Co_0.85Se@NC obtained by directly selenizing ZIF-67 can be used as a trifunctional catalyst for water splitting and Zn–air batteries.

Abstract Salmonella bacteria are the major cause for infection of 16 million people worldwide with typhoid fever each year. Antibiotic‐resistant strains have been isolated from various food products. As a result, development ultrasensitive sensing technology detection and new approaches treatment infectious bacterial pathogens that do not rely on traditional therapeutic regimes is very urgent public health, safety, world economy. Driven by this need, we report herein nanotechnology‐driven...

3D assembly of graphene sheets (GSs) is important for preserving the merits single-atomic-layered structure. Simultaneously, vertical growth GSs has long been a challenge thermal chemical vapor deposition (CVD). Here, achieved in CVD reactor and novel structure, fibers (3DGFs), developed. The 3DGFs are prepared by carbonizing electrospun polyacrylonitrile NH3 subsequently situ growing radially oriented using CVD. on densely arranged interconnected with edges fully exposed surface, resulting...

Abstract Olivine‐type LiMnPO 4 (LMP) cathodes have gained enormous attraction for Li‐ion batteries (LIBs), thanks to their large theoretical capacity, high discharge platform, and thermal stability. However, it is still hugely challenging achieve encouraging Li‐storage behaviors owing low electronic conductivity limited lithium diffusion. Herein, the core double‐shell Ti‐doped LMP@NaTi 2 (PO ) 3 @C/3D graphene (TLMP@NTP@C/3D‐G) architecture designed constructed via an in situ synthetic...

Nanometer-sized gold, due to its beautiful and bountiful color unique optical properties, is a versatile material for many industrial societal applications. We have studied the effect of gold nanoparticles on Salmonella typhimurium strain TA 102. The in solution prepared using citrate reduction method found not be toxic or mutagenic but photomutagenic bacteria; however, careful control experiments indicate that photomutagenicity co-existing Au 3+ ions, nanoparticle itself. also bacteria at...

Rechargeable lithium ion batteries (LIBs) have attracted extensive attention globally due to their good cycling stability, high energy density, and rapid-rate capability, while the rational design of electrode materials can significantly improve electrochemical performance. In this work, ultrafine Mo2C nanoparticles (NPs) were successfully encapsulated in one dimensional (1D) N-doped porous carbon nanofibers form a hybrid (Mo2C-NCNFs) through single-nozzle electrospinning approach coupled...

A low-cost and high-efficiency K 2 C 4 O is used as a potassium reservoir source to boost the electrochemical performance of potassium-ion batteries, how this strategy expected promote their practical application.

Noble metal based nanozymes show great potential in replacing natural enzymes; however, their development is greatly restricted by relatively low specificity and activity. Herein, we report the synthesis of a class amorphous/crystalline PtRuTe nanomaterials with Pt/Te-enriched core Ru-enriched shell as efficient peroxidase mimics selectively enhanced peroxidase-like activity suppressed oxidase-like We demonstrate that amorphous domains play critical role tuning optimizing catalytic...

In this paper, carbon fibers with a high specific surface area (SSA) have been prepared from cotton for supercapacitor application.

Abstract Achieving high areal capacity is a challenge for current lithium‐ion batteries (LIBs). To address this issue, nickel foam (NF), as free‐standing skeleton suffers from long‐term poor anchor ability active materials, resulting in detachment conductive substrates. In addition, the weighty NF damages overall energy density of electrode. Herein, an situ fabrication interlayer strategy proposed to effectively these issues through constructing layer‐by‐layer 3D structure composed inner...

As important anodes in lithium-ion batteries, graphene is always faced with the aggregation problem that makes most of active sites lose their function at high current densities, resulting low Li-ion intercalation capacity and poor rate performance. To address this issue, a layered g-C3N4@reduced oxide composite (g-C3N4@RGO) was prepared via scalable easy strategy. The resultant g-C3N4@RGO possesses large interlayer distances, rich N-active sites, microporous structure, which largely...

Activated carbon with dense and parallel arranged macrochannels is prepared from luffa sponge fibers for supercapacitor application.

Variable-coefficient viscous dampers (VVDs) have a variable annular gap, allowing them to dynamically adjust the damping coefficient at different displacement stages and provide higher forces during large phases. This study evaluates seismic performance of steel frame equipped with VVDs. A shaking table test was conducted on two-story, single-span VVDs assess its response, results were compared those same conventional (VD). The experimental demonstrated that significantly reduced structural...

Titanium dioxide nanoparticles (nano-TiO2) are widely used in cosmetics, skin care products, paints, and water treatment processes. Disagreement remains regarding the safety of nano-TiO2, little epidemiological data is available to provide needed resolution. Most studies have examined effects using acute exposure experiments with relatively few a chronic design. We cyto- genotoxicity CHO-K1 cells following 60 days continuous defined levels nano-TiO2 (0, 10, 20, or 40 μg/ml). Oxidative stress...

“Observation of d orbital holes.” “Electrons seen in orbit.” These headlines were for two articles Nature on the electronic structure Cu2O. The stirring statements X-ray electron-density determinations, bonds, and existence shape orbitals are challenged herein with respect to six points, basis relevant literature quantum chemical calculations. picture shows a core argument p orbital: Upon simplification abstraction (left: electron density map; center: polar graph; right: “textbook” style)...

Abstract Controllable synthesis of 2D carbon nanosheets with high heteroatom‐doping level, large specific surface area, and hierarchically pore structure is difficult desired. In this work, a novel simple self‐sacrificing in situ formed dual‐template strategy first developed to synthesize N/S codoped porous nanosheets. The in‐situ g ‐C 3 N 4 amorphous ZnO act as templates on account their thermal decomposition evaporation at higher temperature. simultaneously possess level (N: 10.51 wt%; S:...

Lithium-sulphur (Li-S) batteries are high-energy-density and cost-effective batteries. Herein, petal-like Ni1-x Mn x (OH)2 (x ≈ 0.04) nanosheets were synthesised using a hydrothermal method the electrical conductivity of Ni(OH)2 was improved by applying cathode functional materials in Li-S With up to 5 mg cm-2 S content cathode, fabricated electrode exhibited specific discharge capacities 1375 1150 mA h g-1 at 0.2 0.5C, retained this capacity 813 714 after 200 cycles, respectively....

The excellent properties of graphene reinforced composites (GRC) enable them to be promising material candidates for developing high-performance and multifunctional devices structures. When subjected thermal environment, temperature can significantly affect the structural behaviors these components. It is necessary consider effects while conducting analysis. This work first attempts investigate nonlinear vibration functionally graded (FG) nanoplatelet (GNP) composite (FG-GNPRC) dielectric...

Two new stilbenoids, carasiphenol C (1) and Carasiphenol D (2), one dihydroaurone, carasinaurone (3), were isolated from the aerial parts of Caragana sinica, along with three known substances. Their structures elucidated on basis spectroscopic methods X-ray-diffraction analysis. Compound 2 showed significant biological activity against Pyricularia oryzae.

Si-Based microdisks with Ge quantum dots (QDs) have been of great interest due to their potential as the desired light source for monolithic optical-electronic integrated circuits (MOEICs), well in studies cavity electrodynamics (CQED). Here, we report on unique SiGe nanodisk arrays embedded QDs directly realized bulk Si substrates. Their superior optoelectronic properties are demonstrated by remarkably enhanced photoluminescence coupling between QD emissions and modes nanodisk, even though...