Porous and graphitic carbon nanosheets with controllable structure for zinc-ion hybrid capacitor.

The imbalances of storage capacity and reaction kinetics between carbonaceous cathodes and zinc (Zn) anodes restrict the widespread application of Zn-ion hybrid capacitor (ZIHC). Structure optimization is a promising strategy for carbon materials to achieve sufficient Zn storage sites and satisfied ion-electron kinetics. Herein, porous graphitic carbon nanosheets (PGCN) were simply synthesized using a K[Fe(CO)]- and urea-assisted foaming strategy with polyvinylpyrrolidone as carbon precursor, followed by activation and graphitization.

Behavioral and molecular response of the insect parasitic nematode Steinernema carpocapsae to plant volatiles.

Entomopathogenic nematodes (EPNs) use the chemical cues emitted by insects and insect-damaged plants to locate their hosts. Steinernema carpocapsae, a species of EPN, is an established biocontrol agent used against insect pests. Despite its promising potential, the molecular mechanisms underlying its ability to detect plant volatiles remain poorly understood.

The Effect of on the Fecal Microbiota, Short Chain Fatty Acids, Odorous Substances, and Blood Biochemical Indices of Cats.

Lactobacilli have played an important role in the gut health of pets. The aim of this research was to study the effects of isolated Lactobacilli (named L11) on the immune, nutrient metabolism, and gut health of cats. Twelve healthy adult cats were randomly assigned into two groups, the control group (CONTROL, = 6, without any probiotics product) and the treatment group (probiotics, = 6, L11 10 CFU/kg feed), while using the same dry diet.

Constructing a carboxyl-rich angstrom-level trap in a metal-organic framework for the selective capture of lithium.

A metal-organic-framework-based ion trap was designed tailoring linker functionality as well as free -COOH density. The mixed-linker UiO-66-H/H exhibits higher adsorption for Li ions than H-free UiO-66-H because the H linker provides an additional -COOH group in the local region.

3D Porous VO/N-Doped Carbon Nanosheet Hybrids Derived from Cross-Linked Dicyandiamide-Chitosan Hydrogels for Superior Supercapacitor Electrode Materials.

Three-dimensional porous carbon materials with moderate heteroatom-doping have been extensively investigated as promising electrode materials for energy storage. In this study, we fabricated a 3D cross-linked chitosan-dicyandiamide-VOSO hydrogel using a polymerization process. After pyrolysis at high temperature, 3D porous VO/N-doped carbon nanosheet hybrids (3D VNCN) were obtained.

Investigating the Regulatory Mechanism of the Sesquiterpenol Nerolidol from a Plant on Juvenile Hormone-Related Genes in the Insect .

Various plant species contain terpene secondary metabolites, which disrupt insect growth and development by affecting the activity of juvenile hormone-degrading enzymes, and the juvenile hormone (JH) titers maintained in insects. Nerolidol, a natural sesquiterpenol belonging to the terpenoid group, exhibits structural similarities to insect JHs. However, the impact of nerolidol on insect growth and development, as well as its underlying molecular mechanism, remains unclear.

In Situ Low-Temperature Carbonization Capping of LiFePO with Coke for Enhanced Lithium Battery Performance.

Lithium batteries incorporating LiFePO (LFP) as the cathode material have gained significant attention in recent research. However, the limited electronic and ionic conductivity of LFP poses challenges to its cycling performance and overall efficiency. In this study, we address these issues by synthesizing a series of LiFePO/carbon (LFP/C) composites through low-temperature carbonization coating of LFP in the presence of Coke as the carbon source.

Rational design of activated graphitic carbon spheres with optimized ion and electron transfer channels for zinc-ion hybrid capacitors.

Herein, three-dimensional activated graphitic carbon spheres (AGCS) were constructed by simultaneous activation-graphitization of Fe-tannic acid coordination spheres with the assistance of KOH. Nanosheets-assembled AGCS with complex intersecting channel system can expose more active sites for charge storage. Simultaneous activation-graphitization can relieve trade-off relationship between porosity and conductivity of carbon materials.

Tunable Resistive Switching Behaviors and Mechanism of the W/ZnO/ITO Memory Cell.

A facile sol-gel spin coating method has been proposed for the synthesis of spin-coated ZnO nanofilms on ITO substrates. The as-prepared ZnO-nanofilm-based W/ZnO/ITO memory cell showed forming-free and tunable nonvolatile multilevel resistive switching behaviors with a high resistance ratio of about two orders of magnitude, which can be maintained for over 10 s and without evident deterioration. The tunable nonvolatile multilevel resistive switching phenomena were achieved by modulating the different set voltages of the W/ZnO/ITO memory cell.

A Facile Hydrothermal Synthesis and Resistive Switching Behavior of α-FeO Nanowire Arrays.

A facile hydrothermal process has been developed to synthesize the α-FeO nanowire arrays with a preferential growth orientation along the [110] direction. The W/α-FeO/FTO memory device with the nonvolatile resistive switching behavior has been achieved. The resistance ratio (R/R) of the W/α-FeO/FTO memory device exceeds two orders of magnitude, which can be preserved for more than 10s without obvious decline.

The Effect of Nitrogen Annealing on the Resistive Switching Characteristics of the W/TiO/FTO Memory Device.

In this paper, the effect of nitrogen annealing on the resistive switching characteristics of the rutile TiO nanowire-based W/TiO/FTO memory device is analyzed. The W/TiO/FTO memory device exhibits a nonvolatile bipolar resistive switching behavior with a high resistance ratio (R/R) of about two orders of magnitude. The conduction behaviors of the W/TiO/FTO memory device are attributed to the Ohmic conduction mechanism and the Schottky emission in the low resistance state and the high resistance state, respectively.

Monodisperse MoS/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries.

Traditional graphite anode material typically shows a low theoretical capacity and easy lithium decomposition. Molybdenum disulfide is one of the promising anode materials for advanced lithium-ion batteries, which possess low cost, unique two-dimensional layered structure, and high theoretical capacity. However, the low reversible capacity and the cycling-capacity retention rate induced by its poor conductivity and volume expansion during cycling blocks further application.

Post-synthesis introduction of dual functional groups in metal-organic framework for enhanced adsorption of moxifloxacin antibiotic.

Highly effective removal of antibiotics from aqueous solution is of importance while still faces challenge. Herein, we report a novel metal-organic framework (MOF) adsorbent, MOF-808-SIPA (SIPA, 5-sulfoisophthalic acid), constructed via post-synthesis exchange strategy. On the basis, dual active groups including sulfonic acid and carboxyl groups are successfully introduced.

Thiol-decorated defective metal-organic framework for effective removal of mercury(II) ion.

Removal of mercury (Hg) ion from water is important while still faces challenges in capacity and adsorption speed. Herein, using thiol-containing mercaptoacetic acid (MA) as the template, we constructed a novel metal-organic framework (MOF) adsorbent, Zr-MSA-MA (MSA, mercaptosuccinic acid). Unlike other monodentate acids such as acetic acid and formic acid, MA benefits to maintain high-content binding sites, in the meantime of defect formation.

The Influence of Cryogenic Treatment on the Microstructure and Mechanical Characteristics of Aluminum Silicon Carbide Matrix Composites.

Aluminum matrix composites have been widely used in aerospace and automotive fields due to their excellent physical properties. Cryogenic treatment was successfully adopted to improve the performance of aluminum alloy components, while its effect and mechanism on the aluminum matrix composite remained unclear. In this work, the effects of cryogenic treatment on the microstructure evolution and mechanical properties of 15%SiCp/2009 aluminum matrix composites were systematically investigated by means of Thermoelectric Power (TEP), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).

Construction of dual sulfur sites in metal-organic framework for enhanced mercury(II) removal.

Highly efficient removal of mercury ion (Hg) from aqueous solution is a serious concern. Herein, a novel metal-organic framework (MOF) containing dual sulfur sites was successfully constructed via an in-situ method. Different with previous reports, thiophene and thiol sites were simultaneously introduced via organic linker and inorganic cluster, resulting in high-density sulfur sites.

Caterpillar-Induced Rice Volatile (E)-β-Farnesene Impairs the Development and Survival of Larvae by Disrupting Insect Hormone Balance.

Significant research progress has recently been made on establishing the roles of in rice defense. (E)-β-farnesene (Eβf) is a major product of activity but its physiological functions and potential mechanisms against have not yet been clarified. In the present study, larvae were artificially fed a diet containing 0.

Vanadium nitride nanoparticle decorated N-doped carbon nanotube/N-doped carbon nanosheet hybrids a CN self-sacrificing method for electrochemical capacitors.

Owing to the wide negative potential window (∼1.2 V) along with high specific capacitance (1340 F g) in alkaline electrolyte, vanadium nitride (VN) has been served as promising negative supercapacitor electrode material. However, VN is easy to dissolve during cycling process and shows low capacitance retainability.

Fabrication of NiO-carbon nanotube/sulfur composites for lithium-sulfur battery application.

The practical applications of lithium-sulfur batteries are still a great challenge due to the polysulfide shuttle and capacity decay. Herein, we report a NiO-carbon nanotube/sulfur (NiO-CNT/S) composite by hydrothermal and thermal treatments. This hybrid combines the high conductivity of CNTs and double adsorption of CNTs and NiO (physical and chemical adsorption) to improve the electrochemical performance for the sulfur electrodes.

Ferrate (VI) Oxidation Is an Effective and Safe Way to Degrade Residual Colistin - a Last Resort Antibiotic - in Wastewater.

The rise of novel mobile resistance genes seriously threatens the use of colistin as a last resort antibiotic for treatment of multidrug-resistant Gram-negative bacterial infections in humans. Large quantities of colistin are released annually into the environment through animal feces. This leads to environmental toxicity and promotes horizontal transmission of the gene in aqueous environments.

Rationally Tailoring Pore and Surface Properties of Metal-Organic Frameworks for Boosting Adsorption of Dy.

The adsorption and recovery of dysprosium ions (Dy) from industrial wastewater are necessary but still challenging. Herein, we constructed a series of defect-containing metal-organic frameworks (MOFs) [UiO-66-(COOH)] using sodium benzoate (BCNa) as a modulator. Upon the formation of defects, the porosity and surface charge properties of the MOFs were improved, leading to a higher utilization ratio of active groups and higher adsorption capacities for Dy.

Synergistic effect of carboxyl and sulfate groups for effective removal of radioactive strontium ion in a Zr-metal-organic framework.

Rapid removal of radioactive strontium from nuclear wastewater is of great significance for environmental safety and human health. This work reports the effective adsorption of strontium ion in a stable dual-group metal-organic framework, Zr(OH)(BDC-(COOH))(SO) (Zr-BDC-COOH-SO), which contains strontium-chelating groups (-COOH and SO) and a strongly ionizable group (-COOH). Zr-BDC-COOH-SO exhibits very rapid adsorption kinetics (<5 min) and a maximum adsorption capacity of 67.

Complete genomic sequence and analysis of β2 toxin gene mapping of Clostridium perfringens JXJA17 isolated from piglets in China.

Clostridium perfringens (Cp) is a ubiquitous opportunistic pathogen of humans and animals in the natural environment and animal intestines. The pathogenicity of Cp depends on the production of toxins encoded by genes on the chromosomes or plasmids. In contemporary literature, there is no clear consensus about the pathogenicity of CpA β2 toxin.