Herein, visible-light driven BiOBr nanoplates with fully exposed (001) facet are for the first time adopted as Pt nanoparticles support for electrocatalytic methanol oxidation. We found that, as Pt nanoparticles support, high specific surface area of BiOBr (001) nanoplates not only can be driven by visible-light to produce photogenerated electrons and holes, but also benefit to the dispersion of Pt nanoparticles. When Pt–BiOBr (001) nanocomposites electrode exposed into the simulated solar light irradiation and visible-light irradiation, it exhibits 5.2 and 2.4 times higher electrocatalytic activities for methanol oxidation than dark condition, respectively. Synergistic effects between electrocatalytic and photocatalytic methanol oxidation as well as the efficient interfacial charger separation in Pt–BiOBr (001) electrode contribute to the enhanced electrocatalytic methanol oxidation activities. The present results suggest that BiOBr (001) nanoplates can be used as photo-assisted Pt nanoparticles support in direct methanol fuel cell.

在本文中，具有全暴露的（001）面的可见光驱动的BiOBr纳米板首次被用作Pt纳米颗粒载体，用于电催化甲醇氧化。我们发现，作为Pt纳米颗粒的载体，BiOBr（001）纳米板的高比表面积不仅可以由可见光驱动以产生光生电子和空穴，而且还有益于Pt纳米颗粒的分散。当Pt-BiOBr（001）纳米复合电极暴露在模拟的太阳光照射和可见光照射下时，其甲醇氧化的电催化活性分别比黑暗条件下高5.2和2.4倍。在Pt–BiOBr（001）电极中，电催化和光催化甲醇氧化之间的协同作用以及有效的界面电荷分离有助于提高电催化甲醇的氧化活性。目前的结果表明，BiOBr（001）纳米板可用作直接甲醇燃料电池中的光辅助Pt纳米颗粒载体。