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Crystalline Red Phosphorus Nanoribbons: Large-Scale Synthesis and Electrochemical Nitrogen Fixation.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-08 , DOI: 10.1002/anie.202006679 Qian Liu 1 , Xue Zhang 1 , Jiahong Wang 1, 2 , Yanli Zhang 1 , Shi Bian 1 , Ziqiang Cheng 1 , Ning Kang 1 , Hao Huang 1 , Shuang Gu 1 , Yun Wang 1 , Danni Liu 1 , Paul K Chu 2 , Xue-Feng Yu 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-08 , DOI: 10.1002/anie.202006679 Qian Liu 1 , Xue Zhang 1 , Jiahong Wang 1, 2 , Yanli Zhang 1 , Shi Bian 1 , Ziqiang Cheng 1 , Ning Kang 1 , Hao Huang 1 , Shuang Gu 1 , Yun Wang 1 , Danni Liu 1 , Paul K Chu 2 , Xue-Feng Yu 1
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Two dimensional (2D) nanoribbons constitute an emerging nanoarchitecture for advanced microelectronics and energy conversion due to the stronger size confinement effects compared to traditional nanosheets. Triclinic crystalline red phosphorus (cRP) composed by a layered structure is a promising 2D phosphorus allotrope and the tube‐like substructure is beneficial to the construction of nanoribbons. In this work, few‐layer cRP nanoribbons are synthesized and the effectiveness in the electrochemical nitrogen reduction reaction (NRR) is investigated. An iodine‐assisted chemical vapor transport (CVT) method is developed to synthesize circa 10 g of bulk cRP lumps with a yield of over 99 %. With the aid of probe ultrasonic treatment, high‐quality cRP microcrystals are exfoliated into few‐layer nanoribbons (cRP NRs) with large aspect ratios. As non‐metallic materials, cRP NRs are suitable for the electrochemical nitrogen reduction reaction. The ammonia yield is 15.4 μg h−1 mgcat.−1 at −0.4 V vs. reversible hydrogen electrode in a neutral electrolyte under ambient conditions and the Faradaic efficiency is 9.4 % at −0.2 V. Not only is cRP a promising catalyst, but also the novel strategy expands the application of phosphorus‐based 2D structures beyond that of traditional nanosheets.
中文翻译：
结晶红色磷纳米带：大规模合成和电化学固氮。
二维（2D）纳米带由于与传统纳米片相比具有更强的尺寸限制效应而构成了一种用于高级微电子学和能量转换的新兴纳米体系结构。由层状结构组成的三斜晶型结晶红磷（cRP）是一种很有前途的2D磷同素异形体，其管状亚结构有利于纳米带的构建。在这项工作中，合成了几层cRP纳米带，并研究了其在电化学氮还原反应（NRR）中的有效性。开发了一种碘辅助化学蒸气传输（CVT）方法，可合成约10 g的大量cRP块，产率超过99％。借助探针超声处理，高质量的cRP微晶被剥落成具有高深宽比的几层纳米带（cRP NRs）。作为非金属材料，cRP NRs适用于电化学氮还原反应。氨产量为15.4μgh-1 毫克猫 相对于可逆氢电极在-0.4 V -1条件下在环境条件下为中性电解质，在-0.2 V时法拉第效率为9.4％。二维结构超越了传统的纳米片。
更新日期：2020-08-10
中文翻译：
结晶红色磷纳米带：大规模合成和电化学固氮。
二维（2D）纳米带由于与传统纳米片相比具有更强的尺寸限制效应而构成了一种用于高级微电子学和能量转换的新兴纳米体系结构。由层状结构组成的三斜晶型结晶红磷（cRP）是一种很有前途的2D磷同素异形体，其管状亚结构有利于纳米带的构建。在这项工作中，合成了几层cRP纳米带，并研究了其在电化学氮还原反应（NRR）中的有效性。开发了一种碘辅助化学蒸气传输（CVT）方法，可合成约10 g的大量cRP块，产率超过99％。借助探针超声处理，高质量的cRP微晶被剥落成具有高深宽比的几层纳米带（cRP NRs）。作为非金属材料，cRP NRs适用于电化学氮还原反应。氨产量为15.4μgh-1 毫克猫 相对于可逆氢电极在-0.4 V -1条件下在环境条件下为中性电解质，在-0.2 V时法拉第效率为9.4％。二维结构超越了传统的纳米片。
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