Molecules,
Journal Year:
2023,
Volume and Issue:
28(16), P. 6137 - 6137
Published: Aug. 19, 2023
To
address
the
challenges
associated
with
weak
affinity
and
difficult
separation
of
biochar,
we
developed
chitosan-biochar
hydrogel
beads
(CBHBs)
as
an
efficient
solution
for
removing
reactive
brilliant
blue
(RBB
KN-R)
from
wastewater.
The
adsorption
behavior
mechanism
RBB
KN-R
onto
CBHBs
were
extensively
studied.
Notably,
capacity
showed
pH-dependence,
highest
was
observed
at
pH
2.
process
well
fitted
pseudo-second-order
kinetic
model
intraparticle
diffusion
model.
Film
both
responsible
CBHBs.
At
298.15
K,
maximum
qm
determined
to
be
140.74
mg/g,
higher
temperatures
favoring
process.
A
complex
involving
π-π
interactions,
electrostatic
attraction,
hydrophobic
interaction,
hydrogen
bonding
found
contribute
overall
experimental
data
discovered
coexisting
substances
elevated
ionic
strength
hindered
capacity.
Significantly,
after
three
cycles
adsorption-desorption,
maintained
above
95%
KN-R.
These
promising
results
imply
that
are
a
durable
cost-effective
adsorbent
removal
dyes
Coatings,
Journal Year:
2024,
Volume and Issue:
14(1), P. 67 - 67
Published: Jan. 3, 2024
In
this
study,
we
comprehensively
explored
the
electronic
structure
and
optical
properties
of
Ni-doped
Bi4O5Br2
through
first-principles
computational
calculations.
By
calculating
its
band
characteristics,
investigated
impact
Ni
doping
on
photocatalytic
performance
Bi4O5Br2.
The
results
indicated
that
significantly
altered
Bi4O5Br2,
leading
to
a
reduction
in
gap
width.
for
undoped
was
2.151
eV,
whereas
system
exhibited
smaller
gap,
directly
indicating
enhanced
visible
light
absorption
capacity
facilitating
effective
separation
photo-generated
electron–hole
pairs.
Through
analysis
2D
charge
density
maps,
observed
changes
chemical
bonding
induced
by
doping.
shortening
Ni-O
bonds
suggested
increased
bond
strength,
consistent
with
cell
volume.
These
findings
provide
theoretical
foundation
understanding
mechanisms
behind
hydrogen
production
offering
valuable
insights
design
optimization
highly
efficient
materials.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(16), P. 6137 - 6137
Published: Aug. 19, 2023
To
address
the
challenges
associated
with
weak
affinity
and
difficult
separation
of
biochar,
we
developed
chitosan-biochar
hydrogel
beads
(CBHBs)
as
an
efficient
solution
for
removing
reactive
brilliant
blue
(RBB
KN-R)
from
wastewater.
The
adsorption
behavior
mechanism
RBB
KN-R
onto
CBHBs
were
extensively
studied.
Notably,
capacity
showed
pH-dependence,
highest
was
observed
at
pH
2.
process
well
fitted
pseudo-second-order
kinetic
model
intraparticle
diffusion
model.
Film
both
responsible
CBHBs.
At
298.15
K,
maximum
qm
determined
to
be
140.74
mg/g,
higher
temperatures
favoring
process.
A
complex
involving
π-π
interactions,
electrostatic
attraction,
hydrophobic
interaction,
hydrogen
bonding
found
contribute
overall
experimental
data
discovered
coexisting
substances
elevated
ionic
strength
hindered
capacity.
Significantly,
after
three
cycles
adsorption-desorption,
maintained
above
95%
KN-R.
These
promising
results
imply
that
are
a
durable
cost-effective
adsorbent
removal
dyes
