Enabling Interfacial Lattice Matching by Selective Epitaxial Growth of CuS Crystals on BiWO Nanosheets for Efficient CO Photoreduction into Solar Fuels.

Photocatalytic CO reduction serves as an important technology for value-added solar fuel production, however, it is generally limited by interfacial charge transport. To address this limitation, a two-dimensional/two-dimensional (2D/2D) p-n heterojunction CuS-BiWO (CS-BWO) with highly connected and matched interfacial lattices was designed in this work via a two-step hydrothermal tandem synthesis strategy. The integration of CuS with BWO created a robust interface electric field and provided fast charge transfer channels due to the work function difference, as well as highly connected and matched interfacial lattices.

2D MoB MBene: An Efficient Co-Catalyst for Photocatalytic Hydrogen Production under Visible Light.

Highly active and low-cost co-catalysts have a positive effect on the enhancement of solar H production. Here, we employ two-dimensional (2D) MBene as a noble-metal-free co-catalyst to boost semiconductor for photocatalytic H production. MoB MBene is a 2D nanoboride, which is directly made from MoAlB by a facile hydrothermal etching and manual scraping off process.

Charge-orbital synergistic engineering of TM@TiCOB for highly selective CO electrochemical reduction.

Inspired by MXene nanosheets and their regulation of surface functional groups, a series of TiC-MXene-based single TM atom electrocatalysts with a doped boron (B) atom (TM@TiCOB, TM is V, Cr, Mn, Fe, Co or Ni, = 0.11) are proposed for achieving a high performance catalytic CO reduction reaction (CORR). The results reveal that the doped B atom involves in the adsorption reaction of CO molecules and CO intermediates in the CORR.

In Situ 1D Carbon Chain-Mail Catalyst Assembly for Stable Lithium-Sulfur Full Batteries.

The main obstacles for the commercial application of Lithium-Sulfur (Li-S) full batteries are the large volume change during charging/discharging process, the shuttle effect of lithium polysulfide (LiPS), sluggish redox kinetics, and the indisciplinable dendritic Li growth. Especially the overused of metal Li leads to the low utilization of active Li, which seriously drags down the actual energy density of Li-S batteries. Herein, an efficient design of dual-functional CoSe electrocatalyst encapsulated in carbon chain-mail (CoSe@CCM) is employed as the host both for the cathode and anode regulation simultaneously.

Highly NH Sensitive and Selective TiCO-Based Gas Sensors: A Density Functional Theory-NEGF Study.

Ammonia (NH) detection at the early stage is an important precaution for human health and agricultural production. However, conventional sensing materials are difficult to achieve all the targeted operational performances such as low power consumption and high selectivity. MXenes are a type of graphene-like emergent material equipped with abundant surface sites benefiting gas-sensing applications.

An Upper Bound Visualization of Design Trade-Offs in Adsorbent Materials for Gas Separations: CO , N , CH , H , O , Xe, Kr, and Ar Adsorbents.

The last 20 years have seen many publications investigating porous solids for gas adsorption and separation. The abundance of adsorbent materials (this work identifies 1608 materials for CO /N separation alone) provides a challenge to obtaining a comprehensive view of the field, identifying leading design strategies, and selecting materials for process modeling. In 2021, the empirical bound visualization technique was applied, analogous to the Robeson upper bound from membrane science, to alkane/alkene adsorbents.

The Atomic Structure and Mechanical Properties of ZIF-4 under High Pressure: Ab Initio Calculations.

The effects of pressure on the structural and electronic properties and the ionic configuration of ZIF-4 were investigated through the first-principles method based on the density functional theory. The elastic properties, including the isotropic bulk modulus , shear modulus , Young's modulus and Poisson's ratio of the orthorhombic-type structure ZIF-4 were determined using the Voigt-Reuss-Hill averaging scheme. The results show that the ZIF-4 phase is ductile according to the analysis of and Cauchy pressure.

The deformation of short-range order leading to rearrangement of topological network structure in zeolitic imidazolate framework glasses.

In recent years, the study of the glassy structure of zeolitic imidazolate frameworks (ZIFs) has been a key breakthrough in glass science. Yet the theoretical understanding of the structure of these complex materials is still in its infancy, especially the short-range structure. The short-structural disorder of two ZIFs and their corresponding molten structure, namely, ZIF-4 and ZIF-62 are studied, using simulations.

Facile Melting-Crystallization Synthesis of CsNaAgInCl: Bi Double Perovskites for White Light-Emitting Diodes.

Lead-free double perovskites (DPs) have outstanding luminescent properties, which make them excellent candidates for wide use in optoelectronics. Herein, a solvent-free melting-crystallization technique, which can produce kilogram-scale DP microcrystals (DP-MCs) in one batch, is invented to synthesize the CsNaAgInCl: Bi ( = 0, 0.2, 0.

Improving the Catalytic CO Reduction on CsAgBiBr by Halide Defect Engineering: A DFT Study.

Pb-free double halide perovskites have drawn immense attention in the potential photocatalytic application, due to the regulatable bandgap energy and nontoxicity. Herein, we first present a study for CO conversion on Pb-free halide perovskite CsAgBiBr under state-of-the-art first-principles calculation with dispersion correction. Compared with the previous CsPbBr, the cell parameter of CsAgBiBr underwent only a small decrease of 3.

[Simultaneous extraction and determination of nine chemically synthetic anticoccidial drug multi-residues in chicken meat using high performance liquid chromatography-tandem mass spectrometry].

A high performance liquid chromatography-tandem mass spectrometric (HPLC-MS/ MS) method was developed for the simultaneous extraction and determination of multi-residues of nine chemically synthetic anticoccidial drugs in chicken meat. Toltrazuril-D3 was used as the internal standard. The sample was extracted by 15 mL acetonitrile/dimethyl sulfoxide (4:1, v/ v, containing 2% acetic acid), cleaned-up by a QuEChERS (quick, easy, cheap, effective, rugged and safe) clean-up tube with 150 mg octadecylsilyl (ODS), 100 mg Florisil and 100 mg graphitized carbon black (GCB).

[Simultaneous determination of residues of three fluoroquinolones in chicken using high performance liquid chromatography with post-column derivatization and terbium sensitized fluorescence].

A method of high performance liquid chromatography with post-column derivatization and terbium sensitized fluorescence for simultaneous determination of residues of ciprofloxacin, norfloxacin and enrofloxacin in chicken was established, based on the effect that Tb3+ can sensibilize fluorescence of fluoroquinolones. Under the optimal chromatographic condition, three fluoroquinolones were separated on a C18 column with 0.05 mol/L acetic acid/acetate buffer-acetonitrile (89:11, v/v) as the mobile phase, and at a flow rate of 0.