Construction of Near-Infrared-Driven SnS2@NH2-UiO-66 Core-Shell heterojunction with synergistic Photothermal-Photocatalytic for Dual-Functional tetracycline degradation and hydrogen evolution

• A Z-Scheme Core-shell SnS 2 @NH 2 -UiO-66 heterojunction photocatalyst was prepared. • Carrier transfer channels in heterojunction interfaces realize high-efficiency electron-hole spacial separation. • Heterojunction achieves synergistic near-infrared photothermal effect to promote carrier transfer. • The excellent photocatalytic hydrogen evolution and degradation of tetracycline in water were achieved. The SnS 2 @NH 2 -UiO-66 (SU) core–shell Z-scheme heterojunction was prepared using a two-step hydrothermal method. SnS 2 nanosheets grew on the surface of metal–organic framework NH 2 -UiO-66 (U6N) octahedral nanoparticles, and the tight interface between the particles ensures stable electron transfer. SnS 2 can inhibit the recombination of photoinduced electron-hole pairs. The unique core–shell structure increases the interface area, providing sufficient surface reaction sites for reactants. Additionally, the unique photothermal properties of the SnS 2 component ensure the excellent photothermal effect of SU under infrared light irradiation, which is conducive to initiating near-field temperature rise and promoting the photocatalytic process. SU exhibits an outstanding photocatalytic H 2 evolution rate of 5663.28 μmol h -1 g −1 and a tetracycline degradation efficiency of 95.1 % within 120 min, significantly higher than the 35.1 % of pure SnS 2 and the 23.1 % of pure U6N. This can be attributed to the unique core–shell Z-scheme heterojunction structure, which facilitates the transfer and spatial separation of photogenerated electron-hole pairs, as well as the unique photothermal effect that promotes carrier transfer, significantly extending the carrier lifetime. Furthermore, long-term stability indicates potential photocatalysis application value due to the inhibition of sulfide photo-corrosion by the core–shell Z-scheme structure.