Original design of nitrogen-doped carbon aerogels from sustainable precursors: application as metal-free oxygen reduction catalysts

被引:126
作者
Brun, Nicolas [1 ]
Wohlgemuth, Stephanie A. [1 ]
Osiceanu, Petre [2 ]
Titirici, Magdalena M. [3 ]
机构
[1] Max Planck Inst Colloids & Interfaces, D-14476 Golm, Germany
[2] Inst Phys Chem Ilie Murgulescu, R-060021 Bucharest, Romania
[3] Queen Mary Univ London, Sch Mat Sci & Engn, London E1 4NS, England
关键词
HYDROTHERMAL CARBONS; STRUCTURAL-PROPERTIES; ORGANIC AEROGELS; CARBONIZATION; ELECTROCATALYSTS; OXIDATION; STORAGE; ENERGY; MONOSACCHARIDES; PERFORMANCE;
D O I
10.1039/c3gc40904j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A new sustainable approach based on the hydrothermal carbonization of biomass-derivatives is reported for the synthesis of nitrogen-doped carbon-based aerogels. The catalyst-free hydrothermal treatment of both carbohydrate-based derivatives, i.e. glucose, D-glucosamine and/or N-acetyl-D-glucosamine, and phenolic compounds, i.e. phloroglucinol and/or cyanuric acid, led to highly porous monolithic gels. After pyrolysis under an inert atmosphere, conductive N-doped carbon aerogels were obtained, displaying nitrogen-doping levels of 3-5 wt% and BET surface areas of up to 450 m(2) g(-1). These original materials showed the first promising results as electrocatalysts for the oxygen reduction reaction and are expected to be used in a wide variety of fields, including for advanced energy conversion and storage devices.
引用
收藏
页码:2514 / 2524
页数:11
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