Graphene-analogue BN modified Ag₃PO₄photocatalysts were successfully prepared. In the presence of the BN, it could effectively enhance the photoactivity and stability of Ag₃PO₄.

The removal of the surface paint of Q345 (Gr·B) steel, as well as microstructure and hardness of the cleaned surface were investigated. The laser source used in this study is a nanosecond pulsed Gaussian light source. The surface morphology and microstructure were characterized by a scanning electron microscope and electron back-scattered diffraction. A hardness test was used for capturing variations of the parameter of the cleaned region in comparison to the base metal. The results show that when the X-scanning speed was 1500 mm/s and Y-moving speeds was 7 mm/s during ns-laser cleaning, respectively, the cleaned surface was relatively flat and there was only a few small residual paint. In addition, the contents of Fe and C elements on the cleaned surface reached to 89% and 9%, respectively. Moreover, the roughness was the lowest of 0.5 μm through the observation of the three-dimensional topography. In addition, a fine grain layer appeared on the cleaned surface after laser cleaning at the X-scanning speeds of 500 mm/s and 1000 mm/s. The maximum hardness of the fine grain layer was more than 400 HV, higher than the base metal.

Bimetal nickel–cobalt sulfide nanosheets grown on nickel foam (NCS/NF) exhibit superior OER and UOR activities with low potentials of 1.46 and 1.31 V at 10 mA cm ⁻² , and even good activity in alkaline water electrolytes.