Three-dimensional flexible Pt-promoted graphene aerogel monolith is developed through a one-step solvothermal process as a versatile catalyst for removal of CO, HCHO, and C₂H₄ at room temperature. In this synthesis, ethylene glycol was employed as both the reducing agent and the solvent which could accelerate the in situ reduction of GO and metal ions during the solvothermal process, leading to the assembly and cross-linking of GO to form a three-dimensional (3D) network. Therefore, the obtained Pt-promoted graphene aerogel monolith exhibits an interconnected, honeycomb-like 3D porous framework with highly dispersed Pt (0) species, making it ideal for catalytic oxidation. Such monolith shows a high performance for the catalytic oxidation of CO, HCHO, and C₂H₄, with 100% conversion at room temperature, with an excellent stability longer than 72 h. These results demonstrate that the flexible Pt-promoted graphene aerogel monolith gives significance on catalytic oxidation, which could be applied in eliminating indoor air pollution.

中文翻译：

---

柔性Pt促进石墨烯气凝胶单块：室温去除一氧化碳，甲醛和乙烯的多功能催化剂

三维柔性Pt促进的石墨烯气凝胶整料是通过一步溶剂热法开发的，可作为在室温下去除CO，HCHO和C ₂ H ₄的通用催化剂。在该合成中，乙二醇既用作还原剂又用作溶剂，可以在溶剂热过程中加速GO和金属离子的原位还原，从而导致GO的组装和交联形成三维（ 3D）网络。因此，获得的Pt促进的石墨烯气凝胶整料表现出具有高度分散的Pt（0）物种的相互连接的蜂窝状3D多孔骨架，使其非常适合催化氧化。这样的整体显示出对CO，HCHO和C ₂ H的催化氧化的高性能。₄，在室温下100％转化，具有超过72小时的出色稳定性。这些结果表明，Pt增强的柔性石墨烯气凝胶整体材料对催化氧化具有重要意义，可用于消除室内空气污染。