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Microfluidic Synthesis Enables Dense and Uniform Loading of Surfactant‐Free PtSn Nanocrystals on Carbon Supports for Enhanced Ethanol Oxidation
Author(s) -
Wu Fuxiang,
Zhang Dongtang,
Peng Manhua,
Yu Zhihui,
Wang Xiayan,
Guo Guangsheng,
Sun Yugang
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201600081
Subject(s) - catalysis , materials science , carbon fibers , chemical engineering , proton exchange membrane fuel cell , graphene , carbon black , nanoparticle , pulmonary surfactant , carbon nanotube , nanotechnology , chemistry , organic chemistry , composite material , composite number , natural rubber , engineering
Developing new synthetic methods for carbon supported catalysts with improved performance is of fundamental importance in advancing proton exchange membrane fuel cell (PEMFC) technology. Continuous‐flow, microfluidic reactions in capillary tube reactors are described, which are capable of synthesizing surfactant‐free, ultrafine PtSn alloyed nanoparticles (NPs) on various carbon supports (for example, commercial carbon black particles, carbon nanotubes, and graphene sheets). The PtSn NPs are highly crystalline with sizes smaller than 2 nm, and they are highly dispersed on the carbon supports with high loadings up to 33 wt %. These characteristics make the as‐synthesized carbon‐supported PtSn NPs more efficient than state of the art commercial Pt/C catalysts applied to the ethanol oxidation reaction (EOR). Significantly enhanced mass catalytic activity (two‐times that of Pt/C) and improved stability are obtained.