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Microwave-assisted catalytic conversion of glucose to 5-hydroxymethylfurfural using "three dimensional" graphene oxide hybrid catalysts.

Yui HiranoJorge N BeltraminiAtsushi MoriManami NakamuraMohammad Razaul KarimYang KimMasaaki NakamuraShinya Hayami
Published in: RSC advances (2020)
Hybrids of reduced graphene oxide (rGO) and metal/metal oxide (Pt, NiO/Ni(OH) 2 , CoO, Fe 3 O 4 ) nano particle were prepared by reduction of graphene oxide (GO) and metal ion (Pt 2+ , Ni 2+ , Co 2+ , Fe 2+ ) hybrids. The M-rGO hybrids (M = Pt, Ni-, Co and Fe) were justified for the transformation of glucose to 5-hydroxymethylfurfural (5-HMF). High glucose → 5-HMF conversion was yielded depending on the nature of the M-rGO catalyst. The Ni-rGO showed the highest 5-HMF yield. The conversion reaction tuned to the optimized state under a microwave-assisted reaction accomplished by using Ni-rGO. In such case, the conversion rate was 99% with a 5-HMF yield of 75%. In order to improve both the conversion and yield, NiGO-FD was prepared by a freeze-dry method. The NiGO-FD remarkably showed the highest conversion of 99% and 5-HMF yield of 95%. Beside the biomass transformation process, the physico-chemical strategy employed herein for multiplying the catalytic efficiency might be justified for catalyzing similar reactions.
Keyphrases
  • reduced graphene oxide
  • gold nanoparticles
  • metal organic framework
  • high glucose
  • transition metal
  • visible light
  • adipose tissue
  • ionic liquid
  • insulin resistance
  • aqueous solution