Titanium suboxides, such as the Magnéli-phase Ti_xO_2x–1, have attracted much attention as candidates of stable electrode materials because of their high conductivity and stability. The synthesis of porous titanium suboxides with high surface area without the formation of residual carbon is important to achieve active and stable electrode materials. Here, the synthesis of mesoporous Magnéli-phase Ti₆O₁₁ without residual carbon is demonstrated for the first time by templating method, using a colloidal crystal template. Highly ordered mesoporous Magnéli-phase Ti₆O₁₁ was obtained by reduction of TiO₂ framework within the template under H₂ flow at 800 °C, followed by the removal of template with a sodium hydroxide solution. The BET surface area was 11 m²/g. The mesoporous Ti₆O₁₁ loaded with Pt nanoparticles deposited by the coaxial arc plasma deposition showed oxygen reduction reaction activity comparable to those of commercial Pt/C, though oxide support often reduces catalytic activity of supported Pt nanoparticles. Consequently, the mesoporous Ti₆O₁₁ is useful as a carbon-free electrochemical support material for various applications.

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诸如Magnéli相Ti _x O _{2 x –1之}类的钛氧化物因其高电导率和稳定性而成为稳定电极材料的候选者，引起了广泛关注。具有高表面积的多孔低价钛氧化物的合成而不形成残留碳对于获得活性和稳定的电极材料很重要。在此，使用胶体晶体模板通过模板法首次证明了无残留碳的介孔马格尼利相Ti ₆ O ₁₁的合成。通过还原TiO ₂获得了高度有序的介孔Magnéli相Ti ₆ O ₁₁在800°C的H ₂流动下，模板内的骨架被去除，然后用氢氧化钠溶液去除模板。BET表面积为11m ² / g。尽管氧化物载体通常会降低负载的Pt纳米颗粒的催化活性，但通过共轴电弧等离子体沉积法沉积的负载有Pt纳米颗粒的中孔Ti ₆ O _11的氧还原反应活性与市售Pt / C相当。因此，介孔的Ti ₆ O ₁₁可用作各种应用的无碳电化学载体材料。

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