Shangshen Feng

A series of β-FeSe nanorods composited g-C ₃ N ₄ were prepared. The structure, morphology, chemical state, photocatalytic activity, electrochemical impedance and photoluminescence of β-FeSe/g-C ₃ N ₄ composites were well characterized. It is found that the decolourization rate of 3 wt% β-FeSe/g-C ₃ N ₄ composites reaches 4.4 times than that of g-C ₃ N ₄ . The improved photocatalytic properties could be ascribed to the reduced recombination of photogenerated electrons and holes, which is derived from the excellent ability of β-FeSe to capture and transfer electrons. This work provides an alternative co-catalyst for decolourizing organic matter.

Benefitting from it novel structure, MoS₂-Ti_L/MoS₂-Ti_H nano multilayer coating possesses excellent tribological properties. The multilayer coating was prepared by varying the power of Ti target alternatively using magnetron sputtering technology. To investigate its tribological properties, more extensively analyses have been carried out on a reciprocating friction and wear testing machine under different loads. Then, wear trace morphology was studied by a confocal microscope. The friction coefficient is very stable around 0.1 ~ 0.2 at a load smaller than 20 N. Correspondingly, wear trace is narrow and the wear loss is very small under a small load. With a larger load, wear traces become wider and the lubricant only lasted for a short time. Whereas, compared to MoS₂-Ti composite coating, the multilayer coating has the advantage apparently on wear resistance and lubrication.

A new photocatalyst, alveolate Cu _2−x Se microsheets, is developed, which reveals superior photocatalytic discoloration of Rhodamine B.

Ag/BiPbO2Cl nanosheet composites were successfully prepared by hydrothermal synthesis and photo-reduction. The morphology, microstructure, and optical properties of the as-prepared Ag/BiPbO2Cl nanosheet composites were characterized using TEM, XRD, and UV-Vis diffuse reflection spectroscopy. The prepared Ag/BiPbO2Cl nanosheet composites with 0.5 wt% Ag exhibit favorable photocatalytic activity, which is 3.6 times that of BiPbO2Cl nanosheet. The enhanced photocatalytic properties can be attributed to the inner electromagnetic field, higher visible light response range, excellent conductivity, and lower Fermi level of Ag.

Integrated VG/MoO ₂ core/shell arrays prepared by a powerful plasma enhanced chemical vapor deposition–electrodeposition method are demonstrated to have superior sodium ion storage performance, high capacities and good cycling life.

The extremely chemically sensitive magnetic behavior changing from paramagnetism to ferromagnetism induced by incorporation of La (2.5%) in SrCo ₂ As ₂ is shown.

Hierarchical porous Ti ₂ Nb ₁₀ O ₂₉ nanospheres prepared by a facile solvothermal method are demonstrated with superior Li-ion storage performance with high capacities and good cycling life.