Integrating the photocatalytic evolution of clean fuel hydrogen(H_(2))and high value-added products in a cooperative photoredox system is highly indispensable to achieve green and eco-sustainable development.Herein,an...Integrating the photocatalytic evolution of clean fuel hydrogen(H_(2))and high value-added products in a cooperative photoredox system is highly indispensable to achieve green and eco-sustainable development.Herein,an exquisite bifunctional core–shell Mo_(2)C@ZnIn_(2)S_(4) Schottky heterojunction is judiciously designed and constructed to simultaneously exploit photoexcited electron–hole pairs,achieving H_(2) production coupled with valuable furfuraldehyde(FAL)generation.The optimized Mo_(2)C@ZnIn_(2)S_(4) photocatalyst exhibits 24.1-fold improved H_(2)-yield and a superior FAL-production rate(11.33 mmol g^(−1) h^(−1))compared to blank ZnIn_(2)S_(4),and is also superior to Pt/ZnIn_(2)S_(4) and many previously reported photocatalysts.The boosted photocatalytic redox activity could be attributed to the synergistic effect of the distinctive hierarchical core–shell structure and the non-noble-metal cocatalyst Mo_(2)C,which results in a tightcontact heterointerface,a large specific surface area,abundant electron transport channels,and separate oxidation and reduction sites,thereby prominently promoting spatial photocarrier separation and migration kinetics.This study provides a deeper insight into the rational design of highly efficient bifunctional photocatalysts to steer photocarrier flows for the collaborative reactions of H_(2) evolution and biomass conversion.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.21571162).
文摘Integrating the photocatalytic evolution of clean fuel hydrogen(H_(2))and high value-added products in a cooperative photoredox system is highly indispensable to achieve green and eco-sustainable development.Herein,an exquisite bifunctional core–shell Mo_(2)C@ZnIn_(2)S_(4) Schottky heterojunction is judiciously designed and constructed to simultaneously exploit photoexcited electron–hole pairs,achieving H_(2) production coupled with valuable furfuraldehyde(FAL)generation.The optimized Mo_(2)C@ZnIn_(2)S_(4) photocatalyst exhibits 24.1-fold improved H_(2)-yield and a superior FAL-production rate(11.33 mmol g^(−1) h^(−1))compared to blank ZnIn_(2)S_(4),and is also superior to Pt/ZnIn_(2)S_(4) and many previously reported photocatalysts.The boosted photocatalytic redox activity could be attributed to the synergistic effect of the distinctive hierarchical core–shell structure and the non-noble-metal cocatalyst Mo_(2)C,which results in a tightcontact heterointerface,a large specific surface area,abundant electron transport channels,and separate oxidation and reduction sites,thereby prominently promoting spatial photocarrier separation and migration kinetics.This study provides a deeper insight into the rational design of highly efficient bifunctional photocatalysts to steer photocarrier flows for the collaborative reactions of H_(2) evolution and biomass conversion.
