Enhanced hydrogen sorption properties over Mg2+ modified solvothermal synthesized HKUST-1 (Mg2+/HKUST-1)

13th Joint Conference on Chemistry

Lestari, Witri Wahyu^1 ; Ni'Maturrohmah, Dwi^1 ; Putra, Riandy^1 ; Suwarno, Hadi^2 ; Arrozi, Ubed Sonai Fahrudin^3

Research Group of Porous Materials for Sustainability, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Jebres, Central Java, Surakarta, Indonesia^1

Center for Nuclear Fuel Technology, BATAN, Serpong, South Tangerang

15314, Indonesia^2

Department of Inorganic Chemistry, Dresden University of Technology, Mommsenstrasse 6, Dresden

01069, Germany^3

关键词: Ex situ;    High-capacity materials;    HKUST-1;    Hydrogen sorption capacity;    Nitrogen sorption isotherms;    Operational temperature;    Solvothermal;    Structure and morphology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/509/1/012152/pdf
DOI  :  10.1088/1757-899X/509/1/012152

来源: IOP

【 摘 要 】

The development of high capacity materials for hydrogen storage such as MOFs to support the utilization of hydrogen as a renewable energy source is an attractive area for further investigation. In this research, a well-known type of MOF, specifically HKUST-1, was synthesized using the solvothermal method and ex-situ modified with magnesium(II) ions at 3, 5, and 10 wt% to serve as additional binding sites to form Mg2+/HKUST-1. The resulting materials were analysed via XRD, FTIR, SEM-EDX, and a nitrogen sorption isotherm. Hydrogen sorption measurements were conducted using a Sievert system. The structure and morphology of HKUST-1 remained stable after it was embedded with Mg2+ according to X-ray diffraction, FTIR, and SEM analysis. Nitrogen sorption isotherm revealed that before and after modification with Mg2+, the materials could be classified as microporous and the surface area increased significantly from 713.283 to 1200.211 m2/g. The presence of Mg2+ in the HKUST-1 enhanced its hydrogen sorption capacity up to 0.292 wt% at 1.2 bar under an operational temperature of 30°C and 0.48 wt% at 80°C (1.4 bar).