4.8 Article

Localized Electrosynthesis and Subsequent Electrochemical Mapping of Catalytically Active Metal-Organic Frameworks

期刊

ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 19, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202112517

关键词

alternative fuels; electrocatalysis; electrodeposition; hydrogen evolution reaction; metal-organic frameworks

资金

  1. European Research Council (ERC) under the European Union [947655]
  2. Israel Science Foundation (ISF) [306/18]
  3. European Research Council (ERC) [947655] Funding Source: European Research Council (ERC)

向作者/读者索取更多资源

Metal-organic frameworks (MOFs) have great potential as catalytic materials in electrochemical energy conversion reactions. This study used scanning electrochemical microscopy (SECM) to perform localized electrosynthesis of MOFs and analyze their catalytic hydrogen evolution reaction activity. The results shed light on the operation principles of electroactive MOFs and their potential use in alternative fuel production schemes.
In recent years, metal-organic frameworks (MOFs) have shown great potential to be used as porous, high surface area catalytic materials capable of driving electrochemical energy conversion reactions. However, further improvement in their electrocatalytic performance necessitates methods to couple high-throughput MOF synthesis and their subsequent electrochemical activity characterization. In this work, scanning electrochemical microscopy (SECM) is employed to perform a localized, micron-scale electrosynthesis of two types of MOFs, Al-2(OH)(2)-TCPP, and HKUST-1. SECM is also utilized to analyze the electrocatalytic hydrogen evolution reaction activity of the as-prepared MOF micropatterns, via i) substrate-generation tip-collection mode to map the MOF's electrochemical reactivity, and ii) redox competition mode, to accurately extract the MOF's catalytic onset potential. Thus, the presented method provides a means to shed light on the operation principles of electroactive MOFs, toward their future incorporation in alternative fuel-production schemes.

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