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One-pot synthesis of highly branched Pt@Ag core-shell nanoparticles as a recyclable catalyst with dramatically boosting the catalytic performance for 4-nitrophenol reduction

Author:
Lv, Zhi-Suo, Zhu, Xiao-Yan, Meng, Han-Bin, Feng, Jiu-Ju, Wang, Ai-Jun
Source:
Journal of colloid and interface science 2019 v.538 pp. 349-356
ISSN:
0021-9797
Subject:
catalysts, catalytic activity, ethyleneimine, nanoparticles, nanosilver, p-nitrophenol, platinum, remediation, synthesis
Abstract:
Herein, highly branched Pt@Ag core-shell nanoparticles (Pt@Ag NPs) were fabricated by a facile one-pot wet-chemical approach, where poly(ethyleneimine) (PEI) served as structure-directing and capping agents. Their structure, morphology and composition were mainly characterized by a set of techniques. And their growth mechanism was discussed in some detail. The prepared catalyst exhibited remarkable enhancement in catalytic activity of 4-nitrophenol (4-NP) reduction as a proof-of-concept application, surpassing commercial Pt black and home-made Ag NPs catalysts. Also, the as-obtained catalyst showed superior stability without sacrificing the catalytic activity. These observations endow the catalyst possibility for practical applications in nitrophenols environmental remediation.
Agid:
6250755