Mg2+ Doped into Electro-synthesized HKUST-1 and Their Initial Hydrogen Sorption Properties

International Conference on Chemistry and Material Science 2017

化学;材料科学

Lestari, W.W.^1 ; Ni'Maturrohmah, D.^1 ; Arrozi, U.S.F.^2 ; Suwarno, H.^3

Research Group of Porous Materials for Sustainability, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Jl. Ir Sutami No. 36A, Kentingan-Jebres, Central Java, Surakarta

57126, Indonesia^1

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

01069, Germany^2

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

15314, Indonesia^3

关键词: Alternative energy;    Basic structure;    Hydrogen sorption;    Hydrogen sorption capacity;    Innovative materials;    Metalorganic frameworks (MOFs);    Surface area;    XRD analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012031/pdf
DOI  :  10.1088/1757-899X/299/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The hydrogen storage materials are essentially play important roles in supporting the utilization of hydrogen as a promising alternative energy. Several innovative materials have been proposed and intensively investigated in this regard, including Metal-Organic Framework (MOFs). MOFs type HKUST-1 [Cu3(BTC)2] (BTC = benzene-tri-carboxylate) is the most explored materials in hydrogen storage. In this research, HKUST-1 was electro-synthesized under 15 volt for 1.5 h. This material was ex-situ modified with magnesium(II) ion with variation: 3, 5 and 10 wt% to add attractive sites for hydrogen to form Mg2+@HKUST-1. The final materials were characterized by XRD, FTIR, SEM-EDX, and SAA. Hydrogen sorption measurement was conducted using Sievert system at 30 and 80 °C with pressure from 0.2 to 1.5 bar in 10 minutes for each condition. According to XRD analysis, the basic structure of Mg2+@HKUST-1 was remaining stable. In contrary, SEM analysis showed that HKUST-1 morphology was changed after modification with Mg2+. In addition, the surface area of materials significantly increased from 372.112 to 757.617m2/g, based on SAA analysis. The presence of Mg2+in the HKUST-1 increased the hydrogen sorption capacity up to 0.475 wt% at 1.4 bar at 30 °C and 0.256 wt% at 80 °C (1.4 bar).