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

文献信息

发布日期 2023-08-08

DOI 10.1039/D3DT02172F

影响因子 4.39

作者

Sorawich Pimu, Nuttapon Yodsin, Sirawee Maneewan, Jaruwan Kanthachan, Supawadee Namuangruk, Kanokwan Kongpatpanich

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摘要

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

CiteScore: 6.6

自引率: 11.4%

年发文量: 1868

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.

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

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