Impact of exposed crystal facets on oxygen reduction reaction activity in zeolitic imidazole frameworks
文献信息
Sorawich Pimu, Nuttapon Yodsin, Sirawee Maneewan, Jaruwan Kanthachan, Supawadee Namuangruk, Kanokwan Kongpatpanich
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.
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来源期刊
Dalton Transactions
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant. Specific guidance for some areas of our scope is given below.
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