Core/shell microcapsules consisting of Fe3O4 microparticles coated with nitrogen-doped mesoporous carbon for voltammetric sensing of hydrogen peroxide
Journal Title: | Mikrochimica acta (1966) 2017-09-07, Vol.184 (11), p.4513-4520 |
Main Author: | Qin, Zuojia |
Other Authors: | Zhao, Yu , Lin, Li , Zou, Ping , Zhang, Li , Chen, Hui , Wang, Ying , Wang, Guangtu , Zhang, Yunsong |
Format: |
![]() |
Language: |
English |
Subjects: | |
Publisher: | Vienna: Springer Vienna |
ID: | ISSN: 0026-3672 |
Zum Text: |
SendSend as email
Add to Book BagAdd to Book Bag
Staff View

recordid: | cdi_crossref_primary_10_1007_s00604_017_2497_4 |
title: | Core/shell microcapsules consisting of Fe3O4 microparticles coated with nitrogen-doped mesoporous carbon for voltammetric sensing of hydrogen peroxide |
format: | Article |
creator: |
|
subjects: |
|
ispartof: | Mikrochimica acta (1966), 2017-09-07, Vol.184 (11), p.4513-4520 |
description: | The authors describe the preparation of core/shell composites consisting of Fe 3 O 4 microparticles coated with nitrogen-doped mesoporous carbon. Synthesis was accomplished by simultaneous reduction of template α-Fe 2 O 3 and pyrolysis of a nitrogen-containing poly(ionic liquids). The mesoporous composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffractometry and adsorption/desorption isotherms. The characterizations prove successful formation of an Fe 3 O 4 core and an outer shell (coating) consisting of nitrogen-doped mesoporous carbon. The material was placed on a glassy carbon electrode and synergistic catalytic effect of of N-doping, the mesoporous, core/shell structure and two types of active sites properties between Fe 3 O 4 core and nitrogen-doped mesoporous carbon shell is shown to result in superior electrochemical activity towards the reduction of hydrogen peroxide. Figures of merit include (a) a sensitivity of 77.1 μA mM −1 cm −2 ; (b) a linear response over the 50 μM to 33 mM H 2 O 2 concentration range, (c) a 5.9 μM detection limit of (at an S/N ratio of 3), and (d) a low working voltage of −0.4 V (vs. saturated calomel electrode) which makes the method more selective. Graphical abstract Electrochemical method for H 2 O 2 detection based on Fe 3 O 4 @nitrogen-doped mesoporous carbon microcapsules core/shell composites (Fe 3 O 4 @NMCMs), prepared by the polymerization of the ionic liquids (1-Allyl-3-ethylimidazolium tetrafluoroborate, [AEIm]BF 4 ) monomer (PILs) on the surface of α-Fe 2 O 3 nano-peanuts and then pyrolysis. |
language: | eng |
source: | |
identifier: | ISSN: 0026-3672 |
fulltext: | no_fulltext |
issn: |
|
url: | Link |
@attributes |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PrimoNMBib |
|