In this report, the Ni/C sample was successfully prepared at room temperature (RT) by depositing nickel related species on carbon black by a chemical liquid reduction method with hydrazine hydrate as reducing agent, Pt/C was synthesized via a wetness impregnation method. And Pt was supported on Ni/C by galvanic replacement reaction to form PtNi/C bimetallic nanocatalyst. By comparing the catalytic performance of different catalysts for 1-nitronaphthalene hydrogenation, it could be found that the PtNi/C bimetallic nanocatalyst showed higher catalytic activity than monometallic nanocatalysts (Pt/C and Ni/C), exhibiting 100 % conversion of 1-nitronaphthalene, 100 % selectivity to 1-naphthylamine and turnover frequency of 194.9 h⁻¹ under mild reaction conditions (40 min, 30 °C, 3.0 MPa H₂). The as-prepared catalysts were characterized by XRD, XPS, HAADF-STEM, STEM-EDX mapping and line-scanning, TG, HRTEM and H₂-TPD, which proved that PtNi/C showed most outstanding catalytic behaviors in 1-nitronaphthalene selective hydrogenation due to high dispersion of platinum, the nanostructure of Pt-on-Ni-on-Ni(OH)₂ and thus synergism effect among Pt, Ni and Ni(OH)₂.

在此报告中，通过化学水还原法，以水合肼为还原剂，通过在炭黑上沉积镍相关物质，成功地在室温（RT）下制备了Ni / C样品，并通过湿法浸渍法合成了Pt / C。通过电置换反应将Pt负载在Ni / C上形成PtNi / C双金属纳米催化剂。通过比较不同催化剂对1-硝基萘加氢的催化性能，可以发现PtNi / C双金属纳米催化剂显示出比单金属纳米催化剂（Pt / C和Ni / C）更高的催化活性，表现出100％的1-硝基萘转化率。在温和的反应条件下（40分钟，30°C，3.0 MPa H _2）对1-萘胺的选择性为100％，周转频率为194.9 h ^-1）。通过XRD，XPS，HAADF-STEM，STEM-EDX作图和线扫描，TG，HRTEM和H ₂ -TPD对所制备的催化剂进行表征，证明PtNi / C在1-硝基萘选择性催化中表现出最优异的催化行为。由于铂的高度分散，Ni-on-Ni（OH）₂上的Pt-Ni-的纳米结构以及因此在Pt，Ni和Ni（OH）₂之间的协同效应而发生氢化。