Atomic-Interface Effect of Single-Atom Ru/CoO x for Selective Electrooxidation of 5-Hydroxymethylfurfural

作者：Gu, Wenlei; Pei, An^*; Zhang, Shiyi; Jiang, Feifei; Jia, Yanyan^*; Qin, Qizhen; Du, Ruian; Li, Zhengjian; Liu, Renfeng; Qiu, Yongcai; Yan, Keyou; Zhao, Yun; Liang, Cheng^*; Chen, Guangxu^*

来源：ACS applied materials & interfaces, 2023, 15(23): 28036-28043.

DOI：10.1021/acsami.3c03430

• 5-hydroxymethyfurfural
• selective electrooxidation
• cobalt oxide
• ruthenium single atom
• interfaceeffects

The development of single-atom catalysts with effectiveinterfacesfor biomass conversion is a promising but challenging research area.In this study, a Ru-1/CoO x catalystwas successfully fabricated with the impregnation method, which featuredRu single atoms on a cobalt oxide substrate. The Ru-1/CoO x catalyst showed superior performance inthe selective electrooxidation of 5-hydroxymethylfurfural (HMF) toproduce 2,5-furandicarboxylic acid (FDCA), a high value-added product.The introduction of Ru single atoms with an ultralow loading of similar to 0.5wt % was revealed to accelerate the electroredox of Co2+/Co3+/Co4+ and improve the intrinsic activityof the CoO x substrate with an FDCA selectivityof 76.5%, which is better than that of the pristine CoO x electrocatalysts (62.7%). The interfacial synergisticeffect of the Ru-1/CoO x interfaceclarified that Ru single atoms can enhance the adsorption of HMF atthe Ru-1/CoO x interface, whichpromoted the rate-determining step of the selective C-H bondactivation for FDCA production. This finding provides valuable insightsinto the rational design of single-atom catalysts with functionalinterfaces for biomass upgrading.

• 单位
  华东理工大学