Photocatalysis of Cr- and Fe-Doped CeO2 Nanoparticles to Selective Oxidation of 5-Hydroxymethylfurfuralopen access
- Authors
- Nam, Jeong-Woo; Pham, Vy Ngoc; Ha, Jeong Min; Shin, Minjeong; Lee, Hangil; Youn, Young-Sang
- Issue Date
- Jan-2023
- Publisher
- MDPI
- Keywords
- 5-hydroxymethylfurfural; oxygen vacancy; photocatalytic property; transition metal-doped CeO2 nanoparticles
- Citation
- Nanomaterials, v.13, no.1
- Journal Title
- Nanomaterials
- Volume
- 13
- Number
- 1
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/152119
- DOI
- 10.3390/nano13010044
- ISSN
- 2079-4991
2079-4991
- Abstract
- Oxygen vacancies (Vo) present in CeO2 nanoparticles (NPs) can effectively boost their photocatalytic activity under ultraviolet (UV) light. To improve photocatalytic performance, Cr- and Fe-doped CeO2 NPs with increased Vo were prepared using a simple method of doping Cr and Fe ions into CeO2 NPs, which was confirmed by an in-depth analysis of the structural and electronic changes. Through photocatalytic degradation (PCD) experiments with 5-hydroxymethylfurfural (HMF), we found that the PCD rates of the two doped CeO2 NPs were faster than that of the CeO2 NPs. In addition, the conversion of HMF to 2,5-furandicarboxylic acid (FDCA) using the doped CeO2 NPs occurred only through the mechanism of the selective oxidation to 5-hydroxymethyl-2-furancarboxylic acid (HMFCA), exhibiting better efficiency than using CeO2 NPs. © 2022 by the authors.
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