Nanostructured Au₃₃Pd₆₇ alloy films were fabricated on glass using one-step air plasma DC magnetron sputtering. The films exhibited highly sensitive detection of dye molecules (RhB and CV) by the surface-enhanced Raman scattering (SERS). The synthesized films also showed good catalytic properties for the reduction in 4-nitrophenol at pH ≈ 9.8. Such unique characteristic of the films was linked to the evolution of nanostructure, which can be controlled simply by the sputtering time. At the shorter sputtering time (10 and 20 s), the film was composed of isolated particles. By increasing the sputtering time (30 and 40 s), agglomeration of such nanoparticles resulted in the formation of the partially connected island nanostructures (about 38 nm) which can be confirmed by TEM and electrical resistivity measurement. The detection limit of 1 × 10^–12 M RhB and 1 × 10^–8 M CV with an enhancement factor of 7 × 10⁷ and 3.3 × 10⁴, respectively, was achieved over the film synthesized at the sputtering time of 30 s. The high sensitivity of this film can be ascribed to the strong electromagnetic field at the junction spots formed between the two adjacent islands. Moreover, this film has a slightly lower SERS, and better catalytic properties, in contrast to Au (30 s) film. Finally, the film providing efficient SERS enhancement is not the most active catalyst. Unlike the SERS, the catalytic activity depends highly on the amount of AuPd deposited.

纳米金₃₃ Pd ₆₇使用一步空气等离子体DC磁控管溅射法在玻璃上制造合金膜。薄膜通过表面增强拉曼散射（SERS）表现出对染料分子（RhB和CV）的高灵敏度检测。合成的薄膜还显示出在pH≈9.8时还原4-硝基苯酚的良好催化性能。薄膜的这种独特特性与纳米结构的演变有关，可以通过溅射时间简单地控制它。在较短的溅射时间（10和20 s）下，薄膜由孤立的颗粒组成。通过增加溅射时间（30和40 s），此类纳米颗粒的团聚导致形成部分连接的岛状纳米结构（约38 nm），这可以通过TEM和电阻率测量得到确认。检出限为1×10 ^–12在溅射时间为30 s的合成膜上，获得了分别 为7×10 ⁷和3.3×10 ⁴的增强因子的 M RhB和1×10 ^–8 M CV 。该膜的高灵敏度可以归因于在两个相邻岛之间形成的接合点处的强电磁场。此外，与Au（30 s）薄膜相比，该薄膜的SERS稍低，催化性能更好。最后，提供有效SERS增强作用的薄膜不是最活跃的催化剂。与SERS不同，催化活性很大程度上取决于AuPd的沉积量。