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Nanoparticles: Galvanic Displacement Synthesis of Monodisperse Janus- and Satellite-Like Plasmonic-Magnetic Ag-Fe@Fe 3 O 4 Heterostructures with Reduced Cytotoxicity (Adv. Sci. 8/2018)

Wiley
Advanced Science
Authors:
Huilin Zhang
Huilin Zhang
Huilin Zhang
  • This person is not on ResearchGate, or hasn't claimed this research yet.
Ziyu Yang
Ziyu Yang
Ziyu Yang
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Yanmin Ju
Yanmin Ju
Yanmin Ju
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Xin Chu at Peking University
Xin Chu
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Abstract

Lattice mismatch is a key obstacle for synthesizing heterostructures with desired constituents. In article number 1800271, Xintai Su, Yanglong Hou, and co‐workers develop a facile method to synthesize Janus‐ and satellite‐like Ag‐Fe@Fe3O4 heterostructures, which as a galvanic couple can reduce the cytotoxicity of Ag while maintaining controlled magnetic and optical properties.
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NANOPARTICLES
Lattice mismatch is a key obstacle
for synthesizing heterostructures
with desired constituents. In
article number 1800271, Xintai Su,
Yanglong Hou, and co-workers
develop a facile method to
synthesize Janus- and satellite-like
Ag-Fe@Fe3O4 heterostructures,
which as a galvanic couple can
reduce the cytotoxicity of Ag while
maintaining controlled magnetic
and optical properties.
ADVS-5-8-Frontispiece.indd 2 06/08/18 3:35 PM
Three-Dimensional Hierarchical Flower-Like Fe3O4 Porous Microstructure Decorated with Au Nanoparticles: Synthesis and Application for Sensitive Electrochemical Detection of Chloramphenicol
Article
  • Aug 2022
An electrochemical sensor based on the three-dimensional flower-like Fe3O4/Au porous microstructure to determine chloramphenicol (CAP) was successfully fabricated. This microstructure was synthesized hydrothermally with controlled reaction time in the presence of urea and decorated with Au nanoparticles via a simple chemical reduction method. The as-synthesized Fe3O4 and Fe3O4/Au porous microstructures were characterized by using scanning electron microscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy, elemental mapping, x-ray diffraction, nitrogen adsorption/desorption isotherms, UV–visible spectroscopy (UV–VIS), Fourier transform infrared spectroscopy, and electrochemical impedance spectroscopy. The electrochemical performance of the sensor was investigated with cyclic voltammetry and differential pulse voltammetry. The sensor exhibits excellent stability, reproducibility, and repeatability with a low CAP detection limit of 0.14 µM and a linear range of 1.0 to 12 µM. More importantly, it can be employed to determine chloramphenicol in the urine samples.
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