Journal
CARBOHYDRATE POLYMERS
Volume 228, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.115385
Keywords
Copper(II)-beta-cyclodextrin; Functionalized graphene oxide; Molecular inclusion; Desulfurization; Benzothiophene
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Funding
- National Natural Science Foundation of China [21376265, U1662115]
- Fundamental Research Funds for the Central Universities [17CX06023, 18CX02118A]
- Shandong Provincial Natural Science Foundation, China [ZR2019MB057]
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A novel copper(II)-beta-cyclodextrin and CuO functionalized graphene oxide composite (CD-CuO/NH2-GO) was successfully synthesized by reacting mono-6-O-toluenesulfonyl-copper(II)-beta-cyclodextrin with amino and CuO functionalized graphene oxide. The characterization results showed that the CD-CuO/NH2-GO was well-characterized and has a BET surface area of 746.5 m(2) g(-1) and good thermal stability, and CD and CuO were uniformly dispersed. The unique structure of CD-CuO/NH2-GO is conducive to the synergistic effect of the different components, especially for the inclusion ability of CD. Benefiting from that, CD-CuO/NH2-GO could quickly and efficiently remove the thiophenic sulfides, which are difficult to be economically removed by hydrodesulfurization. The removal efficiency for the three sulfides was in the order of benzothiophene> dibenzothiophene > thiophene. The desulfurization process of benzothiophene has the fastest desulfurization rate (0.121 g mg(-1) min(-1)) and maximum sulfur capacity (12.75 mg S g(-1)). The different molecular inclusion ability of CD for the thiophenic sulfides demonstrates the difference in the desulfurization of CD-CuO/NH2-GO. The work highlights the synthesis and the potential application in fuel desulfurization of supramolecular GO composite nanomaterials.
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