A rational design and precise control over charge carriers transportation in Z-scheme system is favorable for achieving its optimal photocatalytic performance. Herein, a ternary composite Z-scheme photocatalyst with [email protected] selectively deposited on the {010} facets of BiVO₄ was prepared. Due to the fact that the CB edge and VB edge of the {110} facet of BiVO₄ are higher than those of its {010} facet, the photo-generated electrons and holes in well-faceted BiVO₄ transferred to the {010} and {110} facets, respectively. The electrons on the {010} facets of BiVO₄ transferred through Au NPs as the electron mediator to combine with holes of CdS at the interface. Benefiting from the dual-facilitated charge carriers transportation in Z-scheme and well-faceted BiVO₄ crystals, the photocatalytic efficiency of the optimal ternary BiVO₄[email protected] hybrids is 6.11, 3.03 and 2.95 times higher than those of BiVO₄, BiVO₄-Au and BiVO₄-CdS toward Rhodamine B degradation and 1.46 times higher than that of BiVO₄ (random facets)[email protected] toward 4-nonylphenol degradation. This work provides a new insight on rational design of Z-scheme system based on well-faceted nanocrystals for enhancing photocatalytic performance.

Z方案体系中电荷载流子的合理设计和精确控制有利于实现其最佳的光催化性能。在此，制备了具有[电子邮件保护的]选择性沉积在BiVO ₄的{010}面上的三元复合Z-方案光催化剂。由于这样的事实，该CB边缘和BiVO的{110}面的VB边缘₄比其{010}晶面的高，光生电子和空穴在井方位BiVO ₄转移到{010}和{110}构面。BiVO ₄的{010}面上的电子通过Au NPs作为电子介体转移，并与CdS的空穴在界面处结合。得益于Z方案和面面清晰的BiVO ₄晶体中双电荷载流子的传输，最佳三元BiVO ₄ [受电子邮件保护]杂化物的光催化效率分别比BiVO ₄和BiVO高6.11、3.03和2.95倍₄ -Au和BiVO ₄ -CdS对若丹明B的降解作用，比BiVO ₄（无规面）对4-壬基苯酚降解的作用高1.46倍。这项工作为基于良好刻面纳米晶体的Z方案系统的合理设计提供了新的见识，以增强光催化性能。