In this paper, RGO/PANI/Pt@FeO_x with a three-dimensional multilayer structure is successfully prepared by the one-pot method, in which the introduction of PANI prevents GO from agglomerating, and also plays a crucial supporting role in the three-dimensional multilayer structure. SEM and TEM images confirm that the catalyst has a three-dimensional multilayer structure, and Pt nanoparticles are uniformly dispersed on the surface of PANI/RGO, with an average particle size of 3.2 nm. The electrochemical evaluation clearly shows that the mass activity of 3D multilayer RGO/PANI/Pt@FeO_x (1.573 Amg⁻¹_Pt) is three times than that of Pt/C. After 3600 s, it retained mass activity is seven times than that of Pt/C. In addition, 3D multilayer RGO/PANI/Pt@FeO_x catalyst has better CO tolerance than Pt-RGO/PANI, Pt/C and Pt-RGO. These results mainly originate from that the three-dimensional multilayer structure provides a larger specific surface area, N species in PANI can be conducive to the uniform dispersion of platinum, and the existence of FeO_x improves the catalytic efficiency of Pt and the rate of water splitting due to bi-functional mechanism, consequently enhancing the CO tolerance of catalyst. Thereby, 3D multilayer RGO/PANI/Pt@FeO_x can be utilized as a promising methanol oxidation catalyst.

本文采用一锅法成功制备了具有三维多层结构的RGO/PANI/Pt@FeO _x ，其中 PANI 的引入防止了 GO 的团聚，同时在三者中也起到了至关重要的支撑作用。维多层结构。SEM和TEM图像证实催化剂具有三维多层结构，Pt纳米颗粒均匀分散在PANI/RGO表面，平均粒径为3.2 nm。电化学评估清楚地表明，3D 多层 RGO/PANI/Pt@FeO _x (1.573 Amg ^-1 _Pt ) 的质量活性是 Pt/C 的三倍。3600 s 后，它保留的质量活度是 Pt/C 的 7 倍。此外，3D 多层 RGO/PANI/Pt@FeO_x催化剂比 Pt-RGO/PANI、Pt/C 和 Pt-RGO 具有更好的 CO 耐受性。这些结果主要源于三维多层结构提供了更大的比表面积，PANI中的N物种有利于铂的均匀分散，FeO _x的存在提高了Pt的催化效率和出水率。由于双功能机制而分裂，从而提高了催化剂的CO耐受性。因此，3D 多层 RGO/PANI/Pt@FeO _x可用作有前景的甲醇氧化催化剂。