AI 中文总结
本研究通过镍纳米颗粒功能化三维石墨烯，结合扫描电镜、X射线光电子能谱等表征手段，探究其对氢吸附与抗氧化性的影响，为提升储氢材料稳定性提供了潜在策略。
AI 中文摘要
多孔材料是多种应用的通用解决方案。近期新开发的三维石墨烯（3D-Graphene）兼具石墨烯的优异特性与三维结构，为需要高表面积体积比的应用开辟了前景。本研究探索以镍（Ni）纳米颗粒功能化三维石墨烯，作为提升储氢能力的策略，并评估纳米颗粒对氢吸附量及抗氧化性的影响。采用扫描电子显微镜表征原始样品与镍功能化样品的形貌和结构特性，利用X射线光电子能谱分析功能化样品的表面化学组成。通过提供分子氢或原子氢对样品进行氢化，采用热脱附光谱评估储氢性能。之后将样品暴露于大气氧中系统研究氧化效应，再开展进一步氢化实验。结果表明，镍功能化会影响氢吸附和氧化行为，对提升材料稳定性（尤其针对储氢应用）具有潜在意义。
英文摘要
Porous materials represent a versatile solution for several applications. Indeed, the recent development of a new material, named 3D-Graphene, which combines the exceptional characteristics of graphene with a three-dimensional structure, opens perspectives for applications where a high surface-to-volume ratio is beneficial. In this study, we explore the functionalization of 3D-Graphene with nickel (Ni)-nanoparticles as a strategy to enhance hydrogen storage capabilities, and we assess the influence of the NPs on hydrogen uptake and oxidation resilience. The morphology and structural properties of pristine and Ni-functionalized samples were characterized using Scanning Electron Microscopy. Additionally, X-ray Photoelectron Spectroscopy was employed to analyze the surface chemical composition of the functionalized samples. Samples have been hydrogenated supplying molecular or atomic hydrogen, and hydrogen storage performance was assessed through Thermal Desorption Spectroscopy. Afterwards, oxidation effects were systematically studied by exposing the samples to atmospheric oxygen, followed by further hydrogenation experiments. Our results indicate that Ni functionalization influences both hydrogen adsorption and oxidation behavior, with potential implications for improving the stability of the material, especially for hydrogen storage applications.
Comments18 pages, 6 figures
