Pt nanoparticles grown on 3D RuO2-modified graphene architectures for highly efficient methanol oxidation
Pt nanoparticles grown on 3D RuO2-modified graphene architectures for highly efficient methanol oxidation
复制标题
在 3D RuO2 改性石墨烯结构上生长的 Pt 纳米颗粒可实现高效甲醇氧化
DOI：
10.1039/c6ta10548c
复制
发表时间：
2017-03-07
影响因子：
11.9
通讯作者：
Wu, Yuping
中科院分区：
文献类型：
--
作者：
Huang, Huajie;Zhu, Jixin;Wu, Yuping
用于甲醇氧化反应的铂基电极催化剂是直接甲醇燃料电池技术的核心，但其高成本和短寿命极大地阻碍了其大规模的商业应用。在此，我们提出了一种简单的自组装方法来构建由超细铂纳米粒子、氧化钌和石墨烯气凝胶组成的三维多孔电催化剂。得益于独特的结构特征和显著的协同效应，所得到的3D Pt/RuO2/石墨烯结构具有惊人的高活性、强抗中毒能力和可靠的甲醇电氧化稳定性，具有替代传统Pt/碳催化剂的巨大潜力。这项研究可能为在不久的将来开发各种3D金属氧化物修饰的石墨烯支撑催化剂提供新的见解，具有广泛的应用前景。
Platinum-based electrode catalysts for the methanol oxidation reaction are at the heart of direct methanol fuel cell technology, while their high cost and short lifespan have greatly hindered their large-scale commercial application. Herein, we put forward a facile self-assembly approach to construct 3D porous electrocatalysts made from ultrafine Pt nanoparticles, RuO2 and graphene aerogels. Benefiting from the unique textural features as well as remarkable synergetic effect, the resulting 3D Pt/RuO2/graphene architectures possess exceptional electrocatalytic performance in terms of surprisingly high activity, strong anti-poisoning ability and reliable stability toward methanol electrooxidation, holding great potential as substitutes for conventional Pt/carbon catalysts. This study may offer new insights for the development of various 3D metal oxide-modified graphene supported catalysts for a wide range of applications in the near future.