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Surfactant‐Guided Synthesis of Porous Pt Shells with Ordered Tangential Channels, Coated on Pd Nanostructures, and Their Enhanced Catalytic Activities
Author(s) -
Wang Qishun,
Li Junqi,
Wang Xiao,
Liu Yu,
Long Yan,
Li Jian,
Pan Jing,
Song Shuyan,
Zhang Hongjie
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201803056
Subject(s) - materials science , nitrobenzene , catalysis , ammonium bromide , nanostructure , porosity , chemical engineering , nanoparticle , molar ratio , bromide , layer (electronics) , pulmonary surfactant , shell (structure) , nanotechnology , inorganic chemistry , composite material , chemistry , organic chemistry , engineering
High‐quality (Pd cube)@(Pt helix) core@shell nanoparticles, with a novel spiral‐structured shell and highly‐ordered tangential channels are successfully fabricated through a facile wet chemistry method with the help of N , N ‐dimethyloctadecyl ammonium bromide acetate sodium (OTAB‐Na). A bottom‐up synthesis strategy provides accurate control of layers by simply changing the molar ratio of Pt/Pd with a uniform layer thickness of 2 nm maintained in all (1–3)‐rounds samples. The irregular Pt superstructures of the shells, and sophisticated core@shell hybrid materials endow the as‐produced samples with highly enhanced catalytic properties, when evaluated for hydrogenation of nitrobenzene as a probe reaction.
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