Platinum and platinum-based electrocatalysts for the methanol oxidation reaction (MOR) are commonly used as the anode material in direct methanol fuel cells (DMFCs). Photo-oxidation promoted by ultraviolet and visible light is a promising method to increase the catalytic activity of DMFC anode electrocatalysts. Photocatalytic and electrocatalytic methanol oxidation can be coupled by addition of TiO₂, a semiconductor photocatalyst, to Pt. In the presence of TiO₂, an increase of the MOR activity of Pt-based electrocatalysts takes place also in dark conditions. This review deals with the methanol photo-oxidation on Pt/TiO₂ catalysts, highlighting the effect of TiO₂ morphology, nanoparticles, or 1D nanostructures, on the MOR activity under illumination. Comparison of reaction mechanisms in the presence and the absence of light are presented, and the roles of Pt and TiO₂ during electrochemical and photochemical reactions are discussed.

用于甲醇氧化反应（MOR）的铂和铂基电催化剂通常用作直接甲醇燃料电池（DMFC）中的阳极材料。紫外线和可见光促进的光氧化是增加DMFC阳极电催化剂催化活性的一种有前途的方法。可以通过向Pt中添加半导体光催化剂TiO ₂来进行光催化和电催化甲醇氧化反应。在TiO ₂的存在下，在黑暗条件下，Pt基电催化剂的MOR活性也会增加。这篇综述涉及甲醇在Pt / TiO ₂催化剂上的光氧化，强调了TiO ₂的作用。形态，纳米颗粒或一维纳米结构在光照下对MOR活性的影响。比较了在有光和无光条件下的反应机理，并讨论了Pt和TiO ₂在电化学和光化学反应中的作用。