Constructing MoS2-coupled carbon/g-C3N4 heterointerface to optimize charge delivery for enhanced photocatalytic capacity

It is appealing to design targeted integrating photocatalysts for solar energy conversion reaction. Currently in-situ synthesizing method is no doubt a more progressive way to obtain hybrid catalyst with strong connection compared with mixing chemical composition directly. The heterointerface status is becoming essential during photocatalytic reaction for studying photo-generated charge transfers between different components. Here, a simple coordination process using Mo-dopamine is introduced to form integrating g-C3N4@MoS2/C nanosheets by subsequent treatment. An excellent photocatalytic hydrogen production performance (712.90 mu mol/g*h) is finally shown and it exhibits negligible degradation for 20 h. The large surface area of g-C3N4 , function of high dispersed MoS2 cocatalyst, conductive route of carbon structure and synergism during the whole charge transfer process contribute to the improved catalytic ability, which is confirmed via further measurement and DFT calculation. The study highlights the advantage of coordination system in catalyst interface design and provides a universal approach to build multiple-photocatalysts.

Automated summary

This study introduces a coordination process to synthesize g-C3N4@MoS2/C nanosheets with excellent photocatalytic hydrogen production performance. The large surface area of g-C3N4, highly dispersed MoS2 cocatalyst, conductive route of the carbon structure, and the synergy during the charge transfer process contribute to the improved catalytic ability.