In this work, the tuning of piezoelectric and energy-harvesting are realized in solvothermal synthesized Cl doped ZnO nanorods (NRs), which is designed to boost the coupling effect of piezo-photocatalysis for dye decomposition. For the optimal sample 5%-Cl-ZnO, the coupling constant is about 24.4 times greater than that of pure ZnO, which is benefited from the synergistic effect of the increased radial piezoelectric properties and the superiority of nanorods structure. Optimal 5%-Cl-ZnO NRs not only maintains high migration efficiency for photo-generated carriers in the axial direction, but also separate more thoroughly and transmit faster in the radial direction. This work clearly demonstrates a high correlation between piezoelectricity and coupling effect of piezo-photocatalysis, and provides a new strategy for optimizing the transport of photogenerated carriers in 1D photocatalyst.

在这项工作中，在溶剂热合成的Cl掺杂的ZnO纳米棒（NRs）中实现了压电和能量收集的调谐，旨在增强压电光催化对染料分解的耦合作用。对于最佳样品5％-Cl-ZnO，其耦合常数约为纯ZnO的24.4倍，这得益于径向压电性能增强和纳米棒结构优越性的协同效应。最佳的5％-Cl-ZnO NRs不仅在轴向上保持了光生载流子的高迁移效率，而且可以更彻底地分离并在径向上更快地传输。这项工作清楚地说明了压电与压电光催化的耦合效应之间的高度相关性，