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A new method is developed for synthesizing Ti₄O₇ supported Ru@Pt core–shell catalyst (Ru@Pt/Ti₄O₇) through pyrolysis followed by microwave irradiation. The purpose is to improve the Ru durability of PtRu from core–shell structure and strong bonding to Ti₄O₇ oxide. In this method, the first step is to co-reduce the mixture of ruthenium precursor and TiO₂ in a H₂ reducing atmosphere under heat-treatment to obtain a Ru core on Ti₄O₇ support, and the second step is to create a shell of platinum via microwave irradiation. Energy dispersive X-ray spectrometry, X-ray Diffraction, High-resolution Scanning Transmission Electron Microscopy with the high-angle annular dark-field method and Electron Energy-Loss Spectroscopy are used to demonstrate that this catalyst with larger particles has a core–shell structure with a Ru core and a Pt shell. Electrochemical measurements show Ru@Pt/Ti₄O₇ catalyst has a higher …