| 초록 |
In conventional water splitting reaction, huge energy is required to overcome high energy barrier for sluggish anodic O2 evolution reaction (OER). Herein, we introduce oxidative biomass upgrading reaction by oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA) instead of OER in water splitting reaction. Electrocatalytic electrode for HMF oxidation is synthesized by adjusting the assembly sequence of Layer-by-Layer (LbL) films composed of the Au and Pd nanoparticles (NPs) and graphene oxide (GO) nanosheets. In case of co-assembled bimetallic LbL structure of (GO/Au/GO/Pd)n, both electrocatalytic activity and conversion of HMF is significantly higher than that of respective monometallic LbL electrode ((GO/Au)n and (GO/Pd)n). These findings show that the electrocatalytic activity can be highly tunable by the combination of metal NPs in the LbL structure, and bimetallic system represents excellent performance due to synergistic effects. |
