In situ synthesis of highly dispersed Co–N–C catalysts with carbon-coated sandwich structures based on defect anchoring

Autor:	Zhigang Liu, Lushuang Zhang, Suisheng Li, Shanshan Jie
Rok vydání:	2020
Předmět:	inorganic chemicals chemistry.chemical_element General Chemistry Ethylbenzene Catalysis chemistry.chemical_compound symbols.namesake chemistry X-ray photoelectron spectroscopy Chemical engineering Materials Chemistry symbols Graphite Raman spectroscopy Dispersion (chemistry) Cobalt Carbon
Zdroj:	New Journal of Chemistry. 44:5404-5409
ISSN:	1369-9261 1144-0546
DOI:	10.1039/d0nj00213e
Popis:	Highly dispersed Co–N–C catalysts were successfully prepared via a defect strategy to anchor metal atoms with a carbon coating. The catalysts showed remarkable catalytic performance under mild conditions (a yield of 97.0% for ethylbenzene oxidation). Meanwhile, BET, TEM, XRD, Raman spectroscopy and XPS studies were employed to investigate the as-prepared catalysts. The results revealed that the unique structure was conducive to producing more defects in carbon, increasing the number of active sites and enhancing the dispersion of cobalt. The outstanding catalytic performance of the catalysts was attributed to the synergy effect of the special structure and the Co–N, pyridine nitrogen and graphite nitrogen species.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a8c670208ad1f74b062f5521c209a2b https://doi.org/10.1039/d0nj00213e Zobrazit plný text záznamu