Hydrothermal synthesis of nitrogen and copper co-doped carbon dots with intrinsic peroxidase-like activity for colorimetric discrimination of phenylenediamine isomers.

Authors:
Liping Lin
Liping Lin
Shanghai Institute of Materia Medica
China
Yanling Xiao
Yanling Xiao
The Netherlands Cancer Institute
London | United Kingdom
Yuhan Wang
Yuhan Wang
College of Plant Sciences
China
Yongnian Zeng
Yongnian Zeng
Central South University
China
Xi Chen
Xi Chen
State Key Laboratory of Pharmaceutical Biotechnology
China

Mikrochim Acta 2019 Apr 15;186(5):288. Epub 2019 Apr 15.

State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China.

Carbon dots doped with nitrogen and copper have been synthesized via a hydrothermal method. They possess favorable peroxidase-like catalytic activity over a wide range of pH values and temperatures. Specifically, they were used to catalyze the oxidation of ortho- and para-phenylenediamine (OPD and PPD) by HO. The resulting products possess different colors (yellow for OPD and brown for PPD), which can be visually discriminated. The corresponding typical absorption peaks of oxidized products for OPD and PPD are at 413 nm and 500 nm, respectively. The method displays excellent discrimination ability and selectivity over potential interferents. The detection limits are 1.1 μM for OPD and 1.9 μM for PPD. The respective linear ranges are from 5 to 200 μM for OPD and from 2.5 to 700 μM for PPD. The method was applied to the quantification of OPD and PPD in spiked natural waters. Graphical abstract Schematic presentation of the synthesis of nitrogen and copper co-doped carbon dots (N,Cu-CDs) and their application as an enzyme mimic for colorimetric discrimination of ortho-, meta- and para-phenylenediamine (OPD, MPD and PPD).

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00604-019-3404-yDOI Listing
April 2019

Publication Analysis

Top Keywords

nitrogen copper
12
carbon dots
12
opd ppd
12
co-doped carbon
8
colorimetric discrimination
8
copper co-doped
8
para-phenylenediamine opd
8
synthesis nitrogen
8
ppd
7
opd
7
abstract schematic
4
typical absorption
4
absorption peaks
4
discriminated corresponding
4
corresponding typical
4
graphical abstract
4
413 nm 500 nm
4
ppd 413 nm
4
products opd
4
oxidized products
4

References

(Supplied by CrossRef)
Article in Anal Methods
ZY Yan et al.
Anal Methods 2015
Article in Spectrochim Acta A
N Li et al.
Spectrochim Acta A 2015
Article in Sensors Actuators B Chem
K Ngamdee et al.
Sensors Actuators B Chem 2012
Article in Appl Catal A Gen
A Nezamzadeh-Ejhieh et al.
Appl Catal A Gen 2010
Article in J Nanosci Nanotechnol
SJ Lee et al.
J Nanosci Nanotechnol 2017
Article in Microchim Acta
PY Ma et al.
Microchim Acta 2014
Article in Anal Bioanal Chem
SQ Dong et al.
Anal Bioanal Chem 2008
Article in Microchem J
FF Hudari et al.
Microchem J 2014
Article in Talanta
DD Guo et al.
Talanta 2017
Article in Nanoscale
BF Shi et al.
Nanoscale 2016
Article in Anal Chem
R Maria-Hormigos et al.
Anal Chem 2018

Similar Publications