Performance Promotion of Multipurpose Catalysts Using Increased Oxygen Vacancy Amounts by Charge-Mismatched Doping

Yeji Park, Vy Ngoc Pham, Kwangyeol Lee, Hangil Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Modulating the oxygen vacancy (V0) in nanostructures has opened a new avenue for efficient catalyst design, facilitating biomass oxidation reactions and electrocatalytic properties. In this study, we have investigated the properties of NiO-based catalysts with varying degrees of V0 achieved through ion doping of the catalyst with cations of different oxidation states (TM3+) or the same valence state (TM2+) as Ni2+ in the NiO matrix. By introducing charge-mismatched dopants, we enhanced the concentration of V0 in the NiO catalyst, resulting in remarkable selectivity (∼50%) for the conversion of 2,5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), as well as a lower overpotential in the oxygen evolution reaction (OER). We believe that charge-mismatched doping offers a novel avenue for optimizing defect engineering in oxide-based catalysts, which can enable more efficient biomass conversion and water splitting. These findings have made a significant contribution to the field of multipurpose catalysis and hold the potential to inspire new catalyst designs that would usher in a more sustainable future.

Original languageEnglish
Pages (from-to)13428-13434
Number of pages7
JournalInorganic Chemistry
Volume62
Issue number33
DOIs
Publication statusPublished - 2023 Aug 21

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (2021R1A2C2007992 for H.L. and 2019R1A6A1A11044070 and 2021M3H4A1A02049916 for K.L.). K.L. also acknowledges the support of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant (Grant no. 20203020030010).

Publisher Copyright:
© 2023 American Chemical Society.

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Fingerprint

Dive into the research topics of 'Performance Promotion of Multipurpose Catalysts Using Increased Oxygen Vacancy Amounts by Charge-Mismatched Doping'. Together they form a unique fingerprint.

Cite this