Issue 42, 2023

Impact of exposed crystal facets on oxygen reduction reaction activity in zeolitic imidazole frameworks

Abstract

ZIF-67 is a representative type of metal–organic framework (MOF) developed for the oxygen reduction reaction (ORR) owing to its robust structure in alkaline electrolytes and the presence of the redox-active Co2+ species in the structure. In this work, the improvement of the ORR electrolytic performance of ZIF-67 in its pure phase by optimization of its crystal morphology and crystal facets has been presented. ZIF-67 nanocubes exhibit higher ORR activity than their bulk crystals. The enriched (100) facet in the nanocube crystals provides a higher number of exposed Co2+ sites resulting in improved ORR performances. Moreover, DFT study suggests a distinguished mechanism in the (100) facet highlighting the importance of crystal facets in electrochemical performances.

Graphical abstract: Impact of exposed crystal facets on oxygen reduction reaction activity in zeolitic imidazole frameworks

Supplementary files

Article information

Article type
Paper
Submitted
10 jul. 2023
Accepted
04 ag. 2023
First published
08 ag. 2023

Dalton Trans., 2023,52, 15377-15383

Impact of exposed crystal facets on oxygen reduction reaction activity in zeolitic imidazole frameworks

S. Pimu, N. Yodsin, S. Maneewan, J. Kanthachan, S. Namuangruk and K. Kongpatpanich, Dalton Trans., 2023, 52, 15377 DOI: 10.1039/D3DT02172F

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