Photoreduction using ferroelectric templates is an emerging green technique for the production of noble-metal nanostructures by a reductant-free process. In this work, anisotropic growth of silver nanostructures is stimulated by a surfactant-assisted photoreduction process on ferroelectric templates. The preferential adsorption of surfactant (polyvinylpyrrolidone) on the specific facets of silver creates the anisotropic growth of nanostructures and thus the formation of silver nanoplates. The surfactant adsorption effects on the nanoparticle morphology and the nanoparticle properties are studied. Their influence levels depend on the ratio of surfactant concentration to precursor concentration. The produced silver nanostructures have superior SERS features, such as the limit of detection of <10⁻⁸ M, the enhancement factor of 2.2 × 10⁹ and Raman intensity enhancement by 8.71 times. The study of anisotropic growth of photoreduced nanoparticles using ferroelectric templates provides a promising prospect to develop green production techniques for versatile anisotropic nanoparticles.

使用铁电模板进行光还原是一种通过无还原剂生产贵金属纳米结构的新兴绿色技术。在这项工作中，在铁电模板上通过表面活性剂辅助的光还原过程来刺激银纳米结构的各向异性生长。表面活性剂（聚乙烯吡咯烷酮）在银特定面上的优先吸附会引起纳米结构的各向异性生长，从而形成银纳米板。研究了表面活性剂对纳米颗粒形态和性能的吸附作用。它们的影响程度取决于表面活性剂浓度与前体浓度的比率。产生的银纳米结构具有卓越的SERS功能，例如<10 ^-8的检出限 M，增强因子为2.2×10 ⁹，拉曼强度增强为8.71倍。使用铁电模板对光还原纳米粒子的各向异性生长的研究为开发多功能各向异性纳米粒子的绿色生产技术提供了有希望的前景。