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Nanomaterials (Basel). 2018 May 22;8(5). pii: E353. doi: 10.3390/nano8050353.

Enhanced Catalytic Reduction of 4-Nitrophenol Driven by Fe₃O₄-Au Magnetic Nanocomposite Interface Engineering: From Facile Preparation to Recyclable Application.

Chen Y1,2, Zhang Y3,4, Kou Q5,6, Liu Y7,8, Han D9, Wang D10, Sun Y11,12, Zhang Y13,14, Wang Y15,16, Lu Z17, Chen L18,19, Yang J20,21, Xing SG22.

Author information

1
College of Physics, Jilin Normal University, Siping 136000, China. 17649973053@163.com.
2
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. 17649973053@163.com.
3
College of Physics, Jilin Normal University, Siping 136000, China. 13944139606@163.com.
4
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. 13944139606@163.com.
5
College of Physics, Jilin Normal University, Siping 136000, China. 13944949603@163.com.
6
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. 13944949603@163.com.
7
College of Physics, Jilin Normal University, Siping 136000, China. liuyang@jlnu.edu.cn.
8
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. liuyang@jlnu.edu.cn.
9
School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China. dlhan_1015@cust.edu.cn.
10
Technology Development Department, GLOBALFOUNDRIES (Singapore) Pte. Ltd., 60 Woodlands Industrial Park D, Street 2, Singapore 738406, Singapore. DANDAN.WANG@globalfoundries.com.
11
College of Physics, Jilin Normal University, Siping 136000, China. syt@jlnu.edu.cn.
12
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. syt@jlnu.edu.cn.
13
College of Physics, Jilin Normal University, Siping 136000, China. yjzhang@jlnu.edu.cn.
14
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. yjzhang@jlnu.edu.cn.
15
College of Physics, Jilin Normal University, Siping 136000, China. wangyaxin1010@126.com.
16
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. wangyaxin1010@126.com.
17
School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. lzy@mail.ujs.edu.cn.
18
College of Physics, Jilin Normal University, Siping 136000, China. chenlei@jlnu.edu.cn.
19
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. chenlei@jlnu.edu.cn.
20
College of Physics, Jilin Normal University, Siping 136000, China. jhyang1@jlnu.edu.cn.
21
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. jhyang1@jlnu.edu.cn.
22
United Microelect Corp. Ltd., 3 Pasir Ris Dr 12, Singapore 519528, Singapore. guozhongupenn@gmail.com.

Abstract

In this work, we report the enhanced catalytic reduction of 4-nitrophenol driven by Fe₃O₄-Au magnetic nanocomposite interface engineering. A facile solvothermal method is employed for Fe₃O₄ hollow microspheres and Fe₃O₄-Au magnetic nanocomposite synthesis via a seed deposition process. Complementary structural, chemical composition and valence state studies validate that the as-obtained samples are formed in a pure magnetite phase. A series of characterizations including conventional scanning/transmission electron microscopy (SEM/TEM), Mössbauer spectroscopy, magnetic testing and elemental mapping is conducted to unveil the structural and physical characteristics of the developed Fe₃O₄-Au magnetic nanocomposites. By adjusting the quantity of Au seeds coating on the polyethyleneimine-dithiocarbamates (PEI-DTC)-modified surfaces of Fe₃O₄ hollow microspheres, the correlation between the amount of Au seeds and the catalytic ability of Fe₃O₄-Au magnetic nanocomposites for 4-nitrophenol (4-NP) is investigated systematically. Importantly, bearing remarkable recyclable features, our developed Fe₃O₄-Au magnetic nanocomposites can be readily separated with a magnet. Such Fe₃O₄-Au magnetic nanocomposites shine the light on highly efficient catalysts for 4-NP reduction at the mass production level.

KEYWORDS:

4-nitrophenol; Fe3O4 hollow microspheres; Fe3O4-Au magnetic nanocomposites; catalytic reduction

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