Direct nitrogen fixation at the edges of graphene nanoplatelets as efficient electrocatalysts for energy conversion.
Direct nitrogen fixation at the edges of graphene nanoplatelets as efficient electrocatalysts for energy conversion.
复制标题
DOI：
10.1038/srep02260
复制
发表时间：
2013
影响因子：
4.6
通讯作者：
Baek, Jong-Beom
中科院分区：
文献类型：
--
作者：
Jeon, In-Yup;Choi, Hyun-Jung;Ju, Myung Jong;Choi, In Taek;Lim, Kimin;Ko, Jaejung;Kim, Hwan Kyu;Kim, Jae Cheon;Lee, Jae-Joon;Shin, Dongbin;Jung, Sun-Min;Seo, Jeong-Min;Kim, Min-Jung;Park, Noejung;Dai, Liming;Baek, Jong-Beom
固氮对于合成许多重要的化学品(例如，化肥、炸药)和所有生命形式的基本构件(例如，DNA和RNA的核苷酸、蛋白质的氨基酸)是必不可少的。然而，直接固氮是具有挑战性的，因为氮(N2)不容易与其他化学品反应。通过干法球磨石墨和氮气，我们发现了一种简单但通用、可扩展和环保的方法，将氮气直接固定在石墨烯纳米小片(GNP)的边缘。石墨质C-−-C键的机械力化学裂解产生的活性碳物种直接与氮气反应，在断裂的边缘形成五元和六元芳环，导致可溶液处理的边缘氮化石墨烯纳米小片(NGNP)在染料敏化太阳能电池和燃料电池中都具有优异的催化性能，以取代传统的铂基催化剂进行能量转换。
Nitrogen fixation is essential for the synthesis of many important chemicals (e.g., fertilizers, explosives) and basic building blocks for all forms of life (e.g., nucleotides for DNA and RNA, amino acids for proteins). However, direct nitrogen fixation is challenging as nitrogen (N2) does not easily react with other chemicals. By dry ball-milling graphite with N2, we have discovered a simple, but versatile, scalable and eco-friendly, approach to direct fixation of N2 at the edges of graphene nanoplatelets (GnPs). The mechanochemical cracking of graphitic C−C bonds generated active carbon species that react directly with N2 to form five- and six-membered aromatic rings at the broken edges, leading to solution-processable edge-nitrogenated graphene nanoplatelets (NGnPs) with superb catalytic performance in both dye-sensitized solar cells and fuel cells to replace conventional Pt-based catalysts for energy conversion.
登录
查看更多内容
影响因子：
4.3
作者：
Song, Bok Joo;Song, Hae Min;Kim, Hwan Kyu
通讯作者：
Kim, Hwan Kyu
影响因子：
15
作者：
HUMMERS, WS;OFFEMAN, RE
通讯作者：
OFFEMAN, RE
影响因子：
10.9
作者：
Stankovich, Sasha;Piner, Richard D.;Ruoff, Rodney S.
通讯作者：
Ruoff, Rodney S.
影响因子：
3.7
作者：
Kresse, G;Furthmuller, J
通讯作者：
Furthmuller, J
影响因子：
17.1
作者：
Han, Jinkyu;Kim, Hyunju;Jang, Sung-Yeon
通讯作者：
Jang, Sung-Yeon