Abstract
Atomic
layer
etching
(ALE)
using
the
environmentally
friendly
electronic
gas
fluoromethane
(CH
3
F)
is
guided
for
fabricating
nanoscale
components.
The
adsorptive
purification
of
CH
F
provide
a
viable
direction
to
remove
trace
amounts
impurities
produce
highly
pure
(>99.9999%)
ALE
process.
Herein,
propane
(~100
ppm)
in
F,
we
report
synergetic
thermodynamic
and
kinetic
separation
C
H
8
/CH
over
glucose‐derived
carbon
molecular
sieve
CMS‐T,
(T
as
pyrolysis
temperature).
With
pore
size
slightly
larger
than
diameter
,
CMS‐600
allows
both
strong
confined
adsorption
higher
diffusion
rate
resulting
remarkable
factor
51.1.
Breakthrough
experiment
demonstrates
high
dynamic
production
capacity
457
L
kg
−1
7
N
(<100
ppb
)
with
excellent
cycling
stability.
Adsorption
provides
feasible
approach
industrial
hyperpurification
gas.
Chemical Reviews,
Год журнала:
2023,
Номер
123(11), С. 7193 - 7294
Опубликована: Май 9, 2023
Hydrothermal
process
is
an
emerging
technology
that
contributes
to
sustainable
production
of
biomass-derived
chemicals,
fuels,
and
materials.
This
uses
hot
compressed
water
convert
various
biomass
feedstocks
including
recalcitrant
organic
compounds
in
biowastes
into
desired
solid,
liquid,
gaseous
products.
In
recent
years,
considerable
progress
has
been
made
the
hydrothermal
conversion
lignocellulosic
as
well
nonlignocellulosic
value-added
products
bioenergy
fulfill
principles
circular
economy.
However,
it
important
assess
processes
terms
their
capabilities
limitations
from
different
sustainability
aspects
so
further
advances
can
be
toward
improvement
technical
maturity
commercialization
potential.
The
key
aims
this
comprehensive
review
are
(a)
explain
inherent
properties
physio-chemical
characteristics
bioproducts,
(b)
elucidate
related
transformation
pathways,
(c)
clarify
role
for
conversion,
(d)
evaluate
capability
treatment
coupled
with
other
technologies
producing
novel
fuels
materials,
(e)
explore
assessments
potential
large-scale
applications,
(f)
offer
our
perspectives
facilitate
transition
a
primarily
petro-based
alternative
biobased
society
context
changing
climate.
Green Energy & Environment,
Год журнала:
2023,
Номер
8(4), С. 1216 - 1227
Опубликована: Янв. 5, 2023
Hydrothermal
carbonization
(HTC)
of
lignocellulosic
biomass
is
a
promising
technology
for
the
production
carbon
materials
with
negative
emissions.
However,
high
reaction
temperature
and
energy
consumption
have
limited
development
HTC
technology.
In
conventional
batch
reactors,
pressure
are
typically
coupled
at
saturated
states.
this
study,
decoupled
hydrothermal
(DTPH)
system
was
developed
to
decrease
(rice
straw
poplar
leaves).
The
properties
hydrochars
were
analyzed
by
scanning
electron
microscopy
(SEM),
Fourier
transform
infrared
(FTIR)
spectroscopy,
X-ray
photoelectron
spectroscopy
(XPS),
Raman
diffraction
(XRD),
thermogravimetric
analyzer
(TGA),
etc.
propose
mechanism.
results
showed
that
could
be
realized
low
200
°C
in
DTPH
process,
breaking
limit
(230
°C)
process.
method
break
barrier
crystalline
structure
cellulose
content,
realizing
hemicellulose
dehydration,
unsaturated
bond
formation,
aromatization.
produced
hydrochar
had
an
appearance
microspheres,
calorific
values,
abundant
oxygen-containing
functional
groups,
certain
degree
graphitization,
good
thermal
stability.
Cellulose
acts
not
only
as
protect
itself
from
decomposition,
but
also
key
precursor
formation
microspheres.
This
study
shows
synthesizing
carbon-negative
effect.
Food Chemistry,
Год журнала:
2024,
Номер
442, С. 138421 - 138421
Опубликована: Янв. 13, 2024
A
systematic
kinetic
study
was
conducted
in
subcritical
water
medium
the
temperature
range
from
150
to
200
°C
for
pure
glucose,
xylose,
proline
and
aspartic
acid
as
well
binary
mixtures
of
sugars
+
amino
acids
understand
reaction
kinetics
interactions
among
biomass
components
discern
influence
Maillard
(MR)
on
overall
kinetics.
The
main
degradation
products
identified
glucose
xylose
were
respective
dehydration
products,
hydroxymethyl
furfural
furfural,
yielding
an
increasing
solid
residue
with
(15.9
wt%
at
°C)
augmented
heating
value.
systems
faster
compared
compounds
due
MR
production
delayed
when
considering
total
sugar
conversion.
Higher
relative
reactivity
observed
over
showing
also
higher
antioxidant
activity.
Heliyon,
Год журнала:
2023,
Номер
9(4), С. e14873 - e14873
Опубликована: Март 28, 2023
United
Nations
charter
to
build
a
sustainable
future
has
paved
the
way
for
introduction
of
Sustainability
Development
Goals
(SDGs)
at
global
forum.
In
particular,
SDG
11
is
aligned
with
idea
developing
cities
and
communities
that
provide
quality
human
life,
by
attaining
net-zero
discharge
self-sustainability.
line
efforts
community,
biochar
emerged
as
viable
solution
due
its
ability
convert
waste
into
value.
Finding
applications
in
spectrum
domains,
being
studied
use
an
adsorbent,
co-catalyst
promote
industrial-grade
reactions
feed
fuel
cells.
Moreover,
inclusion
soil
enhancement
material
advocates
implementation
closed-loop
nutrient
cycles.
Hence,
it
imperative
have
proper
understanding
biomass
characteristics,
hydrothermal
treatment
process
parameters
be
adopted
production
char
order
identify
feedstock
based
on
application.
The
current
work
provides
insight
key
factors
conditions
employed
plethora
applications.
basic
framework
aid
char,
development
statistical
correlation
was
undertaken
determine
optimum
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Март 4, 2024
Carbon
fibers
(CFs)
have
attracted
attention
in
the
automotive,
aviation,
and
aerospace
industries.
However,
coloration
of
CFs
is
challenging
due
to
their
brittleness,
inertness,
complexity,
time/energy-intensive
processes.
Herein,
inspired
by
naturally
grown
protrusive
nanostructures
on
green
central
surface
peacock
back
feathers,
we
report
an
in-situ
self-growing
strategy
for
developing
carbon
spheres
(CSs)
achieve
color
tuning.
This
achieved
via
dynamic
growth
CSs
using
glucose
as
feeding
material.
Combined
with
process,
interaction
between
promotes
stable
interfacial
forces
integrated
molding.
allows
coloring
system
continuously
vary
its
a
designated
manner,
thereby,
endowing
it
satisfactory
mechanical
robustness,
acid
durability,
light
fastness.
We
anticipate
this
developed
approach
can
be
potentially
competitive
construction
multi-colors
low-cost
manufacturing.
