Electrochemical Sensor for Cu(II) Based on Carbon Nanotubes Functionalized with a Rationally Designed Schiff Base
Chemosensors,
Journal Year:
2025,
Volume and Issue:
13(2), P. 35 - 35
Published: Jan. 25, 2025
This
work
proposes
a
new
strategy
for
the
electrochemical
quantification
of
Cu(II)
using
glassy
carbon
electrodes
(GCEs)
modified
with
nanohybrid
multiwall
nanotubes
(MWCNTs)
non-covalently
functionalized
rationally
designed
Schiff
base
containing
different
groups
(SB-dBA).
The
principle
sensing
was
complexation
by
that
supports
MWCNTs
at
open-circuit
potential,
followed
reduction
step
−0.600
V
and
further
linear
sweep
anodic
stripping
voltammetry
(LSASV)
in
0.200
M
acetate
buffer
solution
pH
5.00.
range
goes
from
10
to
200
μg
L−1,
sensitivity
(0.79
±
0.07)
µA
L
µg−1
(R2
=
0.991),
detection
limit
3.3
reproducibility
8.0%
same
(nine
electrodes)
9.0%
four
nanohybrids.
proposed
sensor
very
selective
even
presence
Pb(II),
Fe(II),
As(III),
Cr(III),
Cd(II),
Hg(II),
it
successfully
used
water
samples
(tap,
groundwater,
river)
without
any
pretreatment.
Language: Английский
Proton Relays in Molecular Catalysis for Hydrogen Evolution and Oxidation: Lessons From the Mimicry of Hydrogenases and Electrochemical Kinetic Analyses
Matthieu Haake,
No information about this author
Bertrand Reuillard,
No information about this author
Murielle Chavarot‐Kerlidou
No information about this author
et al.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(52)
Published: Nov. 18, 2024
Abstract
The
active
sites
of
metalloenzymes
involved
in
small
molecules
activation
often
contain
pendant
bases
that
act
as
proton
relay
promoting
proton‐coupled
electron‐transfer
processes.
Here
we
focus
on
hydrogenases
and
the
reactions
they
catalyze,
i.
e.
hydrogen
evolution
oxidation
reactions.
After
a
short
description
these
enzymes,
review
some
various
biomimetic
bioinspired
molecular
systems
relays.
We
then
provide
formal
electrochemical
framework
required
to
decipher
key
role
such
enhance
catalysis
single
direction
discuss
few
for
H
2
which
quantitative
kinetic
data
are
available.
finally
highlight
parameters
reach
bidirectional
(both
catalyzed)
transition
reversible
catalyzed
narrow
potential
range)
well
illustrate
features
from
literature.
Language: Английский
Proton Relays in Molecular Catalysis for Hydrogen Evolution and Oxidation: Lessons From the Mimicry of Hydrogenases and Electrochemical Kinetic Analyses
Matthieu Haake,
No information about this author
Bertrand Reuillard,
No information about this author
Murielle Chavarot‐Kerlidou
No information about this author
et al.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(52)
Published: Nov. 18, 2024
Abstract
The
active
sites
of
metalloenzymes
involved
in
small
molecules
activation
often
contain
pendant
bases
that
act
as
proton
relay
promoting
proton‐coupled
electron‐transfer
processes.
Here
we
focus
on
hydrogenases
and
the
reactions
they
catalyze,
i.
e.
hydrogen
evolution
oxidation
reactions.
After
a
short
description
these
enzymes,
review
some
various
biomimetic
bioinspired
molecular
systems
relays.
We
then
provide
formal
electrochemical
framework
required
to
decipher
key
role
such
enhance
catalysis
single
direction
discuss
few
for
H
2
which
quantitative
kinetic
data
are
available.
finally
highlight
parameters
reach
bidirectional
(both
catalyzed)
transition
reversible
catalyzed
narrow
potential
range)
well
illustrate
features
from
literature.
Language: Английский