Characterization of Complex Interactions at the Gas–Solid Interface with in Situ Spectroscopy: The Case of Nitrogen-Functionalized Carbon
Characterization of Complex Interactions at the Gas–Solid Interface with in Situ Spectroscopy: The Case of Nitrogen-Functionalized Carbon
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DOI：
10.1021/acs.jpcc.9b00487
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发表时间：
2019-03
期刊：
影响因子：
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通讯作者：
Michael J. Dzara;K. Artyushkova;S. Shulda;Matthew B Strand;C. Ngo;E. Crumlin;T. Gennett;S. Pylypenko
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文献类型：
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作者：
Michael J. Dzara;K. Artyushkova;S. Shulda;Matthew B Strand;C. Ngo;E. Crumlin;T. Gennett;S. Pylypenko
在许多能源和环境应用中，气固界面的相互作用驱动物理化学过程;然而，与复杂系统中这些动态相互作用的表征和发展相关的挑战限制了开发有效材料的进展。因此，结构-性质-性能的关联在很大程度上取决于先进的气-固相互作用研究技术和分析方法的发展。在这项工作中，O2和加湿O2上的氮功能化碳（N-C）材料的吸附行为进行了研究，以提供一个更好的理解的氮物种在氧还原反应（ORR）中的作用。采用溶剂热合成和氮离子注入的方法制备了一系列氮碳材料，这些材料在不同形貌的碳基体中具有不同的氮含量和形态。采用原位漫反射红外傅里叶变换光谱法表征了氮碳样品的吸附行为。
Interactions at the gas–solid interface drive physicochemical processes in many energy and environmental applications; however, the challenges associated with characterization and development of these dynamic interactions in complex systems limit progress in developing effective materials. Therefore, structure–property–performance correlations greatly depend on the development of advanced techniques and analysis methods for the investigation of gas–solid interactions. In this work, adsorption behavior of O2 and humidified O2 on nitrogen-functionalized carbon (N–C) materials was investigated to provide a better understanding of the role of nitrogen species in the oxygen reduction reaction (ORR). N–C materials were produced by solvothermal synthesis and N-ion implantation, resulting in a set of materials with varied nitrogen amount and speciation in carbon matrices with different morphologies. Adsorption behavior of the N–C samples was characterized by in situ diffuse reflectance infrared Fourier-transform ...