Premium
Constructing magnetic Fe 3 O 4 ‐Au@CeO 2 hybrid nanofibers for selective catalytic degradation of organic dyes
Author(s) -
Chen Sihui,
Qiu Shi,
Zhong Mengxiao,
Tian Di,
Wang Ce,
Lu Xiaofeng
Publication year - 2019
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5253
Subject(s) - catalysis , nanofiber , nanomaterials , chemistry , nanoparticle , chemical engineering , hybrid material , oxide , selectivity , heterogeneous catalysis , nanotechnology , metal , redox , transition metal , bimetallic strip , inorganic chemistry , materials science , organic chemistry , engineering
Au nanoparticles (Au NPs) play a vital role in heterogeneous catalytic reactions. However, pristine Au NPs usually suffer from poor selectivity and difficult recyclability. In this work, Fe 3 O 4 ‐Au@CeO 2 hybrid nanofibers were prepared via a simple one‐pot redox reaction between HAuCl 4 and Ce (NO 3 ) 3 in the presence of Fe 3 O 4 nanofibers. CeO 2 shell was uniformly coated on the surface of Fe 3 O 4 nanofibers to form a unique core‐shell structure, while Au NPs were encapsulated inside the CeO 2 shell. The as‐prepared Fe 3 O 4 ‐Au@CeO 2 hybrid nanofibers have been proved to be positively surface charged due to the formation of CeO 2 shell, enabling them to be good candidates for predominant selective catalytic activity towards the degradation of negatively charged organic dyes. In addition, the Fe 3 O 4 ‐Au@CeO 2 hybrid nanofibers showed magnetic properties, offering them excellent recyclable usability. This work presents a facile and effective solution to prepare magnetic noble metal/metal oxide hybrid nanomaterials with unique chemical structure and surface characteristic for promising applications in heterogeneous catalysis.