Defect and Donor Manipulated Highly Efficient Electron-Hole Separation in a 3D Nanoporous Schottky Heterojunction.

ABSTRACT: Given the rapid recombination of photogenerated charge carriers and photocorrosion, transition metal sulfide photocatalysts usually suffer from modest photocatalytic performance. Herein, S-vacancy-rich ZnIn₂S₄ (V_S-ZIS) nanosheets are integrated on 3D bicontinuous nitrogen-doped nanoporous graphene (N-npG), forming 3D heterostructures with well-fitted geometric configuration (V_S-ZIS/N-npG) for highly efficient photocatalytic hydrogen production. The V_S-ZIS/N-npG presents ultrafast interfacial photogenerated electrons captured by the S vacancies in V_S-ZIS and holes neutralization behaviors by the extra free electrons in N-npG during photocatalysis, which are demonstrated by in situ XPS, femtosecond transient absorption (fs-TA)

SUBMITTER: Yuan C 

PROVIDER: S-EPMC10685433 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature