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Nitrogen‐Enriched Fe 3 O 4 @Carbon Nanospheres Derived from Fe 3 O 4 @3‐Aminophenol/Formaldehyde Resin Nanospheres Based on a Facile Hydrothermal Strategy: Towards a Robust Catalyst Scaffold for Platinum Nanocrystals
Author(s) -
Tian Kesong,
Guo Wanchun,
Zhao Xiaoqing,
Xu Zhaopeng,
Jiao Jiao,
Jia Yin,
Li Ruifei,
Wang Haiyan
Publication year - 2015
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201500638
Subject(s) - catalysis , materials science , carbon fibers , nanomaterial based catalyst , dispersity , chemical engineering , nanocapsules , bimetallic strip , aqueous solution , nanocomposite , hydrothermal circulation , formaldehyde , nanoparticle , nanocrystal , inorganic chemistry , nanotechnology , chemistry , organic chemistry , polymer chemistry , composite material , composite number , engineering
Robust nitrogen‐enriched Fe 3 O 4 @carbon nanospheres have been fabricated as a catalyst scaffold for Pt nanoparticles. In this work, core–shell Fe 3 O 4 @3‐aminophenol/formaldehyde (APF) nanocomposites were first synthesized by a simple hydrothermal method, and subsequently carbonized to Fe 3 O 4 @N‐Carbon nanospheres for in situ growth of Pt nanocrystals. Abundant amine groups were distributed uniformly onto Fe 3 O 4 @N‐Carbon nanospheres, which not only improved the dispersity and stability of the Pt nanocrystals, but also endowed the Pt‐based catalysts with good compatibility in organic solvents. The dense three‐dimensional cross‐linked carbon shell protects the Fe 3 O 4 cores against damage from harsh chemical environments, even in aqueous HCl (up to 1.0 m ) or NaOH (up to 1.0 m ) solutions under ultrasonication for 24 hours, which indicates that it can be used as a robust catalyst scaffold. In the reduction of nitrobenzene compounds, the Fe 3 O 4 @N‐Carbon@Pt nanocatalysts show outstanding catalytic activity, stability, and recoverability.