2D Se-Rich ZnSe/CoSe2@C Heterostructured Composite as Ultrastable Anodes for Alkaline-Ion Batteries.

2D transitional metal selenide heterostructures are promising electrode materials for potassium-ion batteries (PIBs) owing to the large surface area, high mechanical strength, and short diffusion pathways. However, the cycling performance remains a significant challenge, particularly concerning the electrochemical conversion reaction. Herein, 2D Se-rich ZnSe/CoSe@C heterostructured composite is fabricated via a convenient hydrothermal approach followed by selenization process, and then applied as high-performance anodes for PIBs.

Bimetallic Sulfide Hollow Nanocubes Heterostructure Promotes Dual Coupling of Conversion and Alloying/Dealloying Reactions to Achieve Durable Potassium-Ion Battery Anode.

Conversion and alloying-type transitional metal sulfides have attracted significant interests as anodes for Potassium-ion batteries (PIBs) and Sodium-ion batteries (SIBs) due to their high theoretical capacities and low cost. However, the poor conductivity, structural pulverization, and high-volume expansions greatly limit the performance. Herein, CoS/ZnS hollow nanocube-like heterostructure decorated on reduced graphene oxide (CoS/ZnS@rGO) composite is fabricated through convenient hydrothermal and post-heat vulcanization techniques.

Manipulating Atomic-Coupling in Dual-Cavity Boride Nanoreactor to Achieve Hierarchical Catalytic Engineering for Sulfur Cathode.

The catalytic process of LiS formation is considered a key pathway to enhance the kinetics of lithium-sulfur batteries. Due to the system's complexity, the catalytic behavior is uncertain, posing significant challenges for predicting activity. Herein, we report a novel cascaded dual-cavity nanoreactor (NiCo-B) by controlling reaction kinetics, providing an opportunity for achieving hierarchical catalytic behavior.

Zinc-Assisted Cobalt Ditelluride Polyhedra Inducing Lattice Strain to Endow Efficient Adsorption-Catalysis for High-Energy Lithium-Sulfur Batteries.

Developing a conductive catalyst with high catalytic activity is considered to be an effective strategy for improving cathode kinetics of lithium-sulfur batteries, especially at large current density and with lean electrolytes. Lattice-strain engineering has been a strategy to tune the local structure of catalysts and to help understand the structure-activity relationship between strain and catalyst performance. Here, Co Zn Te @NC is constructed after zinc atoms are uniformly doped into the CoTe lattice.

In Situ Growth of CoS/ZnS Nanoparticles on Graphene Sheets as an Ultralong Cycling Stability Anode for Potassium Ion Storage.

Metal sulfides are promising anodes for potassium-ion batteries (PIBs) due to their high theoretical capacity and abundant active sites; however, their intrinsic low conductivity and poor cycling stability hampered their practical applications. Given this, the rational design of hybrid structures with high stability and fast charge transfer is a critical approach. Herein, CoS/ZnS@rGO hybrid nanocomposites were demonstrated with stable cubic phases.

SnO Anchored in S and N Co-Doped Carbon as the Anode for Long-Life Lithium-Ion Batteries.

Tin dioxide (SnO) has been the focus of attention in recent years owing to its high theoretical capacity (1494 mAh g). However, the application of SnO has been greatly restricted because of the huge volume change during charge/discharge process and poor electrical conductivity. In this paper, a composite material composed of SnO and S, N co-doped carbon (SnO@SNC) was prepared by a simple solid-state reaction.

In-situ Nano-Crystallization and Solvation Modulation to Promote Highly Stable Anode Involving Alloy/De-alloy for Potassium Ion Batteries.

For advanced anode materials involving alloy/de-alloy chemistry for potassium ion batteries (PIBs), two-dimensional (2D) bismuth subcarbonate (BCO) nanosheets that possess high theoretical capacity of 631 mAh g are proposed. The large lattice spacing of 0.683 nm along b axis facilitate insertion of K ion to boost high-capacity delivery of ca.

Effects of Carbon Content and Current Density on the Li Storage Performance for MnO@C Nanocomposite Derived from Mn-Based Complexes.

In this study, a simple method was adopted for the synthesis of MnO@C nanocomposites by combining in-situ reduction and carbonization of the MnO precursor. The carbon content, which was controlled by altering the annealing time in the CH/Ar atmosphere, was proved to have great influences on the electrochemical performances of the samples. The relationships between the carbon contents and electrochemical performances of the samples were systematically investigated using the cyclic voltammetry (CV) as well as the electrochemical impedance spectroscopy (EIS) method.

A multi-shelled CoP nanosphere modified separator for highly efficient Li-S batteries.

Lithium-sulfur batteries are considered to be one of the most promising energy-storage systems because of their high theoretical energy density, as well as low cost, nontoxicity and natural abundance of sulfur. However, their poor cycling stability mostly originates from the shuttling of polysulfides which hinders their future practical applications. Here, multi-shelled CoP nanospheres are designed as a coated separator material for Li-S batteries for the first time.

Identification of Polar Constituents in the Decoction of Juglans mandshurica and in the Medicated Egg Prepared with the Decoction by HPLC-Q-TOF MS².

As a folk medicinal plant, has been used for the treatment of cancer in China and Korea. Traditionally, is decocted together with chicken eggs. Both the decoction and medicated eggs possess anti-tumor properties.

Multiconstituent identification in root, branch, and leaf extracts of Juglans mandshurica using ultra high performance liquid chromatography with quadrupole time-of-flight mass spectrometry.

As a traditional medicinal plant, Juglans mandshurica has been used for the treatment of cancer. Different organs of this plant showed anti-tumor activity in clinic and laboratory. Comparative identification of constituents in different plant organs is essential for investigation of the relationship between chemical constituents and pharmacological activities.

Fabrication of Various V2O5 Hollow Microspheres as Excellent Cathode for Lithium Storage and the Application in Full Cells.

Vanadium pentoxide (V2O5) has attracted interesting attention as cathode material for LIBs because of its stable crystal structure and high theoretical specific capacity. However, the low rate performance and poor long-term cycling stability of V2O5 limit its applications. In order to improve its battery performance, various V2O5 hollow microspheres including a yolk-shell structure, double-shell structure, triple-shell structure, and hierarchical hollow superstructures have been selectively prepared.

A hexangular ring-core NiCo2O4 porous nanosheet/NiO nanoparticle composite as an advanced anode material for LIBs and catalyst for CO oxidation applications.

A porous hexangular ring-core NiCo2O4 nanosheet/NiO nanoparticle composite has been synthesized using a hydrothermal method followed by an annealing process in air. The as-obtained composite as an anode material exhibits a high initial discharge capacity of 1920.6 mA h g(-1) at a current density of 100 mA g(-1) and the capacity is retained at 1567.

[Studies on optimizing extraction technics of flowers of Polygonum orientale by response surface methodology].

Objective: To analyze and optimize extraction technics of Polygonum orientale flowers by response surface methodology.

Methods: With the index for the content of taxifolin in flowers of Polygonum orientale, the effect of three factors such as concentration of alcohol, extraction time and solvent-solid ratio was designed by Box-Behnken central composite. Extraction technic parameters of Polygonum orientale flowers was optimized by response surface methodology.

Role of berberine in anti-bacterial as a high-affinity LPS antagonist binding to TLR4/MD-2 receptor.

Background: Berberine is an isoquinoline alkaloid mainly extracted from Rhizoma Coptidis and has been shown to possess a potent inhibitory activity against bacterial. However, the role of berberine in anti-bacterial action has not been extensively studied.

Methods: The animal model was established to investigate the effects of berberine on bacterial and LPS infection.

[Determination of taxifolin in Polygonum orientale of different storage period].

Objective: To find out the correlation between the content of taxifolin in Polygonum orientale and the storage time.

Method: HPLC was used to determine taxifolin. The chromatographic condition was as following: Diamonsil C18 column (4.

[Study on species identification of commercial drug cudraniae tricuspidatae radix et caulis and its medicinal parts].

Objective: To establish an identification method of Cudrania tricuspidata and Cudrania cochinchinensis, and their medicinal parts, and analyse the species of commercial drug Cudraniae Tricuspidatae Radix et Caulis.

Methods: TLC and First-order Derivative UV Spectrophotometry were used.

Results: Commercial drugs 5, 6, 7 and 9 belonged to the stem of Cudrania cochinchinensis, commercial drug 1, 2, 3 ,4 and 8 were neither Cudrania tricuspidata nor Cudrania cochinchinensis.

[Simultaneous determination of four flavones in root and stem of Cudrania tricuspidata and C. cochinchinensis by HPLC-DAD].

Objective: To establish a HPLC-DAD method for the determination of axifolin, naringenin, quercetin and kaempferol in Cudrania tricuspidata and C. cochinchinensis in order to provide a scientific reference for species identification and quality evaluation, by establishing.

Method: The determination was performed by HPLC-DAD on an Agilent C18 column (4.

Double asynchronous orthogonal sample design scheme for probing intermolecular interactions.

This paper introduces a new approach called double asynchronous orthogonal sample design (DAOSD) to probe intermolecular interactions. A specifically designed concentration series is selected according to the mathematical analysis to generate useful 2D correlated spectra. As a result, the interfering portions are completely removed and a pair of complementary sub-2D asynchronous spectra can be obtained.

[Effects of different processing on active components in fructus polygoni orientalis by HPLC analysis].

Objective: To study the effects of different processing on taxifolin and quercetin in Fructus Polygoni Orientalis.

Methods: The analysis was performed on a Agilent column (4. 6 mm x 150 mm, 5 microm) eluted with a gradient elution of methanol-water containing 0.

[The analysis for silver iodide fine particles of TLC/FTIR matrix].

In situ TLC/FTIR technique has tremendous potential in the analysis of complex mixtures. However, the progress in this technique was quite slow. The reason is that conventional stationary phase has strong absorption in FTIR spectrum and thus brings about severe interference in the detection of samples.

Synthesis, properties and applications of nanoscale nitrides, borides and carbides.

Nanoscale nitrides, borides and carbides are a fascinating type of materials, which have aroused tremendous and continuous research interest for decades owing to their special mechanical, electrical, optical, photoelectronic, catalytic properties and widespread uses. In this feature article, recent developments and breakthroughs in the synthesis, properties and applications of nanometre scale nitrides (BN, Si(3)N(4), GaN, noble nitrides), borides (LnB(6), LnB(2), Fe(3)BO(5), LiMBO(3)) and carbides (carbon, SiC, TiC, NbC, WC) were briefly reviewed in sequence of their different dimensions (1D, 2D and 3D). In particular, our latest advances in the "autoclave route" fabrication of nanoscale nitrides, borides, and carbides were highlighted.

LC determination and pharmacokinetic study of the main phenolic components of Portulaca oleracea L. extract in rat plasma after oral administration.

This study investigated the pharmacokinetics of hesperidin (HP), ferulic acid (FA) and p-coumaric acid (CA) in rat plasma after oral administration of Portulaca oleracea L. extract (POE). The plasma concentrations were determined by HPLC with vitexin-2″-O-rhamnoside (VR) as internal standard.