Record Details

Fluorescent N-doped Carbon Dot-Copper and Silver Nanocomposite - An effective uric acid sensor

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Fluorescent N-doped Carbon Dot-Copper and Silver Nanocomposite - An effective uric acid sensor
 
Creator Sam, Dona Mary
T, Mary Vergheese
 
Subject Copper/N-doped carbon dot
N-doped carbon dots
Silver/N-doped carbon dots
Uric acid sensor
 
Description 590-601
Green fluorescent Nitrogen doped Carbon Dots ( N-CDs) was synthesized by solvent free pyrolysis technique . Using the
synthesized N-CDs, for first time we report the synthesis of Blue fluorescent Nitrogen doped silver and copper carbon dot
nano composite using a Simple, Solvent free Green method. The N-CDs function as reducing agent to reduce Ag+ and Cu2+
ions to Ag0 and Cu0 which leads to the formation of composite. The synthesized N-CDs and nano composites were applied
as Uric Acid(UA) sensor. N-CDs and the composites function as a flurophore in the recognition of Uric acid.Both the
N-CDs and the composites were characterized using UV-Vis, FTIR, SEM-EDX, TEM and PL spectroscopic techniques. The
UV-Vis and FTIR response of N-CDs in comparison with N-doped silver and N-doped copper carbon dot composites
confirms that the surface functional groups on N-CDs have been used in the formation of silver and copper carbon dot
composite Thesurface morphology and elemental composition of synthesized carbon dots and its nanocomposites were
identified using SEM-EDAX analysis. High resolution transmission electron microscopy (HR-TEM) analysis shows that
N-Cdot are spherical in shape with an average size of 15.23 nm, Cu/N-Cdot composite is found to be spherical and the size
to be in the range of 18.02 nm and Ag/N-Cdot composite is found to be spherical and the size of the composite is found to
be 16.40 nm. The PL spectra was also observed for Cu/N-Cdots, Ag/N-Cdots. With addition of Uric acid there was a quench
in fluorescence which is immediately visible by our naked eye The quench in fluorescence is due to the synergistic effect
between the fluorescence Inner Filter Effect (IFE) and the static quenching effect, with a Lower detection limit (LDL) of
4µM thus functioning as a highly rapid UA biosensor.Simple naked eye observation and the absence of catalytic effect by
the metal ion in the detection of UA are the merits of the present study.
 
Date 2021-12-07T05:02:53Z
2021-12-07T05:02:53Z
2021-12
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/58595
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJBB Vol.58(6) [December 2021]