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Improved hydrogen uptake of metal modified reduced and exfoliated graphene oxide

机译：改善了金属改性和剥落的石墨烯氧化物的氢气吸收

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摘要

This study investigated and compared the extent of structural modification and hydrogen uptake of reduced and exfoliated graphene oxides on addition of platinum, nickel and palladium. The addition of all metals affected structure and improved hydrogen uptake but the extent depended on preparation and type of metal. Surface area and pore volume decreased on addition of metals to RGO but increased for EGO. Dense structure of RGO was not affected by platinum, however, changed significantly to fluffy structure on addition of nickel and palladium. The separation of layers increased on addition of palladium to fluffy EGO resulting in its highest surface area and pore volume of 449 m~2/g and 2 cm~3/g, respectively. The highest hydrogen uptake of 3.52 wt% was obtained for Pd/EGO (at -196 °C, 30 bar) and may be attributed to high surface area, pore volume, O/C ratio and dispersion of palladium particles.
机译：本研究研究并比较了在添加铂，镍和钯的制备和剥落的石墨烯氧化物的结构改性和氢气吸收的程度。 添加所有金属受影响的结构和改善的氢气吸收，但程度依赖于制备和金属类型。 对于RGO的金属，表面积和孔体积降低，但为自我增加而增加。 然而，Rgo的致密结构不受铂的影响，而是在添加镍和钯的蓬松的结构中变化显着变化。 在加入钯到蓬松的自来组中，层的分离增加，导致其最高表面积和449μm〜2 / g和2cm〜3 / g的孔体积。 对于Pd / EGO（在-196℃，30巴）中获得3.52wt％的最高氢吸收，并且可以归因于高表面积，孔体积，O / C比和钯颗粒的分散。

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  • 来源
    《Journal of Materials Research》 |2021年第15期|3109-3120|共12页
  • 作者

    Sohan Bir Singh; Mahuya De;

  • 作者单位

    Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India;

    Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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