Unexpected High-Performance Photocatalytic Hydrogen Evolution in Co@NCNT@ZnIn S Triggered by Directional Charge Separation and Transfer.

The structural design of photocatalysts is highly related to the separation and transfer of photogenerated carriers, which is essential for the improvement of photocatalytic hydrogen evolution performance. Here, the hybrid photocatalyst M@NCNT@ZIS (M: Fe, Co, Ni; NCNT: nitrogen-doped carbon nanotube; ZIS: ZnIn S ) with a hierarchical structure is rationally designed and precisely synthesized. The unique hollow structure with a large specific surface area offers abundant reactive sites, thus increasing the adsorption of reactants.

Ultrahigh piezocatalytic capability in eco-friendly BaTiO nanosheets promoted by 2D morphology engineering.

Piezocatalysis, converting mechanical vibration into chemical energy, is an emerging technology to address environmental issues. In this work, we propose an efficient method to significantly improve the piezocatalytic activity by morphology engineering rather than composition design. The catalytic property in BaTiO nanocrystallites with diverse morphologies is investigated by dye degradation and hydrogen production under ultrasonic vibration.