internet of things and artificial intelligence. However, except existing sensing mechanisms, such resistive, capacitive, functional groups gradient based device, little attention has paid to exploiting new mechanisms with novel properties which can meet requirements miniaturization integration. Here, a self‐powered potentiometric humidity‐transduction mechanism, modulates measured potential...

Flexible pressure sensors have aroused extensive attention in health monitoring, human–computer interaction, soft robotics, and more, as a staple member of wearable electronics. However, majority traditional research focuses solely on foundational mechanical sensing tests ordinary human-motion ignoring its other applications daily life. In this work, paper-based sensor is prepared by using MXene/bacterial cellulose film with three-dimensional isolation layer structure, capability sound...

Abstract Accurate and continuous pressure signal detection without external power supply is a key technology to realize the miniaturization of wearable electronic equipment, internet things, artificial intelligence. However, it difficult be achieved by using current sensor technologies. Here, new one‐body strategy, i.e., zinc‐ion battery (ZIB‐P) technology, which designs rechargeable solid‐state ZIB itself as flexible reported. In device, an isolation layer introduced into sandwich...

Abstract The transfer functions of the widely used pressure sensors do not exhibit desired linearity, which limits their practicability in many fields, such as Internet Things and artificial intelligence. Herein, MXene/cellulose nanofiber composite membrane‐based linear nanofluidic are demonstrated. nanoscale gaps between MXene laminates restrict movement electrolyte realize selective transport ions, based on mechanical signals can be converted into electric energy for self‐powering. In...

Biological ion channels exhibit strong gating effects due to their zero-current closed states. However, the capabilities of artificial nanochannels have typically fallen short biological channels, primarily owing larger nanopores that fail completely block transport in off-states. Here, we demonstrate solid-state hydrogen-bonded organic frameworks-based membranes achieve high-performance ambient humidity-controlled proton gating, accomplished by switching pathway instead relying on...

2D metal carbides and nitrides (MXene) are promising candidates for electromagnetic (EM) shielding, saturable absorption, thermal therapy, photocatalysis owing to their excellent EM absorption. The plasmon resonances in metallic MXene micro/nanostructures may play an important role enhancing the absorption; however, contribution has not been determined due lack of a precise understanding its behavior. Here, use high-spatial-resolution electron energy-loss spectroscopy measure dispersion...

According to the need of sustainable development, solid catalysts are critical materials for green biodiesel production. In this study, a hydrothermal method was used develop reusable and highly active Fe-BTC UiO-66 metal-organic framework encapsulated Zr-doped polyoxometalate nano-hybrid (ZrSiW/Fe-BTC ZrSiW/UiO-66) acid-catalyzed esterification oleic acid with methanol. The structural compositional characterization synthesized were characterized using various techniques such as Fourier...

Abstract Great efforts have been made to build multifunctional flexible pressure sensing devices enable future wearable electronics. However, a green‐safe, cost‐effective, self‐powered integrated system remains challenging. Herein, an all‐solid‐state rGM (rGO/GO/PVA nanofibers/MXene) is designed and developed based on mechanical potentiometric transduction (MPT) mechanism, which converts stimulation into the change in ion transport channel encodes it measured potential difference between two...

Battery-sensing-based all-in-one pressure sensors are generally successfully constructed by mimicking the information transfer of living organisms and sensing behavior human skin, possessing features such as low energy consumption detection low/high-frequency mechanical signals. To design high-performance sensors, a deeper understanding intrinsic mechanisms is required. Here, mechanical-electrical conversion mechanism based on pressure-modulated nanoconfined channels proposed. Then, ion...

Abstract Flexible humidity sensors have received more and attention in people's lives, the problems of gas permeability power supply issues device long been areas need improvement. In this work, inspired by high air daily wear clothing galvanic batteries, a self‐powered sensor with fast response is designed. A nylon fabric/GO net (as sensitive layer solid electrolyte) obtained spraying technique. This structure enables to response/recovery (0.78 s/0.93 s, calculated at 90% final value),...

Flexible wearable pressure sensors can maintain their sensing capability when any deformation occurs, which possess ponderance in the realms of electronic skin, man–machine interaction, medical diagnosis, and human motion detection. Two-dimensional (2D) layered-structured materials early transition metal carbides carbonitrides, named MXenes, own fascinating character due to mechanical flexibility, good conductivity, excellent hydrophilic property, large specific surface areas, unique...

A novel solid acid nanocatalyst (Ag1(NH4)2PW12O40/UiO-66) comprising ammonium and silver co-doped H3PW12O40 zirconium-based metal–organic frameworks (UiO-66) was synthesized characterized by Fourier transform infrared spectroscopy, N2 adsorption/desorption, X-ray diffraction, scanning electron microscopy, transmission thermogravimetric analysis, ammonia temperature-programmed desorption. The catalytic activity evaluated for the synthesis of biodiesel via esterification lauric methanol....

Humidity sensors are vital for ambient monitoring, but existing focus on moisture absorption, overlooking the indispensable role of ion channels in water-electricity conversion process. Here, an ultra-miniaturized fiber humidity (MFH) sensor based near-parallel pathways is presented. The well-designed nanochannels significantly facilitate transport due to stable charge distribution and confined ions migration within nanostructure, which improves efficiency moisture-sensitive fibers....

In the present study, metal-organic framework Cu-BTC supported Sn (II)-substituted Keggin heteropoly nanocomposite (Sn1.5PW/Cu-BTC) was successfully prepared by simple impregnation method and applied as a novel nanocatalyst for producing biodiesel from oleic acid (OA) through esterification. The characterized Fourier transform infrared spectrometer (FTIR), wide-angle X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission microscope (TEM), nitrogen adsorption-desorption,...

Abstract Nickel salts of Keggin-type heteropolyacid on Zr(IV)-based metal-organic frameworks (UiO-66) has been synthesized via ion-exchange followed by a facile one-pot hydrothermal method. The catalysts underwent FT-IR, N 2 adsorption-desorption, powder XRD, SEM and TEM analysis. NiHSiW/UiO-66 catalyst was used as new effective solid acid in the catalytic transfer free fatty to biodiesel with an optimum conversion 86.7%. excellent activity nanocatalyst closely related its high specific...

Wearable pressure sensors have received recent attention due to their contributions artificial intelligence, electronic skin, and the Internet of Things. However, this traditional sensor is faced with integration dilemma caused by need for external energy supply devices. Targeting obstacle, here, we report a scheme that improves battery as sensor. Benefiting redox potential conversion mechanism water-retention characteristics calcium ion, can encode signals into electrical signals, thus...

κ-Carrageenan was explored to improve genistein solubility by matrix retention. The corresponding maximum value in the efficiency of retention (Re) (50.48 mg/100 mg) achieved when variables were set as: pH 4.76, temperature 52.12 °C and concentration 0.27 mg/mL. coefficient determination (R2) response surface regression model presented this study 0.9848. evidences from XRD, DSC FT-IR attested amorphous form hydrogel matrix. Importantly, (16.84–34.42 μg/mL) much higher than that its free...

The developed MOF-derived ZrO₂ supported silicotungstic acid nanoporous hybrids is a highly efficient catalyst in esterification.