Catalysts,
Journal Year:
2024,
Volume and Issue:
14(12), P. 874 - 874
Published: Nov. 29, 2024
In
this
study,
biochar-loaded
E3+:BiOCl
(C/3E3+:BiOCl)
was
synthesized
with
varying
levels
of
E3+
doping
using
a
one-step
solvothermal
method
and
used
for
tetracycline
hydrochloride
(TC-HCl)
degradation.
Their
structure,
shape
morphology
were
not
only
characterized
by
power
X-ray
diffraction
(XRD),
scanning
electron
microscope
(SEM)
transmission
microscopy
(TEM)
but
also
UV-vis
diffuse
reflectance
spectra
upconversion
(UC).
The
results
indicated
significant
enhancement
in
the
photocatalytic
activity
catalyst
following
introduction
Er3+.
composite
material
C/3E3+:BiOCl,
concentration
3
mol%,
demonstrated
highest
activity,
achieving
an
impressive
visible
light
degradation
efficiency
89.2%
TC
HCl
within
90
min.
This
marks
increase
33.5%
compared
to
BiOCl
monomer
17.4%
C/BiOCl.
Additionally,
when
exposed
wavelengths
exceeding
600
nm,
C/3E3+:BiOCl
maintained
photodegradation
44.3%,
while
C/BiOCl
showed
no
under
same
conditions.
finding
highlights
effectiveness
as
matrix,
which
enhances
performance
through
effect
transfer
mechanisms
associated
biochar.
Catalysts,
Journal Year:
2025,
Volume and Issue:
15(2), P. 192 - 192
Published: Feb. 19, 2025
Developing
a
catalyst
with
excellent
electrical
conductivity
and
catalytic
performance
for
on-site
testing
of
residual
imidacloprid
is
significant
challenging.
In
situ
growth
Mo2C
nanodots
on
Co-induced
N-doped
carbon
nanotubes
(Co/Mo2C/N-CNT)
was
synthesized
to
construct
molecularly
imprinted
electrochemical
sensor
the
detection
imidacloprid.
The
results
proved
that
Co/Mo2C/N-CNT
over
two
times
higher
than
those
Co/N-CNT
commercial
CNT.
This
improvement
attributed
formation
heterostructure
between
Co
species,
Mo2C,
N-CNT,
which
facilitated
highly
exposed
active
sites.
Additionally,
abundant
nano-dots
promoted
interfacial
charge
transfer
achieve
optimal
dynamics.
optimum
preparation
parameters
catalysts
were
obtained
by
response
surface
methodology.
By
analyzing
relationship
different
pH
values
peak
potential,
as
well
influence
scanning
rates
it
deduced
possible
electrocatalytic
mechanism
involved
reduction
nitro
group
hydroxylamine
H2O.
Under
conditions,
limit
(LOD)
0.033
×
10−6
mol·L−1
(R2
=
0.99698),
linear
range
0.1
10−6~100
mol·L−1.
application
effect
prepared
evaluated
measuring
in
kinds
tea,
indicating
possessed
good
sensitivity
selectivity,
capable
meeting
requirements
detection.
Catalysts,
Journal Year:
2025,
Volume and Issue:
15(5), P. 408 - 408
Published: April 22, 2025
The
transformation
of
abundant
and
cost-effective
CO2
molecules
into
valuable
chemical
feedstocks
or
fuels
represents
an
appealing
yet
challenging
research
objective.
Artificial
photosynthesis
offers
a
promising
pathway
for
reduction
reactions
(CO2RR)
under
mild
environmentally
friendly
conditions.
Graphitic
carbon
nitride
(g-C3N4)
has
attracted
significant
attention
its
potential
to
enhance
the
efficiency
selectivity
CO2RR
through
synthesis
modification
strategies.
This
review
explores
recent
advancements
in
g-C3N4
hybrid
photocatalysts
selective
conversions.
We
examine
key
factors
influencing
product
selectivity,
including
electron
count
reaction
dynamics,
intermediates
adsorption/desorption,
proton
regulation
affecting
competitive
hydrogen
evolution.
By
summarizing
various
strategies
photoreduction
performance,
this
work
provides
comprehensive
analysis
mechanisms
each
approach.
aims
inspire
endeavors
towards
developing
efficient
artificial
systems
enhanced
selectivity.
Single-atom
catalysts
(SACs)
are
prone
to
agglomeration
or
migration
during
catalytic
processes,
making
the
development
of
highly
dispersible
SACs
greatly
essential
for
performance
photocatalytic
CO2
reduction.
Herein,
cobalt-containing
keto-enamine
covalent
organic
frameworks
(COFs)
(Co/TpPa-1)
successfully
in
situ
synthesized
by
utilizing
interlayer
nitrogen
atom
coordinated
with
metallic
cobalt,
which
is
used
effectively
prevent
monometallic
atoms
ensure
homogeneous
dispersion
resulting
metalized
COFs.
In
reduction,
Co/TpPa-1
composite
exhibits
significantly
enhanced
compared
TpPa-1
The
CO
yield
0.05
mM
approximately
414.5
μmol
g-1
h-1,
representing
a
two-order-of-magnitude
improvement
over
COF
catalyst
(approximately
4.15
h-1).
Moreover,
shows
99.45%
selectivity
and
good
stability,
maintaining
97%
reduction
rate
after
four
cycles.
reason
lies
fact
that
interaction
between
monatomic
Co
COFs
enhances
visible
light
absorption
extends
lifetime
photogenerated
carriers
promoting
electron
transfer
through
loaded
Co.
This
work
provides
new
idea
synthesis
high
selectivity.
