A highly selective and active metal-free catalyst for ammonia production.,Nanoscale Horizons

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A highly selective and active metal-free catalyst for ammonia production.
Nanoscale Horizons ( IF 8.0 ) Pub Date : 2020-07-10 , DOI: 10.1039/d0nh00287a
Chengyu Xing ₁ , Chenyu Wu , Yurui Xue , Yingjie Zhao , Lan Hui , Huidi Yu , Yuxin Liu , Qingyan Pan , Yan Fang , Chao Zhang , Danyan Zhang , Xi Chen , Yuliang Li

Affiliation

We report a facile surface-induced method for the in situ growth of single-/few-layered crystalline fluorographdiyne film on the surface of carbon fibers (cFGDY). The crystallized structure of cFGDY was directly confirmed by the scanning/transmission electron microscopy (SEM/TEM), high-resolution TEM (HRTEM) and computer simulation, selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. cFGDY showed a 9-fold stacking mode. Our results show that cFGDY is a metal-free electrocatalyst with unique structure and excellent performance for ammonia production from nitrogen and water efficiently at room temperature and ambient pressure, achieving a high NH₃ production rate and Faraday efficiency in neutral conditions. This work provides an efficient catalyst system with determined chemical and electronic structures for highly selective and active nitrogen reduction, serving as a promising platform towards the development of novel metal-free catalysts.

中文翻译：

一种用于生产氨的高选择性和无活性金属催化剂。

我们报告的碳纤维（cFGDY）表面上的单层/几层结晶氟代二炔薄膜原位生长的一种简便的表面诱导方法。cFGDY的结晶结构通过扫描/透射电子显微镜（SEM / TEM），高分辨率TEM（HRTEM）和计算机模拟，选定区域电子衍射（SAED），X射线光电子能谱（XPS）和拉曼光谱。cFGDY显示9倍堆叠模式。我们的结果表明，cFGDY是一种无金属的电催化剂，具有独特的结构，并且在室温和环境压力下能有效地从氮和水中生产氨，具有出色的性能，可实现较高的NH ₃中性条件下的生产率和法拉第效率。这项工作为确定的化学和电子结构提供了高效的催化剂体系，以实现高度选择性和活性氮还原，为开发新型无金属催化剂提供了有希望的平台。

更新日期：2020-07-27

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