Homogeneously alloyed nanoparticles of immiscible Ag-Cu with ultrahigh antibacterial activity.

Immiscible bimetallic Ag-Cu system has been synthesized by the pulsed plasma in liquid method with a graph of one pulse duration. Herein, by combining X-ray power diffraction, K-edge X-ray absorption near edge structure and high-resolution transmission electron microscopy, our results indicate that homogeneously alloyed Ag-Cu nanoparticles (Ag-Cu NAs) have the average diameter about 2.1 nm, composed by 48.

Tailoring Morphologies, Photocatalytic Activity, and Energy Bands of BiFeO via Valence State Transformation of Doped V Ions.

Photocatalysts with suitable nanostructures and excellent photocatalytic activity driven by solar light are in great demand for rapidly eliminating the organic pollutants from wastewater. In order to improve the photocatalytic activities, three main factors should be considered, including band gap, band structure, and morphologies. Most of the previous studies only focused on manipulating one factor, such as the band gap by element doping.

Improvement of the Biodegradation Property and Biomineralization Ability of Magnesium-Hydroxyapatite Composites with Dicalcium Phosphate Dihydrate and Hydroxyapatite Coatings.

The application of calcium phosphate reinforced magnesium matrix composites has not achieved the expected effect to control the degradation rate of magnesium so far. Therefore, in order to enhance the corrosion resistance and further develop the surface bioactivity of the composites to meet specific requirements of bone tissue engineering applications, biocompatible dicalcium phosphate dihydrate (DCPD) and hydroxyapatite (HA) coatings have been deposited on homemade HA/Mg composites using a simple conversion coating method and a subsequent alkali post-treatment, respectively. The conversion coating mechanism was studied by comparing coating processes on the composites, pure Mg, and an AZ60 Mg alloy.

Super Stable Ferroelectrics with High Curie Point.

Ferroelectric materials are of great importance in the sensing technology due to the piezoelectric properties. Thermal depoling behavior of ferroelectrics determines the upper temperature limit of their application. So far, there is no piezoelectric material working above 800 °C available.