期刊
APPLIED SURFACE SCIENCE
卷 435, 期 -, 页码 72-78出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.11.082
关键词
Heterostructures; Ag@Cu2O-Au; Catalytic; 4-Nitrophenol
类别
资金
- National Natural Science Foundation of China [61575080, 61405072, 21676115, 51609100, 21546013]
- Program for the development of Science and Technology of Jilin province [20150519024JH, 20150520015JH, 20160101287JC, 20140519003JH]
- Technology of Education Department of Jilin Province [2016-217]
- National Research Foundation of Korea [NRF-2017K2A9A2A06014372]
- National Research Foundation of Korea [22A20151613032] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We successfully synthesized Au-decorated Ag@Cu2O heterostructures via a simple galvanic replacement method. As the Au precursor concentration increased, the density of the Au nanoparticles (NPs) on the Ag@Cu2O surface increased, which changed the catalytic activity of the Ag@Cu2O-Au structure. The combination of Au, Ag, and Cu2O exhibited excellent catalytic properties, which can further effect on the catalyst activity of the Ag@Cu2O-Au structure. In addition, the proposed Ag@Cu2O-Au nanocomposite was used to transform the organic, toxic pollutant, 4-nitrophenol (4-NP), into its nontoxic and medicinally important amino derivative via a catalytic reduction to optimize the material performance. The proposed Au-decorated Ag@Cu2O exhibited excellent catalytic activity, and the catalytic reduction time greatly decreased (5 min). Thus, three novel properties of Ag@Cu2O-Au, i.e., charge redistribution and transfer, adsorption, and catalytic reduction of organic pollutants, were ascertained for water remediation. The proposed catalytic properties have potential applications for photocatalysis and localized surface plasmon resonance (LSPR)- and peroxidase-like catalysis. (c) 2017 Elsevier B.V. All rights reserved.
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