Environmental Sciences Europe,
Journal Year:
2023,
Volume and Issue:
35(1)
Published: Feb. 8, 2023
Abstract
The
objective
is
to
achieve
the
goal
of
carbon
neutrality,
controlling
CO
2
emissions
a
primary
problem
be
solved
in
current
environmental
protection
field.
Eliminating
pollution
dyes
industrial
wastewater
also
an
urgent
field
protection.
adsorption
technique
effective
way
deal
with
these
two
issues.
Developing
high-efficiency
adsorbents
essential
work
In
this
work,
simple
carbonization
method
has
been
developed
prepare
porous
carbon.
morphology
and
structure
prepared
were
investigated
by
scanning
electron
microscopy,
X-ray
photoelectron
spectroscopy,
diffraction,
surface
area
measurement.
By
studying
influence
preparation
conditions
on
properties
materials,
it
was
found
that
materials
at
900
℃
(PCMCA-900)
exhibited
high
specific
1476
m
g
−1
total
pore
volume
0.951
cm
3
.
PCMCA-900
showed
highest
uptake
7.67
mmol
0
ºC
capacity
decreased
less
than
5%
after
10
times
recycling.
Moreover,
when
used
as
adsorbent
remove
Congo
red
water,
652.3
mg
achieved.
Therefore,
potassium
citrate-derived
desirable
candidate
for
excellent
wastewater.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(4), P. 1772 - 1772
Published: Feb. 13, 2023
The
design
and
synthesis
of
porous
carbons
for
CO2
adsorption
have
attracted
tremendous
interest
owing
to
the
ever-soaring
concerns
regarding
climate
change
global
warming.
Herein,
first
time,
nitrogen-rich
carbon
was
prepared
with
chemical
activation
(KOH)
commercial
melamine
formaldehyde
resin
(MF)
in
a
single
step.
It
has
been
shown
that
porosity
parameters
as-prepared
were
successfully
tuned
by
controlling
activating
temperature
adjusting
amount
KOH.
Thus,
N-rich
shows
large
surface
area
1658
m2/g
high
N
content
16.07
wt%.
Benefiting
from
unique
physical
textural
features,
optimal
sample
depicted
uptake
up
4.95
3.30
mmol/g
at
0
25
°C
under
1
bar
pressure.
More
importantly,
adsorbents
show
great
selectivity
over
N2
outstanding
recyclability,
which
prominently
important
capture
flue
gases
practical
application.
An
in-depth
analysis
illustrated
synergetic
effect
properties
nitrogen
decoration
mainly
determined
performance.
However,
play
more
role
than
functionalities
deciding
uptake.
In
view
cost-effective
synthesis,
activity,
capacity
together
good
selectivity,
this
advanced
approach
becomes
valid
convenient
fabricating
highly
efficient
adsorbent
separation
gases.
International Journal of Energy Research,
Journal Year:
2022,
Volume and Issue:
46(11), P. 15602 - 15616
Published: June 20, 2022
Herein,
the
banana-peel
waste
was
carbonized
followed
by
KOH
activation
to
design
novel
N,
S-co-doped
hierarchically
porous
carbonaceous
materials
(NS-AC).
The
synthesized
sample
(NS-AC)
exhibited
an
interconnected
porosity
and
endowed
with
a
high
specific
surface
area
(SSA
~
2452
m2
g−1),
total
pore
volume
(Vtotal
1.82
cm3
moderate
nitrogen
(3.2
at%)
sulfur
(0.6
contents.
Moreover,
these
carbons,
when
scrutinized
as
electrode
materials,
demonstrated
capacitance
(220
F
g−1
at
0.5
A
which
persists
145
even
large
current
density
of
6
g−1,
thereby
demonstrating
efficient
rate
capability.
Furthermore,
retention
~78.2%
over
15
000
cycles
also
observed.
All
characteristics
reveal
NS-AC
carbons
promising
contender
for
energy
storage.
Finally,
as-prepared
symmetric
supercapacitor
(NS-AC/NS-AC)
remarkable
~5.3
Wh
kg−1
power
2690
W
88%
4000
charge/discharge
cycles,
surpasses
working
performance
many
reported
carbon
obtained
from
biomass
sources.
In
conclusion,
outstanding
textural
features
enhanced
conductivity
activation,
in
addition
improved
wettability
posed
N-
S-enriched
surfaces,
resulted
considerable
performance.
Highlights
Banana
peels-derived
biochar-based
Porous
exhibit
(>2452
g−1).
Binary
heteroatom-doped
possess
at%
N
(3.2)
S
(0.6).
Synergetic
effect
doping
leads
supercapacitance.
Advanced Sustainable Systems,
Journal Year:
2022,
Volume and Issue:
6(11)
Published: Sept. 15, 2022
Abstract
The
hydrogen
economy
is
an
envisaged
system
proposed
for
a
sustainable
energy
future
that
comprises
production,
storage,
transportation,
and
stationary/mobile
applications.
Recently,
research
efforts
are
devoted
to
build
H
2
economy;
however,
the
reduced
volumetric
density
hinders
effective
storage.
To
combat
this,
material‐based
storage
emerging
trend
has
potential
meet
ongoing
goals
of
United
States
Department
Energy.
Herein,
critical
review
presented
on
state‐of‐the‐art
where
nanostructured
engineering
nanotechnology
have
driven
rapid
growth
in
material
design
from
physical
sorbents
(carbons,
metal‐organic
frameworks,
organic
polymer
frameworks)
chemical
(complex
metal
nanohydrides).
trends
sorption
include
tailoring
textural
features
porous
materials
enhancing
binding
strength
by
inducing
spill‐over
effect
functionalization
surfaces.
For
strategies
ameliorate
kinetics
thermodynamics
using
reactive
hydrides,
lightweight
composites,
nanoconfinement
hydrides.
Considering
long‐term
concept
para
also
highlighted.
Finally,
challenges
their
plausible
solutions
discussed
attain
economy,
near
future.
