Defective phase engineering of S-scheme TiO2–SnS/SnS2 core–shell photocatalytic nanofibers for elevated visible light responsive H2 generation and nitrogen fixation

To promote the fast separation of photogenerated charge carriers and promote stability, we designed core–shell TiO 2 –SnS/SnS 2 heterostructures with enriched oxygen-related defect states without compromising their morphology.