IntechOpen eBooks,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 23, 2024
Nanocomposites
are
multiphase
materials
that
attracted
considerable
attention
as
very
efficient
photocatalytic
materials.
The
nanocomposite
photocatalysts
contain
semiconductors
and
metals
reinforced
nanophase
activity
is
result
of
this
heterojunction
with
matrix.
aim
section
to
explore
some
the
most
representative
electro-photocatalytic
properties.
These
reactions
an
alternative
solution
use
sunlight
energy
in
degradation
contaminants
from
air
water,
synthesis
new
organic
compounds,
source.
reaction
between
photons
(powder,
fiber,
film)
associated
generation
reactive
oxygen
species
play
a
key
role
these
applications.
effects
heterojunctions
different
their
synergy
promote
properties
nanocomposites
evidenced.
mechanisms
various
types
thus
presented
highlighting
strategy
suppress
recombination
e−/h+
pairs.
variation
visible
light
absorption
increasing
its
efficiency,
selectivity,
stability
due
contribution
surface
plasmon
resonance
effect
produced
by
precious
nanoparticles
also
considered.
Nanoscale,
Год журнала:
2023,
Номер
15(46), С. 18571 - 18580
Опубликована: Янв. 1, 2023
Photocatalysis,
as
an
effective
advanced
oxidation
process,
has
been
widely
carried
out
in
water
waste
treatment,
especially
the
degradation
of
organic
pollutants.
However,
photocatalytic
process
is
limited
by
high
recombination
rate
photo-generated
carriers.
To
improve
efficiency,
piezocatalysis
attracted
increasing
attention,
that
using
lead-free
piezoelectric
materials,
which
avoids
secondary
pollution
lead
toxicity
environment.
Bi-based
materials
have
both
activity
and
piezocatalytic
activity,
can
perfectly
combine
advantages
these
two
catalytic
processes
to
promote
Under
external
mechanical
action,
catalyst
produces
a
polarized
electric
field
due
effect,
carriers
be
effectively
separated
under
electrostatic
attraction,
thus
obtaining
more
efficient
performance.
there
are
still
many
gaps
design,
reaction
mechanism,
development
prospects
piezo-photocatalysts.
Therefore,
acquire
deeper
understanding
research
status
piezo-photocatalysts,
we
summarize
existing
literature
provide
ways
piezo-photocatalytic
Moreover,
this
paper
points
developmental
direction
piezo-photocatalysis
future.
Last
but
not
least,
also
look
forward
prospect
Heliyon,
Год журнала:
2023,
Номер
10(1), С. e23139 - e23139
Опубликована: Дек. 9, 2023
This
work
presents
a
novel,
strong
and
efficient
adsorbent
(CS@TDI@EDTA@γ-AlO(OH))
prepared
through
the
green
process
using
three
components,
chitosan,
BNPs
EDTA
amide
ester
bridges.
An
eco-friendly
easy
approach
was
used
for
preparation
of
this
novel
adsorbent,
low
cost,
access
to
materials,
simplicity
method
are
some
interesting
advantages
work.
Also,
as
an
remove
diazinon
organophosphate
poison
tetracycline
antibiotic
from
aqueous
solutions.
In
order
confirm
structure,
CS@TDI@EDTA@γ-AlO(OH)
composite
investigated
by
various
analyses
including
FT-IR,
EDX,
XRD,
FESEM
TGA.
The
adsorption
behavior
removal
under
different
conditions
varying
concentration,
temperature,
dose,
pH
contact
time.
Based
on
tests,
highest
capacity
obtained
0.12
g/L
at
7
60
°C
with
40
mg/L
initial
concentration.
maximum
9
30
equilibrium
results
were
in
good
accordance
Langmuir
Freundlich
isotherm
models,
respectively.
capacities
1428.5
555.5
mg/g,
Also
kinetic
investigations
revealed
that
correlation
factor
(R2)
pseudo-second-order
model
0.9986
0.9988,
while
coefficient
k
(g/mg.min)
0.000084
0.0033,
These
indicate
is
kinetics
model.
Formation
hydrogen
bonds
between
adsorbate
well
high
specific
surface
area
porosity
main
mechanisms
contribute
process.
addition,
thermodynamic
studies
indicated
spontaneous
endothermic
expected
have
wide
range
applications
wastewater
treatment
thanks
its
reusability
water
compared
other
adsorbents.
