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A High-Efficiency Electrocatalyst for Oxidizing Glucose: Ultrathin Nanosheet Co-Based Organic Framework Assemblies

Li, Qing, Shao, Zhifang, Han, Ting, Zheng, Mingbo, Pang, Huan
ACS sustainable chemistry & engineering 2019 v.7 no.9 pp. 8986-8992
catalysts, cupric oxide, electrochemistry, electrolytes, environmental degradation, glucose, gold, nanosheets, oxidation, silver, surface area
The glucose oxidation reaction (GOR) relies on noble metals (such as Au and Ag) and metal oxides (such as CuO, RuO₂, and IrO₂) as catalysts in a general way. However, these metal-based candidate materials often suffer from a variety of defects, including high cost, complexity of their synthesis method, and damage to the environment. Here, we synthesized ultrathin two-dimensional (2D) nanosheets (about 2.041 nm in thickness) that have a large surface area and good electrocatalytic properties for GOR. The destination product was prepared using a one-step solvothermal process involving Co(NO₃)₂·6H₂O and p-phthalic acid synthesized in the presence of DMF/C₂H₅OH solution. The as-synthesized ultrathin 2D nanosheet Co-MOFs exhibited an electrocatalytic performance for the glucose that was better than that for the shell-like multilayer assemblies Co-MOFs in the alkaline electrolyte, including a higher stability, higher sensitivity, and better activity.