Synthesis of core-shell nanostructured Cr2O3/C@TiO2 for photocatalytic hydrogen production

In this study, the Cr2O3/[email protected]2 composite was synthesized via calcination of yolk–shell [email protected]2. The presented core–shell structure, where Cr-doped TiO2 and Cr2O3/C were shell core, respectively. introduction Cr3+ Cr2O3/C, which derived from MIL-101, in enhanced its visible light absorbing ability lowered recombination rate photogenerated electrons holes. large surface area provided numerous active sites for photoreduction reaction. Consequently, photocatalytic performance production H2 better than that pure TiO2. Under irradiation a 300 W Xe arc lamp, calcined at 500 °C 446 μmol h−1 g−1, approximately four times higher pristine nanoparticles. Moreover, exhibited high 25.5 g−1 under (λ > 420 nm). could be attributed to wide photoresponse range efficient separation This paper offers some insights into design novel photocatalyst water-splitting applications.