We
prepared
fragments
of
polymeric
g-C3N4
sheets
functionalized
with
cyamelurate-like
functional
groups,
evaluated
their
Fenton-like
catalytic
properties
and
proposed
a
reaction
mechanism
for
the
formation
hydroxyl
radicals
on
surface
materials
in
presence
H2O2.
The
controlled
fragmentation/functionalization
was
characterized
by
variety
techniques
including
SEM,
TEM,
FTIR
potentiometric
titration.
performance
catalysts
proved
to
be
dependent
both
groups
conjugated
structure
sheets,
kinetics
catalyzed
being
faster
at
higher
pH.
In
addition,
absence
contaminant,
no
significant
consumption
hydrogen
peroxide
observed.
oxidizing
elucidated
using
cyclic
voltammetry
EPR
spectroscopy
parallel
theoretical
calculations
based
estimate
Gibbs
free
energy
HO•
HOO•
formation,
generated
through
peroxide.
broader
context,
results
shown
here
may
contribute
development
strategies
studying
elucidating
mechanisms
involving
metal-free
catalysts,
one
main
challenges
area
and,
enabling
designing
different
oxidation
reactions.
Small,
Journal Year:
2024,
Volume and Issue:
20(31)
Published: March 10, 2024
Abstract
A
major
issue
with
Fenton‐like
reaction
is
the
excessive
consumption
of
H
2
O
caused
by
sluggish
regeneration
rate
low‐valent
metal,
and
how
to
improve
activation
efficiency
has
become
a
key
in
current
research.
Herein,
nano‐heterostructure
catalyst
(1.0‐MnCu/C)
based
on
nano‐interface
engineering
constructed
supporting
Cu
MnO
carbon
skeleton,
its
kinetic
for
degradation
tetracycline
hydrochloride
0.0436
min
−1
,
which
2.9
times
higher
than
that
Cu/C
system
(0.0151
).
The
enhancement
removal
results
from
introduced
Mn
species
can
aggregate
transfer
electrons
sites
through
electron
bridge
Mn−N/O−Cu,
thus
preventing
2+
oxidizing
form
•−
facilitating
reduction
generating
more
reactive
oxygen
(
1
·OH)
stronger
oxidation
ability,
resulting
utilization
1.9
as
much
Cu/C.
Additionally,
good
stable
practical
application
capacity
different
bodies
demonstrates
it
great
potential
environmental
remediation.
