Facile synthesis of hierarchical core-shell carbon@ZnInS composite for boosted photothermal-assisted photocatalytic H production.

Against the backdrop of energy shortage, hydrogen energy has attracted much attention as a green and clean energy source. In order to explore efficient hydrogen production pathways, we designed a composite photocatalyst with carbon-based core-shell photothermal-assisted photocatalytic system (Carbon@ZnInS, denoted as C@ZIS). The well-designed catalyst C@ZIS composites demonstrated a photocatalytic hydrogen precipitation rate of 2.

Abundant Edge Active Sites-Modified High-Crystalline g-CN for Hydrogen Peroxide Production from Pure-Water via a Quasi-Homogeneous Photocatalytic Process.

Ultrathin carbon nitride pioneered a paradigm that facilitates effective charge separation and acceleration of rapid charge migration. Nevertheless, the dissociation process confronts a disruption owing to the proclivity of carbon nitride to reaggregate, thereby impeding the optimal utilization of active sites. In response to this exigency, the adoption of a synthesis methodology featuring alkaline potassium salt-assisted molten salt synthesis is advocated in this work, aiming to craft a nitrogenated graphitic carbon nitride (g-CN) photocatalyst characterized by thin layer and hydrophilicity, which not only amplifies the degree of crystallization of g-CN but also introduces a plethora of abundant edge active sites, engendering a quasi-homogeneous photocatalytic system.

Boosting photothermal-assisted photocatalytic water/seawater splitting into hydrogen based on greenhouse-induced photothermal effect.

Photothermal-assisted photocatalytic hydrogen production is a very promising way to maximize solar energy utilization to obtain clean energy. Herein, we designed a composite photocatalyst with coating core-shell FeO@SiO nanoparticles on the surface of ZnInS micro-flowers for high-efficient photothermal-assisted photocatalytic water/seawater splitting. Experimental results reveal that in the core-shell structure of FeO@SiO, the addition of the SiO shell in FeO@SiO not only separates the photothermal and photochemical components, avoiding competition between them, but also further increases the temperature of the core in a manner similar to the greenhouse effect, which was used as a hot core to provide heat to the ZnInS photocatalyst to increase the surface reaction temperature and enhance the collision chances of photo-generated carriers into causing severe recombination of carriers, thus promoting the hydrogen generation.