Wang Fang, Yang Weimin, Ding Qi, Xing Xinhe, Xu Liguang, Lin Hengwei, Xu Chuanlai, Li Si
International Joint Research Center for Photo-responsive Molecules and Materials, Jiangnan University, Wuxi, Jiangsu, 214122, P.R. China.
International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P.R. China.
Angew Chem Int Ed Engl. 2025 Jan 15;64(3):e202415031. doi: 10.1002/anie.202415031. Epub 2024 Nov 2.
Chiral photocatalytic nanomaterials possess numerous unique properties and hold promise for various applications in chemical synthesis, environmental protection, energy conversion, and photoelectric devices. Nevertheless, it is uncommon to develop effective means to enhance the asymmetric catalytic performances of chiral plasmonic nanomaterials. In this study, a type of L/D-Au@CeO helical nanorods (HNRs) was fabricated by selectively growing CeO on the surface of Au HNRs via a facile wet-chemistry construction method. Chiral Au@CeO HNRs, featuring Au and CeO with spatially separated structures, exhibited the highest photocatalytic performance for N fixation, being 50.80±2.64 times greater than that of Au HNRs. Furthermore, when L-Au@CeO HNRs were exposed to left circularly polarized light (CPL) and D-Au@CeO HNRs were exposed to right CPL, their photocatalytic efficiency was enhanced by 3.06±0.06 times compared to the samples illuminated with the opposite CPL, which can be attributed to the asymmetrical generation of hot carriers upon CPL excitation. This study not only offers a simple approach to enhance the photocatalytic performance of chiral plasmonic nanomaterials but also demonstrates the potential of chiral plasmonic materials for application in specific photocatalytic reactions, such as N fixation.
手性光催化纳米材料具有许多独特的性质，在化学合成、环境保护、能量转换和光电器件等各种应用中具有广阔前景。然而，开发有效方法来提高手性等离子体纳米材料的不对称催化性能并不常见。在本研究中，通过一种简便的湿化学构建方法，在金螺旋纳米棒（HNRs）表面选择性生长二氧化铈，制备了一种L/D-Au@CeO螺旋纳米棒。具有金和二氧化铈空间分离结构的手性Au@CeO HNRs对氮固定表现出最高的光催化性能，比金HNRs高50.80±2.64倍。此外，当L-Au@CeO HNRs暴露于左旋圆偏振光（CPL）且D-Au@CeO HNRs暴露于右旋CPL时，与用相反CPL照射的样品相比，它们的光催化效率提高了3.06±0.06倍，这可归因于CPL激发时热载流子的不对称产生。本研究不仅提供了一种提高手性等离子体纳米材料光催化性能的简单方法，还展示了手性等离子体材料在特定光催化反应（如氮固定）中的应用潜力。
