Direct electrochemical identification of rare microscopic catalytic active sites. Issue 16 (6th February 2023)

• Record Type: Journal Article
• Authors: Bentley, Cameron L.; Gaudin, Lachlan F.; Kang, Minkyung
• Is Part Of: Chemical communications. Volume 59:Issue 16(2023)
• Page Start: 2287
• Page End: 2290
• Publication Date: 2023-02-06
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc06316f
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Local voltammetric analysis (combined with a new data processing protocol) in a scanning electrochemical droplet cell format is used to directly identify previously unseen regions of elevated electrocatalytic activity on the basal plane of 2H-MoS2 . 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.