N-doped C-coated MoO2/ZnIn2S4 heterojunction for efficient photocatalytic hydrogen production

Designing a heterojunction photocatalyst to improve the separation efficiency of photogenerated electrons and holes is of great significance to improve the hydrogen production efficiency. In this work, we report a rational design to grow ZnIn2S4 on Mo-MOF-derived N-doped C-coated MoO2 (MOZIS), and it has excellent photocatalytic hydrogen production with triethanolamine (TEOA) as sacrificial agent. N-doped C improves the electron transport efficiency between MoO2 and ZnIn2S4. The systematic study shows that MOZIS has good properties to promote the effective separation and transfer of photocatalytic charges, which is attributed to the tight contact interface and good energy band structure between MoO2 and ZnIn2S4. The optimized nanocomposites have a high hydrogen production efficiency of 10.89 mmol & BULL;g(-1) (4 h) under visible light. MOF-derived N-doped C-coated MoO2 is an effective strategy to improve the photocatalytic hydrogen production efficiency of ZnIn2S4.