电催化剂
催化作用
材料科学
纳米技术
惰性
原子单位
纳米尺度
小旋翼机
GSM演进的增强数据速率
曲面(拓扑)
化学物理
化学工程
化学
电化学
复合材料
聚合物
有机化学
物理化学
电极
工程类
几何学
物理
电信
量子力学
计算机科学
数学
共聚物
作者
Jakob Kibsgaard,Zhebo Chen,Benjamin N. Reinecke,Thomas F. Jaramillo
出处
期刊:Nature Materials
[Springer Nature]
日期:2012-10-07
卷期号:11 (11): 963-969
被引量:2883
摘要
Controlling surface structure at the atomic scale is paramount to developing effective catalysts. For example, the edge sites of MoS(2) are highly catalytically active and are thus preferred at the catalyst surface over MoS(2) basal planes, which are inert. However, thermodynamics favours the presence of the basal plane, limiting the number of active sites at the surface. Herein, we engineer the surface structure of MoS(2) to preferentially expose edge sites to effect improved catalysis by successfully synthesizing contiguous large-area thin films of a highly ordered double-gyroid MoS(2) bicontinuous network with nanoscaled pores. The high surface curvature of this catalyst mesostructure exposes a large fraction of edge sites, which, along with its high surface area, leads to excellent activity for electrocatalytic hydrogen evolution. This work elucidates how morphological control of materials at the nanoscale can significantly impact the surface structure at the atomic scale, enabling new opportunities for enhancing surface properties for catalysis and other important technological applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI