articleNature MaterialsJan 24, 2025HYBRID OA

Revealing catalyst restructuring and composition during nitrate electroreduction through correlated operando microscopy and spectroscopy

AYAram YoonLBLichen BaiFYFengli YangFFFederico FrancoCZChao Zhan

Fritz Haber Institute of the Max Planck Society · Shell (Netherlands) · +4 more institutions

PubMed
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Abstract

Abstract Electrocatalysts alter their structure and composition during reaction, which can in turn create new active/selective phases. Identifying these changes is crucial for determining how morphology controls catalytic properties but the mechanisms by which operating conditions shape the catalyst’s working state are not yet fully understood. In this study, we show using correlated operando microscopy and spectroscopy that as well-defined Cu 2 O cubes evolve under electrochemical nitrate reduction reaction conditions, distinct catalyst motifs are formed depending on the applied potential and the chemical environment. By further matching the timescales of morphological changes observed via electrochemical…

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97
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Topics & keywords

Topics
Keywords
  • Catalysis
  • Raman spectroscopy
  • Transmission electron microscopy
  • Electrochemistry
  • Spectroscopy
  • Chemical engineering
  • Materials science
  • Selectivity
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