摘要
Enhancing spatial charge separation is an efficient strategy for the improvement of photocatalytic performance. Herein, an ammonia synthesis approach was proposed with an in-situ grown ternary GO/MoS 2 /Ag 3 PO 4 Z-scheme heterostructure photocatalytic system to promote spatial charge separation at surface & interface. Owing to the decent electrical and thermal conductivity properties of GO, ternary photocatalyst delivered evidently enlarged surface area, promoted spatial charges separation and significantly enhanced N 2 photo-fixation efficiency under irradiation of visible light. Through the synergistic effect of electron transportation on GO and the efficient separation of electron-hole pairs on heterojunction, the transportation and separation of photo-generated charges can be realized on both surface and interface, leading to better harvest and utilization of light illumination. The possible Z-scheme heterostructure mechanism for N 2 photo-fixation reaction was explored, which not only offers a new approach for design of heterostructure photocatalysis system but also provides a novel strategy for enhanced spatial charges separation.
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