石墨相氮化碳包覆中空碳及其氧气还原性能
Hollow Carbons Coated with Graphitic Carbon Nitride for Oxygen Reduction Reaction
DOI: 10.12677/NAT.2021.113011, PDF,    科研立项经费支持
作者: 宋诗竹, 李 奇*：南通大学化学化工学院，江苏 南通
关键词: 石墨相氮化碳；中空碳；氧气还原反应； Graphite Phase Carbon Nitride； Hollow Carbon； Oxygen Reduction Reaction
摘要: 以单氰胺为石墨相氮化碳(g-C3N4)前驱体，中空碳纳米球(hollow carbon nanospheres, HCNs)为碳基底，热解制备核壳状石墨相氮化碳包覆中空碳(HCNs@g-C3N4)催化剂。通过扫描电镜、透射电镜、X射线衍射和红外吸收光谱对其形貌、结构、组成进行表征；并通过电化学工作站对其在碱性电解质中的氧气还原(oxygen reduction reaction, ORR)性能进行测试。探究HCNs、g-C3N4和HCNs@g-C3N4复合材料的结构对ORR性能的影响。结果表明，组成复合材料后，HCNs@g-C3N4的ORR性能相比HCNs，如半波电位提高了80 mV和循环稳定性保持最初电流的90%，得到显著提高。
Abstract: Cyanamide used as precursor of the graphitic carbon nitride (g-C3N4), hollow carbon nanospheres (HCNs) used as carbon support, core-shell HCNs@g-C3N4 catalysts were synthesized via a pyrolysis approach. The morphologies, structures, and compositions were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and infrared spectra. The oxygen reduction reaction (ORR) performance was performed through electrochemical station in alkaline medium. The effect of structure on ORR performance of HCNs, g-C3N4, and HCNs@g-C3N4 composites were studied. It was found that HCNs@g-C3N4 composites show greatly significant ORR performances compared to HCNs, such as improving half-wave potential (80 mV) and maintaining long-term durability (90% relative to initial current).
文章引用：宋诗竹, 李奇. 石墨相氮化碳包覆中空碳及其氧气还原性能[J]. 纳米技术, 2021, 11(3): 85-92. https://doi.org/10.12677/NAT.2021.113011

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