Constructing magnetic Fe3O4-Au@CeO2 hybrid nanofibers for selective catalytic degradation of organic dyes
Sihui Chen
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorShi Qiu
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Department of Pharmaceutical Engineering, College of Humanities and Information, Changchun University of Technology, 1016 Fuzhi Road, Jingyue High-tech Industrial Development Zone, Changchun, China
Search for more papers by this authorMengxiao Zhong
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorDi Tian
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorCe Wang
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorCorresponding Author
Xiaofeng Lu
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Correspondence
Xiaofeng Lu, Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Email: [email protected]
Search for more papers by this authorSihui Chen
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorShi Qiu
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Department of Pharmaceutical Engineering, College of Humanities and Information, Changchun University of Technology, 1016 Fuzhi Road, Jingyue High-tech Industrial Development Zone, Changchun, China
Search for more papers by this authorMengxiao Zhong
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorDi Tian
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorCe Wang
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Search for more papers by this authorCorresponding Author
Xiaofeng Lu
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China
Correspondence
Xiaofeng Lu, Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Email: [email protected]
Search for more papers by this authorAbstract
Au nanoparticles (Au NPs) play a vital role in heterogeneous catalytic reactions. However, pristine Au NPs usually suffer from poor selectivity and difficult recyclability. In this work, Fe3O4-Au@CeO2 hybrid nanofibers were prepared via a simple one-pot redox reaction between HAuCl4 and Ce (NO3)3 in the presence of Fe3O4 nanofibers. CeO2 shell was uniformly coated on the surface of Fe3O4 nanofibers to form a unique core-shell structure, while Au NPs were encapsulated inside the CeO2 shell. The as-prepared Fe3O4-Au@CeO2 hybrid nanofibers have been proved to be positively surface charged due to the formation of CeO2 shell, enabling them to be good candidates for predominant selective catalytic activity towards the degradation of negatively charged organic dyes. In addition, the Fe3O4-Au@CeO2 hybrid nanofibers showed magnetic properties, offering them excellent recyclable usability. This work presents a facile and effective solution to prepare magnetic noble metal/metal oxide hybrid nanomaterials with unique chemical structure and surface characteristic for promising applications in heterogeneous catalysis.
CONFLICT OF INTEREST
There are no conflicts to declare.
Supporting Information
| Filename | Description |
|---|---|
| aoc5253-supp-001-Supporting_Information.docxWord 2007 document , 1.2 MB |
FIGURE S1 (a) SEM, (b) TEM image of Fe3O4@CeO2 hybrid nanofibers; (c) SEM, (d) TEM image of Fe3O4-Au hybrid nanofibers FIGURE S2 N2 adsorption–desorption isotherm of (a) Fe3O4@CeO2 hybrid nanofibers, (c) Fe3O4-Au hybrid nanofibers; corresponding pore size distribution curve of (b) Fe3O4@CeO2 hybrid nanofibers, (d) Fe3O4-Au hybrid nanofibers FIGURE S3 UV–Vis spectra of the degradation of (a) Orange II and (b) RhB in 15 min in the absence of catalyst FIGURE S4 Time-dependent absorbance spectra for the catalytic degradation of (a) Orange II and (b) RhB catalyzed by Fe3O4@CeO2 hybrid FIGURE S5 Time-dependent absorbance spectra for the catalytic degradation of (a) Orange II and (b) RhB catalyzed by Fe3O4-Au hybrid; (c) catalytic conversion of each cycle for Fe3O4-Au hybrid |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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