4.8 Article

Electrochemical Heterogeneity at the Nanoscale: Diffusion to Partially Active Nanocubes

期刊

JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 13, 期 33, 页码 7689-7693

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.2c01922

关键词

-

向作者/读者索取更多资源

This study investigates the effect of heterogeneity in activity on the response of nanoparticles and reveals that the number of active faces is not directly proportional to the flux, but is influenced by the activity of nearby faces.
How does heterogeneity in activity affect the response of nanoparticles? This problem is key to studying the structure-activity relationship of new electrocatalytic materials. However, addressing this problem theoretically and to a high degree of accuracy requires the use of three-dimensional electrochemical simulations that have, until recently, been challenging to undertake. To start to probe this question, we investigate how the diffusion-limited flux to a cube changes as a function of the number of active faces. Importantly, it is clearly demonstrated how the flux is not linearly proportional to the active surface area of the material due to the faces of the cube not having diffusional independence, meaning that the flux to each face reflects the activity or not of nearby faces. These results have dear and important implications for experimental work that uses a correlation-based approach to evidence changes in activity at the nanoscale.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据