Ionic liquid-assisted preparation of Ag-CeO2 nanocomposites and their improved photocatalytic activity
- Authors
- Dung Van Dao; Nguyen, Thuy T. D.; Song, Hyeon-Yong; Yang, Jin-Kyu; Kim, Tae-Won; Yu, Yeon-Tae; Lee, In-Hwan
- Issue Date
- 5-12월-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Ag nanoparticles; CeO2; Ionic liquid; Photocatalysis; Dye
- Citation
- MATERIALS & DESIGN, v.159, pp.186 - 194
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS & DESIGN
- Volume
- 159
- Start Page
- 186
- End Page
- 194
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/71237
- DOI
- 10.1016/j.matdes.2018.08.042
- ISSN
- 0264-1275
- Abstract
- As a good stabilizer, [BMIM]BF4 ionic liquid (IL) has been successfully utilized to assist preparation of Ag nanoparticles (NPs) decorated on CeO2 supports. The obtained IL-stabilized Ag-CeO2 nanocomposite showed better photocatalytic degradation activity (92%) of Auramine O (AO) dye as compared with pure CeO2 (35%) NPs and IL-free Ag-CeO2 (65%) nanocomposite after 90 min of visible light irradiation. The improvement could be attributable to small size (5 nm) of IL-stabilized Ag NPs loaded on the surface of CeO2 supports and the large surface area of its nanocomposite (11.11 m(2)/g). These increase in the interfacial contact areas between IL-stabilized Ag NPs and CeO2 supports that enhance the charge transfer and reduce the recombination of the photogenerated electronhole pairs. Further, the IL-stabilized Ag-CeO2 nanocomposite showed good photocatalytic stability for dye degradation. The persuasible mechanism of enhanced photocatalytic degradation of AO was clearly discussed on the basis of localized surface plasmon resonance (LSPR) effect of Ag NPs as well. Accordingly, this work can pave new pathway to prepare nanoparticles coated on metal oxide nanostructures for the practical applications. (C) 2018 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.