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Two-Dimensional Red Phosphorus Nanosheets: Morphology Tuning and Electrochemical Sensing of Aromatic Amines
Small Methods ( IF 10.7 ) Pub Date : 2021-09-09 , DOI: 10.1002/smtd.202100720 Lingbo Liu 1 , Jian Shen 1 , Kangbing Wu 1 , Nianjun Yang 2
Small Methods ( IF 10.7 ) Pub Date : 2021-09-09 , DOI: 10.1002/smtd.202100720 Lingbo Liu 1 , Jian Shen 1 , Kangbing Wu 1 , Nianjun Yang 2
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Synthesis of 2D materials with different morphologies is of significance to reveal their morphology-dependent properties and further explore their morphology-dependent applications. This work reports the synthesis of 2D red phosphorus nanosheets (RPNSs) with different thicknesses by means of a phosphorus-amine method together with regulated electrophilicity of the solution. With graphene as the support, the RPNSs produced in 0.01 m HCl feature a unique 2D nanostructure, uniform distribution, and excellent electrochemical performance. Originating from the reacted characteristics between phosphorus and amine, the interaction of aniline with the RPNSs is clarified theoretically and experimentally by means of density functional theory, X-ray photoelectron spectroscopy, and voltammetry. A covalent bond is confirmed to be formed during the deprotonation of aniline and its binding energy reaches −2.31 eV. Stemming from such an adsorption process, different aromatic amines (e.g., p-nitroaniline, p-phenylenediamine) are sensitively and selectively monitored on the RPNSs. Consequently, this work provides a new way to clarify morphology-dependent properties and applications of novel 2D materials.
中文翻译：
二维红磷纳米片：芳香胺的形态调整和电化学传感
合成具有不同形貌的二维材料对于揭示其形貌相关性质和进一步探索其形貌相关应用具有重要意义。这项工作报告了通过磷胺法合成具有不同厚度的二维红磷纳米片（RPNS）以及调节溶液的亲电性。以石墨烯为载体，RPNSs在0.01 m HCl具有独特的二维纳米结构、均匀分布和优异的电化学性能。源于磷和胺之间的反应特性，通过密度泛函理论、X射线光电子能谱和伏安法在理论上和实验上阐明了苯胺与RPNS的相互作用。证实苯胺去质子化过程中形成了共价键，其结合能达到-2.31 eV。源于这样的吸附过程，不同的芳香胺（例如，对硝基苯胺、对苯二胺）在 RPNS 上被灵敏和选择性地监测。因此，这项工作为阐明新型二维材料的形态相关特性和应用提供了一种新方法。
更新日期：2021-10-28
中文翻译：
二维红磷纳米片：芳香胺的形态调整和电化学传感
合成具有不同形貌的二维材料对于揭示其形貌相关性质和进一步探索其形貌相关应用具有重要意义。这项工作报告了通过磷胺法合成具有不同厚度的二维红磷纳米片（RPNS）以及调节溶液的亲电性。以石墨烯为载体，RPNSs在0.01 m HCl具有独特的二维纳米结构、均匀分布和优异的电化学性能。源于磷和胺之间的反应特性，通过密度泛函理论、X射线光电子能谱和伏安法在理论上和实验上阐明了苯胺与RPNS的相互作用。证实苯胺去质子化过程中形成了共价键，其结合能达到-2.31 eV。源于这样的吸附过程，不同的芳香胺（例如，对硝基苯胺、对苯二胺）在 RPNS 上被灵敏和选择性地监测。因此，这项工作为阐明新型二维材料的形态相关特性和应用提供了一种新方法。
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