We successfully synthesized Au-ZnO hybrid nanoparticles with a novel hexagonal pyramid-like structure. The growth process of the as-prepared nanopyramids is clearly discussed. Because their homogeneous composition and controlled morphology, demonstrate better photocatalytic efficiency than pure ZnO nanocrystals.

Abstract Two-dimensional material has been widely investigated for potential applications in sensor and flexible electronics. In this work, a self-powered humidity sensing device based on poly(vinyl alcohol)/Ti 3 C 2 T x (PVA/MXene) nanofibers film monolayer molybdenum diselenide (MoSe ) piezoelectric nanogenerator (PENG) was reported the first time. The MoSe -based PENG fabricated by atmospheric pressure chemical vapor deposition techniques, which can generate peak output of 35 mV power...

This paper demonstrates a sulfur dioxide (SO₂) gas sensor based on transition-metal-doped molybdenum disulfide (MoS₂) nanocomposite synthesized <italic>via</italic> facile single-step hydrothermal route.

This article is the first demonstration of a molybdenum disulfide (MoS2)/tricobalt tetraoxide (Co3O4) nanocomposite film sensor toward NH3 detection. The MoS2/Co3O4 was fabricated on substrate with interdigital electrodes via layer-by-layer self-assembly route. surface morphology, nanostructure, and elemental composition samples were examined by scanning electron microscopy, transmission X-ray diffraction, energy-dispersive spectrometry, photoelectron spectroscopy. characterization results...

The development of high-temperature photodetectors can be beneficial for numerous applications, such as aerospace engineering, military defence and harsh-environments robotics. However, current are characterized by low photoresponsivity (<10 A/W) due to the poor optical sensitivity commonly used heat-resistant materials. Here, we report realization h-BN-encapsulated graphite/WSe2 which endure temperatures up 700 °C in air (1000 vacuum) exhibit unconventional negative photoconductivity (NPC)...

High-temperature-resistant integrated circuits with excellent flexibility, a high integration level (nanoscale transistors), and low power consumption are highly desired in many fields, including aerospace. Compared conventional SiC high-temperature transistors, transistors based on two-dimensional (2D) MoS2 have advantages of superb atomic scale, ultralow consumption. However, cannot survive at temperature drastically degrades above 200 °C. Here, we report field-effect (FETs) top/bottom...

Black phosphorus (BP) is one of the most attractive graphene analogues, and its properties make it a promising nanomaterial for chemical sensing. However, mono- few-layer BP flakes are reported to chemically degrade rapidly upon exposure ambient conditions. Therefore, little known about performance sensing mechanism intrinsic BP, with acceptable air stability remains only theoretically explored. Here, we experimentally demonstrated first air-stable high-performance sensor using ionophore...

A class of formaldehyde (HCHO) gas sensors with a high response were developed based on ordered mesoporous NiO, which synthesized <italic>via</italic> the nanocasting route by directly using silica as hard template.

This paper reports an original fabrication of a benzene gas sensor based on tungsten disulfide nanoflowers (WS2 NFs)/zinc oxide hollow spheres (ZnO HMDs) hierarchical nanoheterostructure. The ZnO/WS2 composite was characterized for the inspection its nanostructure, elementary composition, and surface morphology. benzene-sensing properties nanofilm were exactly investigated. results illustrate that exhibits remarkable sensing performance toward gas, including good sensitivity, rapid...

This letter demonstrated a high-performance ammonia gas sensor based on Pd-decorated MoSe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> nanoflower nanostructure. The hydrothermally prepared Pd-MoSe nanofilm was examined by X-ray diffraction, transmission electron microscopy, photoelectron spectroscopy, and scanning microscopy. sensing performance of the film investigated upon exposure to different concentrations at room temperature...

The extraordinary properties of black phosphorus (BP) make it a promising candidate for next-generation transistor chemical sensors. However, BP films reported so far are supported on substrate, and substrate scattering drastically deteriorates its electrical properties. Consequentially, the potential sensing capability intrinsic is highly underestimated mechanism masked. Additionally, optimum regime remains unexplored. This article first demonstration suspended sensor operated in...

The large piezoelectricity of monolayer MoSe2, which is predicted to be stronger than that all the other group VIB transition-metal dichalcogenides (including MoS2), has only been theoretically investigated. Here, we report experimental evidence in-plane in MoSe2. Monolayer single-crystalline MoSe2 flake derived from chemical vapor deposition demonstrates a peak output voltage 60 mV at 0.6% strain, ∼50% larger MoS2. Piezoelectric signal along armchair orientation ∼6 times zigzag orientation,...

We fabricated depth-type hierarchical CNT/quartz fiber (QF) filters through in situ growth of CNTs upon quartz using a floating catalyst chemical vapor deposition (CVD) method. The filter specific area the CNT/QF is more than 12 times higher that pristine QF filters. As result, penetration sub-micron aerosols for reduced by two orders magnitude, which reaches standard high-efficiency particulate air (HEPA) Simultaneously, due to fluffy brush-like structure on QFs, pore size hybrid only has...

This paper demonstrates three kinds of TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> with hollow ball, nanosphere, and nanoflower nanostructures coated quartz crystal microbalance (QCM) humidity sensors, which were synthesized by metal organic framework (MOF)-derived, hydrothermal solvothermal route. The compositional morphological characteristics characterized means X-ray diffraction, specific surface area analysis, scanning...

SnSe demonstrates a higher piezoelectric output voltage than other 2D materials reported so far. We realized solely 2D-material self-powered sensor unit.