Open AccessSimple strategy for fabricating a Prussian blue/chitosan/carbon nanotube composite and its application for the sensitive determination of hydrogen peroxide
Author(s) -
Wang Cong,
Zhang Keying,
Zhang Na,
Zhang Li,
Wang Hongyan,
Xu Jigui,
Shi Hongwei,
Zhuo Xin,
Qin Miao,
Wu Xingxing
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0376
Subject(s) - prussian blue , hydrogen peroxide , carbon nanotube , amperometry , fourier transform infrared spectroscopy , detection limit , chitosan , materials science , composite number , chemical engineering , electrochemistry , nuclear chemistry , electrochemical gas sensor , electrode , nanotechnology , analytical chemistry (journal) , chemistry , chromatography , composite material , organic chemistry , engineering
A simple strategy was presented for fabricating a Prussian blue (PB)/chitosan (CHIT)/multi‐walled carbon nanotube (MWCNT) composite. A simple chemical reaction was used to form PB nanoparticles on the surface of an electrode modified with CHIT–MWCNTs. Scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize the composite. PB–CHIT–MWCNTs were employed to construct an electrochemical hydrogen peroxide (HP) sensor. Tests showed that the sensor exhibited excellent electrocatalytic ability toward the reduction of HP. The amperometric response was linear with concentrations of HP in the range of 1.0 µM–0.5 mM, with a detection limit of 0.1 μM (S/N = 3). In addition, this sensor showed excellent selectivity, reproducibility, and stability, and it was satisfactorily applied for HP detection in real samples.