Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 379, Issue -, Pages 89-93Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.04.036
Keywords
Palladium; Polypyrrole; Nanocapsules; Catalytic reduction
Categories
Funding
- National 973 Project [S2009061009]
- National Natural Science Foundation of China [20904015, 50973038]
- Jilin Science and Technology Department Project [20100101, 201115014]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials [sklssm201221]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University
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In this study, a facile one-step redox polymerization method for the preparation of highly dispersed palladium (Pd)/polypyrrole (PPy) nanocapsules has been demonstrated. During the polymerizaion process, the formation of RB - PdCl42- complex via an electrostatic interaction plays a key role for the preparation of Pd/PPy composite nanocapsules. The well-dispersed Pd nanocrystals with small sizes of 2-4 nm embedded in PPy nanocapsules exhibited a good catalytic activity during the catalytic reduction of p-nitrophenol into p-aminophenol by NaBH4 in aqueous solution. The kinetic apparent rate constant (k(app)) was about 8.87 x 10(-3) s(-1). Moreover, the as-prepared Pd/PPy composite nanocapsules exhibited a good reusability, which could be repeatedly used for the reduction of p-nitrophenol with a high catalytic activity for at least 10 successive cycles. (C) 2012 Elsevier Inc. All rights reserved.
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