负载无序介孔空心碳球的铂、钯及铂/钯合金储氢性能比较
A Comparison of Hydrogen Storage in Pt, Pd and Pt/Pd Alloys Loaded Disordered Mesoporous Hollow Carbon Spheres.
作者信息
Baca Martyna, Cendrowski Krzysztof, Kukulka Wojciech, Bazarko Grzegorz, Moszyński Dariusz, Michalkiewicz Beata, Kalenczuk Ryszard J, Zielinska Beata
机构信息
Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin Al. Piastow 45, 70-311 Szczecin, Poland.
Institute of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Pułaskiego 10, 70-322 Szczecin, Poland.
出版信息
Nanomaterials (Basel). 2018 Aug 21;8(9):639. doi: 10.3390/nano8090639.
Comprehensive study to evaluate the ability of hydrogen uptake by disordered mesoporous hollow carbon spheres doped witch metal such as Pt, Pd or Pt/Pd was conducted. They were synthesized facilely using sonication and then calcination process under vacuum at the temperature of 550 °C. The effect on hydrogen sorption at neat-ambient conditions (40 °C, up to 45 bar) was thoroughly analyzed. The results clearly revealed that metal functionalization has a significant impact on the hydrogen storage capacity as the mechanism of gas uptake depends on two factors: metal type and certain size of particles. Thus, functionalized spheres adsorb hydrogen by physisorption forming metal hydrides or metal hydrides combined with hydrogen spillover effect. As a result, a sample with narrower distribution of nanoparticles and smaller specific size exhibited enhanced hydrogen uptake.
开展了一项综合研究，以评估掺杂铂、钯或铂/钯等金属的无序介孔空心碳球吸收氢气的能力。它们通过超声处理，然后在550℃的真空温度下进行煅烧过程，轻松合成。对纯环境条件（40℃，高达45巴）下的氢吸附效果进行了全面分析。结果清楚地表明，金属功能化对储氢能力有重大影响，因为气体吸收机制取决于两个因素：金属类型和特定的颗粒尺寸。因此，功能化球体通过物理吸附吸附氢气，形成金属氢化物或结合氢溢流效应的金属氢化物。结果，纳米颗粒分布较窄且比尺寸较小的样品表现出增强的氢吸收能力。
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