Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 453, Issue -, Pages 36-41Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2015.03.066
Keywords
Ag@Ag3PO4@ZnO; Ternary heterostructures; 1D core-shell; Photocatalysis
Categories
Funding
- National Natural Science Foundation [21273161, 21101117]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Shanghai Innovation Program [13ZZ026]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars of SEM
- Fundamental Research Funds for the Central Universities
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [81221001]
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In this article, we report a novel Ag@Ag3PO4@ZnO ternary heterostructures synthesized through a three-step approach. Firstly, single-crystalline Ag nanorods are fabricated and served as the templates for subsequent Ag3PO4 deposition. Secondly, Ag3PO4 crystals are grown around Ag core nanorods through a solution co-precipitation process, leading to the Ag@Ag3PO4 binary heterostructures. Finally, ZnO nanorod arrays on the surface of the Ag@Ag3PO4 heterostructures are realized via a seeded growth strategy, forming the typical Ag@Ag3PO4@ZnO ternary heterostructures. The photodegradation of rhodamine B under ultraviolet-visible light irradiation indicates that the Ag@Ag3PO4@ZnO ternary heterostructures exhibit much higher activities than pure Ag3PO4 and binary heterostructures of Ag@Ag3PO4. The higher photocatalytic activity of the Ag@Ag3PO4@ZnO composites may be attributed to the effective photogenerated charge separation at heterointerfaces of Ag/Ag3PO4 and Ag3PO4/ZnO, and the rapid electron transport along one-dimensional Ag and ZnO nanorods. (C) 2015 Elsevier Inc. All rights reserved.
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