Ahmad Solehin Ab SabarSyaza AzhariNur Atiqah NasirMuhammad Zamir Othman2024-05-282024-05-2820232023-9-29Ahmad Solehin, A. S. et al. (2023). Synthesis and characterisation of carbon aerogel derived from carboxymethyl cellulose as hydrogen storage material. J. Phys. Sci., 34(2), 13–27. https://doi.org/10.21315/jps2023.34.2.21675-340210.21315/jps2023.34.2.2https://jps.usm.my/wp-content/uploads/2023/08/JPS-342_Art-2_Dami-2.pdfhttps://oarep.usim.edu.my/handle/123456789/7381A direct, simple and low-cost approach to synthesising carbon aerogelmagnesium (CA-Mg) composites has been demonstrated in this research. It is conducted by carbonising sodium carboxymethyl cellulose (CMC) aerogels via a sol-gel and freezedrying process. Mg is used as an enhancer for CA in the preparation step and as a selective candidate for the hydrogen storage device. Note that the structure and morphology of CA-Mg composites are characterised using field emission scanning electron microscopy (FESEM), fourier transforms infrared spectroscopy (FTIR) and X-ray diffraction (XRD) techniques. The ability of CA-Mg composites to act as a hydrogen storage device is analysed by utilising Brunauer-Emmett-Teller (BET) and temperature-programmed desorption analysis. The CA-Mg composites comprise porous structures with a high specific surface area of 101.4407 m2 /g, and 0.002 mol of Mg2+ is the optimum concentration for synthesising CA-Mg composites. As a potential candidate for a hydrogen storage device, the CA-Mg composites show an initial dehydrogenation temperature of 377.22°C, where they desorbed the maximum amount of hydrogen gas. This study emphasises the potential for using CA as a hydrogen storage device, which fulfils the seventh goal of the Sustainable Development Goals (SDGs), affordable and clean energy, as well as Department of Energy (DOE)’s goal of using carbon-based materials.en-UScarbon aerogel, carboxymethyl cellulose, carbonisation, hydrogen storageArticle1327342