Issue 16, 2023

Direct electrochemical identification of rare microscopic catalytic active sites

Abstract

Local voltammetric analysis with a scanning electrochemical droplet cell technique, in combination with a new data processing protocol (termed data binning and trinisation), is used to directly identify previously unseen regions of elevated electrocatalytic activity on the basal plane (BP) of molybdenum disulfide (2H-MoS2). This includes BP-like structures with hydrogen evolution reaction activities approaching that of the edge plane and rare nanoscale electrocatalytic “hot-spots” present at an areal density of approximately 0.2–1 μm−2. Understanding the nature of (sub)microscopic catalytic active sites, such as those identified herein, is crucial to guide the rational design of next-generation earth-abundant materials for renewable fuels production.

Graphical abstract: Direct electrochemical identification of rare microscopic catalytic active sites

Supplementary files

Article information

Article type
Communication
Submitted
22 nov. 2022
Accepted
27 janv. 2023
First published
30 janv. 2023

Chem. Commun., 2023,59, 2287-2290

Direct electrochemical identification of rare microscopic catalytic active sites

C. L. Bentley, L. F. Gaudin and M. Kang, Chem. Commun., 2023, 59, 2287 DOI: 10.1039/D2CC06316F

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