Electrochemical Oxidation of 5‐Hydroxymethylfurfural on CeO2‐Modified Co3O4 with Regulated Intermediate Adsorption and Promoted Charge Transfer. (17th January 2023)

• Record Type: Journal Article
• Authors: Zhao, Gongchi; Hai, Guangtong; Zhou, Peiyun; Liu, Zhimeng; Zhang, Yanyan; Peng, Baoxiang; Xia, Wei; Huang, Xiubing; Wang, Ge
• Is Part Of: Advanced functional materials. Volume 33:Number 14(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-01-17
• Subjects: 5‐hydroxymethylfurfural oxidation -- ceria -- electrocatalysts -- interface engineering; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202213170
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Electrocatalytic 5‐hydroxymethylfurfural oxidation reaction (HMFOR) can replace the kinetically slow oxygen evolution reaction to yield high value‐added chemicals. In this study, interface engineering is constructed by modifying CeO2 nanoparticles on Co3 O4 nanowires supported by nickel foam (NF). The construction of the heterointerface can facilitate the structural evolution of catalysts and charge transfer, as a result, the successfully synthesized NF@Co3 O4 /CeO2 exhibits higher 5‐hydroxymethylfurfural conversion (98.0%), 2, 5‐furandicarboxylic acid (FDCA) yield (94.5%), and Faradaic efficiency (97.5%) at a low electrolysis potential of 1.40 VRHE compared to NF@Co3 O4 and NF@CeO2 . Density‐functional theory calculations indicate that the establishment of heterointerface can effectively regulate the intermediate adsorption and promote electron transfer, which greatly reduces the activation energy of the dehydrogenation step in 5‐formyl‐2‐furancarboxylic acid (FFCA), and promotes the further oxidation of FFCA to FDCA, thereby improving the performance of HMFOR. In this study, the HMFOR behavior of the Co3 O4 /CeO2 interface effect is deeply explored, which provides guidance for the future design of heterointerface catalysts with efficient HMFOR performance. Abstract : A well‐designed Co3 O4 @CeO2 heterointerface is successfully constructed by modifying CeO2 on nickel foam (NF) supported Co3 O4 . The existence of the heterointerface enables the transfer of electrons from Co species to Ce species, which not only effectively facilitates the charge transfer but also regulates the proper adsorption of intermediates. Compared with NF@Co3 O4 and NF@CeO2, NF@Co3 O4 /CeO2 has better performance for 5‐hydroxymethylfurfural oxidation reaction.