论文标题

能源材料应用的纳米碳:n $ _2 $还原反应

Nanocarbon for Energy Material Applications: N$_2$ Reduction Reaction

论文作者

Centi, Gabriele, Perathoner, Siglinda

论文摘要

纳米碳是重要的能量材料类别,一种相关的应用是氮还原反应,即通过光和电催化方法直接合成N2和H2O的NH3。氨也是有价值的能量或氢载体。该观点论文分析了该领域的发展,将讨论限制为基于纳米碳的电极。讨论了这些方面:i)与与缺陷/菌株相关的C原子上的电荷密度差异相关的主动地点,ii)与杂原子兴奋剂,iii)引入孤立的金属离子,iv)创建和原位氧化物(氢氧化物)/纳米碳边界和nanocarbonies和v)nanocarbon特性的二氧化物(氢氧化物)/纳米碳边界。讨论的重点是表演和机械方面。 AIM不是系统的最新报告,而是强调通过使用选定的论文研究这种有挑战性的反应时使用不同观点的必要性。尽管活动位点的拟议性质存在很大的差异,但都属于远离目标的限制范围。强调一种整体方法是取得突破性的进步。

Nanocarbons are an important class of energy materials and one relevant application is for the nitrogen reduction reaction, i.e., the direct synthesis of NH3 from N2 and H2O via photo- and electrocatalytic approaches. Ammonia is also a valuable energy or hydrogen vector. This perspective paper analyses developments in the field, limiting discussion to nanocarbon-based electrodes. These aspects are discussed: i) active sites related to charge density differences on C atoms associated to defects/strains, ii) doping with heteroatoms, iii) introduction of isolated metal ions, iv) creation and in situ dynamics of metal oxide(hydroxide)/nanocarbon boundaries, and v) nanocarbon characteristics to control the interface. Discussion is focused on the performances and mechanistic aspects. Aim is not a systematic state-of-the-art report but to highlight the need to use a different perspective in studying this challenging reaction by using selected papers. Notwithstanding the large differences in the proposed nature of the active sites, fall all within a restricted range of performances, far from the targets. A holistic approach is emphasized to make a breakthrough advance.

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