The modification of the material surface by second-phase particles enables electron interaction on Fermi level or energy band between different materials, which can achieve improvement gas-sensing properties. Herein, a novel composite PbS quantum-dots-modified MoS2 (MoS2/PbS) is synthesized combination hydrothermal method with chemical precipitation and fabricated into gas sensor to investigate its enhanced properties caused quantum dots at room temperature. It found that responsivity...

The unique properties of MoS2 nanosheets make them a promising candidate for high-performance room temperature gas detection. Herein, few-layer (FLMN) prepared via mechanical exfoliation are coated on substrate with interdigital electrodes room-temperature NO2 Interestingly, compared other sensors based MoS2, FLMN exhibit high responsivity detection, and is easily desorbed from the sensor surface an ultrafast recovery behavior, times around 2 s. related to fact that adsorbed can affect...

Rational design and convenient preparation of freestanding, hierarchical, porous composites consisting three-dimensional (3D) conductive carbon low-dimension nanostructures with well-defined morphology direct application as electrodes in rechargeable batteries are challenging. Herein, a composite composed bilayered NaxV2O5·nH2O(NVO) nanobelts, nanotubes (CNTs), reduced graphene oxide (rGO) 3D cross-linked structure is prepared by simple one-pot hydrothermal self-assembly vacuum filtration....

Carcinoembryonic antigen (CEA) is a recognized biomarker for lung cancer and can be used early detection. However, the clinical value of CEA not fully realized due to rigorous requirement high-sensitivity wide-range detection methods. Field-effect transistor (FET) biosensors, as one potentially powerful platforms, may detect with significantly higher sensitivity than conventional testing equipment, while their range are far below Here, we construct floating gate FET biosensor based on...

Abstract Flexible aqueous zinc‐ion batteries are attracting increasing interest owing to high theoretical capacity, low cost and safety, however, it is highly challenging design fabricate suitable cathodes with superior Zn 2+ storage as well flexibility. Herein, a free‐standing flexible film composed of carbon nanotubes polypyrrole (PPy)‐coated MnO 2 nanowires prepared via facile in situ reactive self‐assembly following vacuum filtration. The unique hierarchically porous 3D architecture...

The detection of harmful trace gases, such as formaldehyde (HCHO), is a technical challenge in the current gas sensor field. weak electrical signal caused by amounts gases difficult to be detected and susceptible other gases. Based on amplification effect field-effect transistor (FET), carbon-based FET-type with gas-sensing gate proposed for HCHO at ppb level. Semiconducting carbon nanotubes (s-CNTs) catalytic metal are chosen channel materials, respectively, sensor, which makes full use...

Flexible lithium-ion batteries (FLIBs) have rapidly developed as promising energy storage devices for flexible and wearable electronics, owning to the advantages of high density, fast charge–discharge, no memory effect stable cycle performance. Research on electrodes has attracted widespread attention maintain electrochemical function under deformation. Carbon materials are some most popular battery (LIB) anode owing their low cost, conductivity excellent stability. However, scaled-up...

Novel heterostructured MnSe/SnSe@C nanoboxes display excellent electrochemical performance.

Interpretability is fundamental in the precise identification of single-molecule charge transport, and its absence deep learning models currently major barrier to usage such powerful algorithms field. Here, we have pioneered a novel method employing fusion attention-based technologies. Central our approach innovative neural network architecture, SingleFACNN, which integrates convolutional networks with multihead self-attention spatial attention mechanisms. Our findings demonstrate that...

Abstract Sodium dual‐ion batteries (S‐DIBs) are attracting increasing interest in large‐scale electrical energy storage, owing to low‐cost and abundant sodium resources the crucial need develop high‐performance anode materials spur application of S‐DIBs. In this work, hierarchical hollow spheres assembled from interconnected few‐layer MoS 2 nanosheets with an N‐doped carbon coating (designated as @NC HHSs) designed synthesized. An S‐DIBs full cell is fabricated HHSs anode, expanded graphite...

Design and preparation of dual-role anode materials with extraordinary performance for rechargeable Li/Na-ion batteries (LIBs/NIBs) remains highly challenging. Herein, three-dimensional (3D) pomegranate-like porous bimetallic NiCo2Se4 spheres N-doped carbon (termed as [email protected]2Se4) is synthesized by solvothermal method annealing. Microstructure investigations reveal that the protected]2Se4 include nano-sized particles inner core modification thin-walled layer inner/outer shell. The...

Based on lattice dynamics theory and molecular simulations, we have investigated the geometrical structures, phonon dispersion relations, specific heat of silicon nanowires with Stillinger-Weber potential. It was shown that original potential can reproduce well-established four acoustical branches. With calculated spectra, heats nanowires. is found thin are much higher than those bulk silicon. According to partial density states surface atoms, enhancement be attributed effect confinement effect.

Understanding and tuning charge transport in molecular junctions is pivotal for crafting devices with tailored functionalities. Here, we report a novel approach to manipulate the absorption configuration within 4,4′-bipyridine (4,4′-BPY) junction, utilizing scanning tunneling microscope break junction technique concentration-dependent manner. Single-molecule conductance measurements demonstrate that exhibit significant concentration dependence, transition from high (HC) low (LC) states as...

Carbon monoxide (CO) poses significant health risks to humans, impacts the lifespan and efficiency of hydrogen fuel cells as a primary impurity, is also used for early insulation fault diagnosis in equipment. However, portable CO detectors with low detection limits are still lacking. In this work, we demonstrate floating-gate field-effect transistor (FG-FET) gas sensor, which carbon nanotubes (CNTs) tin oxide (SnO2) film separated by Y2O3 layer act channel sensing layer, respectively. Thanks...

Abstract Transition‐metal oxides have attracted much attention as promising anode materials, owing to high theoretical specific capacity for lithium‐ion batteries (LIBs). However, rapid performance degradation derived from poor electrical conductivity and drastic volume changes during the repeated lithium insertion/extraction processes has limited their practical applications. In this work, we design prepare pomegranate‐like microspheres of nano‐sized MnO particles with gaps among them core...

In this work, the photocatalytic CO2 conversion of two-dimensional (2D) SnS2 nanosheets modified by S-defect (SnS2-VS) and carbon interstitial doping (SnS2-Cint) is investigated first-principles calculations. From a thermodynamic point view, SnS2-VS SnS2-Cint show narrower band gaps, suitable edge positions, red-shifted absorption spectrum, stronger light absorption, suggesting better activity. Importantly, Cint can not only improve electrical conductivity but also prolong lifetime...