石墨烯
单层
石墨
催化作用
材料科学
惰性
氢
纳米技术
纳米尺度
金属
化学物理
化学工程
化学
有机化学
复合材料
工程类
冶金
作者
Pengzhan Sun,Wenqi Xiong,Arpan Bera,Ivan Timokhin,Zhangting Wu,Artem Mishchenko,M. C. Sellers,B. L. Liu,Hui‐Ming Cheng,Eli Janzen,James H. Edgar,I. V. Grigorieva,Shengjun Yuan,A. K. Geǐm
标识
DOI:10.1073/pnas.2300481120
摘要
Graphite is one of the most chemically inert materials. Its elementary constituent, monolayer graphene, is generally expected to inherit most of the parent material's properties including chemical inertness. Here, we show that, unlike graphite, defect-free monolayer graphene exhibits a strong activity with respect to splitting molecular hydrogen, which is comparable to that of metallic and other known catalysts for this reaction. We attribute the unexpected catalytic activity to surface corrugations (nanoscale ripples), a conclusion supported by theory. Nanoripples are likely to play a role in other chemical reactions involving graphene and, because nanorippling is inherent to atomically thin crystals, can be important for two-dimensional (2D) materials in general.
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