Synthesis and Characterization of Nickel�Magnesium Catalyst Supported on Reduced Graphene Oxide
In this study, nickel�magnesium catalyst supported on reduced graphene oxide nanosheets was synthesized. rGO support was characterized by X-ray diffraction (XRD), surface area and porosity, and thermogravimetric analysis, and fourier-transform infrared (FTIR) and Raman spectroscopy to understand i...
| Main Authors: | Mohd Ridzuan, N.D., Shaharun, M.S., Din, I.U., Puspitasari, P. |
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| Format: | Conference or Workshop Item |
| Institution: | Universiti Teknologi Petronas |
| Record Id / ISBN-0: | utp-eprints.29287 / |
| Published: |
Springer Science and Business Media B.V.
2021
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| Online Access: |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123287218&doi=10.1007%2f978-981-16-4513-6_20&partnerID=40&md5=683bdf10e524a8085fe6480894817df3 http://eprints.utp.edu.my/29287/ |
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| Summary: |
In this study, nickel�magnesium catalyst supported on reduced graphene oxide nanosheets was synthesized. rGO support was characterized by X-ray diffraction (XRD), surface area and porosity, and thermogravimetric analysis, and fourier-transform infrared (FTIR) and Raman spectroscopy to understand its physicochemical properties. The results revealed that the edge-oxidized rGO has high surface area (258.11 m2g�1) with approximately 36 multi graphitic layers where interlayer spacing is 0.336 nm each. High thermal stability of rGO makes it an excellent support to be used for high-temperature catalytic activity. Subsequently, rGO supported catalysts were synthesized via incipient wetness impregnation method. The amount of Ni was fixed at 20 wt whilst Mg was varied at 0 wt and 5 wt relative to rGO content to assess its effect as second metal towards properties of the catalyst. X-ray diffractograms of Ni20/rGO and Ni20Mg5/rGO demonstrated formation of new peaks due to presence of NiO and NiO�MgO whereas (002) rGO peak at 26.5° does not show obvious changes, concluding the stability of rGO after the impregnation and calcination processes. Upon impregnation, the surface area and porosity of Ni20/rGO is lower than that of rGO due to dispersion of Ni metal on the rGO surface. BET surface area of Ni20Mg5/rGO catalyst further decreases to 103.95 m2g�1 due to the addition of metal content but its porosity is higher than Ni20/rGO. Hence, it is postulated that Ni and Mg metal form solid solution (NiO�MgO) on rGO nanosheets which has bigger particle size compared to NiO, lowering its penetration into rGO mesopores. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. |
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