Analysis of forming process of nitrogen-doped carbon catalyst derived from Fe 1,10-phenanthroline compound and its oxygen reduction reaction activity

Autor:	Kenji Yamaga, Takaaki Mizukami, Jun Kawaji, Shuichi Suzuki, Takao A. Yamamoto, Taigo Onodera
Rok vydání:	2014
Předmět:	Chemistry Carbonization Process Chemistry and Technology Phenanthroline Inorganic chemistry chemistry.chemical_element General Chemistry Nitrogen Catalysis chemistry.chemical_compound Chemical state X-ray photoelectron spectroscopy Carbon Pyrolysis
Zdroj:	Catalysis Communications. 43:66-71
ISSN:	1566-7367
DOI:	10.1016/j.catcom.2013.09.011
Popis:	The pyrolysis behavior of iron 1,10-phenanthroline compound, the change of crystalline structure of iron in the iron 1,10-phenanthroline compound, and nitrogen chemical state of nitrogen doped carbon catalyst derived from iron 1,10-phenanthroline compound were investigated to clarify the process of improvement of oxygen reduction reaction (ORR) activity on nitrogen-doped carbon catalyst by TGA, EGA-MS, HT-XRD, XRD, and XPS technique. The ORR activity drastically improved at a synthesis temperature of 700 °C, and was the highest at a synthesis temperature of 800 °C. But the ORR activity significantly dropped at a synthesis temperature of 900 °C. This low ORR activity of NC-900 is probably due to the increase of quaternary nitrogen ratio with progression of excessive carbonization, and the quaternary nitrogen to pyridine-like nitrogen ratio might be an important factor for improvement of the ORR activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b210fe0b30a57e6fbf1d16a8d8326ddd https://doi.org/10.1016/j.catcom.2013.09.011 Zobrazit plný text záznamu Full Text from ScienceDirect