Application of Z-scheme heterojunction systems toward mimicking natural photosynthesis is an efficient methodology to improve solar energy conversion. Herein, we successfully develop a Z-scheme heterojunction photocatalyst by using Au nanoparticles as electron mediator to couple ferroelectric-BaTiO₃ nanowires and g-C₃N₄. This rationally constructed Z-scheme system with the extra surface plasmon resonance (SPR) effect of Au nanoparticles and ferroelectricity of BaTiO₃ shows the significantly enhanced generation and separation efficiency of photogenerated carriers and the high reduction ability of elections. Accordingly, it exhibits the high photocatalytic performance for both H₂ evolution and RhB degradation. In particular, its H₂ evolution rate is about 18 times to that of g-C₃N₄ alone. The reasonable interfacial charge transfer mechanism discovered in this work provides a new approach to understanding and designing other efficient Z-scheme heterojunction systems.

Z方案异质结系统在模拟自然光合作用方面的应用是提高太阳能转化率的有效方法。在这里，我们成功地开发了Z方案异质结光催化剂，通过使用Au纳米粒子作为电子介体，将铁电BaTiO ₃纳米线和gC ₃ N ₄耦合。这种合理构造的Z方案系统具有Au纳米粒子的表面等离子体激元共振（SPR）效应和BaTiO _3的铁电性，表明光生载流子的产生和分离效率显着提高，并且选举的还原能力高。因此，它对两种H ₂都表现出高的光催化性能。进化和RhB降解。尤其是，其H ₂析出速率约为单独gC ₃ N _4的18倍。在这项工作中发现的合理的界面电荷转移机制为理解和设计其他有效的Z型异质结系统提供了一种新方法。