Room-temperature fabrication of defective CoO_xH_y nanosheets with abundant oxygen vacancies and high porosity as efficient 5-hydroxymethylfurfural oxidation electrocatalysts

Abstract

Cobalt oxides/hydroxides have attracted increasing attention in the electrocatalytic oxidation reaction of 5-hydroxymethylfufural (HMFOR) at ambient conditions for 2,5-furandicarboxylic acid (FDCA) production recently, but the understanding of the interplay of...

Abundant Surface Defects in Cobalt Hydroxides/Oxyhydroxides Induced by Zinc Species Facilitate Water Oxidation

“…The corresponding SEM images of the three electrolysis products are depicted in Figure g–i. The obtained CoO x H y exhibits binary hexagonal nanosheets consistent with previous reports, , but CoZnO x H y reveals a disordered 2D structure with a slight tendency to form a hexagonal structure because Zn sites are easily dissolved (Figures g,h and S9a–d). The electrolysis product of ZnCoBTC maintains a hexagonal structure, and its morphological defects expose abundant active sites that would further improve the electrochemical performance (Figures i and S9e,f).…”

Recent progress in transition metal based catalysts and mechanism analysis for alcohol electrooxidation reactions

“…Their production predominantly involves the selective oxidation of aldehydes or hydroxymethyl groups. [90][91][92][93] Among these, FDCA is particularly valuable and serves as an eco-friendly alternative to petroleum-based terephthalic acid. 62,94,95 The U.S. Department of Energy has listed FDCA as one of the top 12 sugar-derived platform chemicals.…”

Recent Advances in Electrocatalytic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid by Heterogeneous Catalysts

“…This catalyst had good stability and remained active even after six consecutive reactions. Recently, Huang and co-workers prepared a series of defective hydrated cobalt oxide nanosheets (CoO x H y ) by using methylamine (MA) and/or NaBH 4 (BH) via room-temperature reduction methods [80]. These CoO x H y nanosheets with defect structures had abundant oxygen vacancies, high Co 2+ /Co 3+ ratios, and high porosity.…”