Anisotropic solution growth of 1D/2D N-rich carbon

Advanced Powder Materials Pub Date : 2023-10-01 DOI:10.1016/j.apmate.2023.100138

Zongge Li , Chenwei Wang , Anuj Kumar , Hongrui Jia , Yin Jia , Huifang Li , Lu Bai , Guoxin Zhang , Xiaoming Sun

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引用次数: 1

Abstract

Despite the fact that low-dimensional carbons (LDCs, 1D/2D) materials are very interesting due to their intriguing electrical properties, we still attempt to enrich them by high N-content in order to enjoy their electro-applications. We here report a template-free synthesis of 1D/2D LDC with high N content (>40 at%) and tunable aspect ratios from molecular formamide (FA). The 1D/2D LDC is in polyaminoimidazole as confirmed by pair distribution function analysis, and 1D growth mode can be altered to 2D by simply adding a 2D-guiding molecule of melamine. Electrochemical properties of the LDC can be finely tuned by adjusting the solvothermal temperature and melamine dosage. It is revealed that the optimal 2D LDC delivers superior O₂-to-H₂O₂ yield (687.2 mmol·g⁻¹⋅h⁻¹) and Faradic efficiency (87.5%). Considering the heavy N content and high adjustability of aspect ratio, the FA-derived LDCs potentially open new synthesis routes for structural carbon materials for broad electrochemical applications.

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一维/二维富氮碳的各向异性溶液生长

尽管低维碳（LDCs，1D/2D）材料由于其有趣的电学性质而非常有趣，但我们仍然试图通过高N含量来丰富它们，以享受它们的电学应用。我们在此报道了具有高N含量（>；40）的1D/2D LDC的无模板合成at%）和来自分子甲酰胺（FA）的可调长径比。通过对分布函数分析证实，1D/2D LDC在聚氨基咪唑中，并且可以通过简单地添加三聚氰胺的2D引导分子将1D生长模式改变为2D。LDC的电化学性能可以通过调节溶剂热温度和三聚氰胺的用量来微调。结果表明，最佳2D LDC可提供卓越的O2-H2O2产率（687.2mmol·g−1·h−1）和法拉第效率（87.5%）。考虑到高N含量和高纵横比可调性，FA衍生的LDCs为结构碳材料的广泛电化学应用开辟了新的合成途径。

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来源期刊

Advanced Powder Materials

CiteScore

33.30

自引率

0.00%

发文量