Lee Seul-Yi, Park Soo-Jin
Korea CCS R&D Center, Korea Institute of Energy Research, 152 Gajeongro, Yuseoung-gu, Daejeon 305-343, Korea.
J Nanosci Nanotechnol. 2013 Jan;13(1):443-7. doi: 10.1166/jnn.2013.6930.
In this work, Ni-doped graphene oxide/MIL-101 hybrid composites (Ni--GO/MIL) were prepared to investigate their hydrogen storage behaviors. Ni--GO/MIL was synthesized by adding Ni--GO in situ during the synthesis of MIL-101 using a hydrothermal process, which was conducted by conventional convection heating with Cr(III) ion as a metal center and telephthalic acid as organic ligands. The crystalline structures and morphologies were measured by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The specific surface area and micropore volume were investigated by N2/77 K adsorption isotherms using the Brunauer-Emmett-Teller (BET) method and Dubinin-Radushkevic (D-R) equation, respectively. The hydrogen storage capacity was investigated by BEL-HP at 77 K and 1 bar. The obtained results show that Ni--GO/MIL presents new directions for achieving novel hybrid materials with higher hydrogen storage capacity.
在本工作中，制备了镍掺杂氧化石墨烯/MIL-101杂化复合材料（Ni-GO/MIL）以研究其储氢行为。通过在水热法合成MIL-101的过程中原位添加Ni-GO来合成Ni-GO/MIL，水热法采用常规对流加热，以Cr(III)离子作为金属中心，对苯二甲酸作为有机配体。分别通过X射线衍射（XRD）和扫描电子显微镜（SEM）测量晶体结构和形貌。分别使用布鲁诺尔-埃米特-特勒（BET）法和杜比宁-拉杜什克维奇（D-R）方程通过N2/77 K吸附等温线研究比表面积和微孔体积。在77 K和1 bar下通过BEL-HP研究储氢容量。所得结果表明，Ni-GO/MIL为实现具有更高储氢容量的新型杂化材料提供了新方向。
