A facile approach for the preparation of Au nanorod/ZnO nanodisks (AuNR/ZnONDKs) through in situ nucleation and growth of ZnO in AuNR colloidal solution was developed. This is the first report of AuNRs modified on the ZnO surface. Furthermore, the aspect ratios of AuNRs in nanohybrids of AuNR/ZnONDKs were also tuned to achieve tunable and broad LSPR bands for an optimized photocatalytic performance. All of the resultant AuNR/ZnONDK nanohybrids with exposed AuNRs exhibit much higher photocatalytic activity and photocurrent generation compared to commercial ZnO (C-ZnO). In particular, AuNR-707/ZnONDKs express a swift and steady photocurrent of 0.33 mA cm⁻², which is 16.5 times higher than the photocurrent generated by C-ZnO. The facile approach presented here opens up a new avenue for the rational design and preparation of high-performance photocatalysts for the future applications in both environmental purification and photoelectric conversion.

中文翻译：

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用金纳米棒修饰的ZnO纳米盘可增强光电流产生和光催化活性†

开发了一种通过在AuNR胶体溶液中原位成核和生长ZnO制备Au纳米棒/ ZnO纳米盘（AuNR / ZnONDKs）的简便方法。这是在ZnO表面改性的AuNRs的首次报道。此外，还对AuNR / ZnONDKs纳米杂化物中AuNRs的长宽比进行了调整，以实现可调谐且宽的LSPR带，从而优化了光催化性能。与商业化的ZnO（C-ZnO）相比，所有暴露的AuNRs所产生的所有AuNR / ZnONDK纳米杂化物均具有更高的光催化活性和光电流产生能力。特别地，AuNR-707 / ZnONDKs表现出0.33 mA cm ^-2的快速而稳定的光电流，这是C-ZnO产生的光电流的16.5倍。本文介绍的简便方法为合理设计和制备高性能光催化剂开辟了一条新途径，以供将来在环境净化和光电转化中应用。