Advanced Functional Materials,
Год журнала:
2024,
Номер
34(46)
Опубликована: Июль 15, 2024
Abstract
Achieving
a
high
dispersity
of
deposited
transition
metal
is
crucial
in
the
anodization
preparation
noble‐metal‐free
composites
for
photocatalytic
hydrogen
generation.
Herein,
first
time,
an
situ
ion
pumping
method
proposed
to
confine
single‐atom
Fe
within
spatially
ordered
structure
anodized
TiO
2
nanotubes
(TNT),
assisted
by
ferric
sodium
salt
ethylenediaminetetraacetic
acid
(EDTA)
as
“ion
pump”
deliver
3+
toward
anodes.
Both
experimental
and
theoretical
calculations
confirm
that
highly
dispersed
can
interact
with
single‐electron‐trapped
oxygen
vacancies
(SETOV),
effectively
reducing
vacancy
concentration
nanotubes.
This
reduction
promotes
efficient
charge
carrier
separation
through
Fe(III)/Fe(II)
pathway
enhances
desorption,
ultimately
boosting
evolution
performance.
Chemical Engineering Journal,
Год журнала:
2023,
Номер
476, С. 146818 - 146818
Опубликована: Окт. 20, 2023
It
is
an
efficient
strategy
to
construct
photocatalysts
by
integrating
the
advantages
of
inorganic
semiconductors
and
covalent
organic
frameworks
(COFs)
for
H2
generation
along
with
simultaneous
oxidation.
Herein,
inorganic/organic
CdS/COF
(denoted
as
TpBD)
2D
heterostructure
fabricated
electrostatic
self-assembly
method.
The
ultrathin
structure
can
reduce
charge
transfer
distance,
enhance
light
absorption,
multiply
reaction
sites
while
S-scheme
heterojunction
improves
separation
efficiency.
composite
acquires
outstanding
photocatalytic
activity
15.1
mmol/g/h,
simultaneously
convert
cheap
ascorbic
acid
value-added
2,3-diketo-L-gulonic
acid.
Hall
effect
test
elucidates
dynamics
carrier
migration.
electron
paramagnetic
resonance
analysis,
photo-irradiated
Kelvin
probe
force
microscopy,
femtosecond
transient
absorption
spectroscopy,
theoretical
calculation,
in-situ
irradiation
X-ray
photoelectron
spectroscopy
measurements
confirm
superiority
transfer.
This
research
presents
new
inspiration
develop
hydrogen
production
green
chemical
production.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(7), С. 2538 - 2549
Опубликована: Фев. 7, 2024
Biomass
photorefinery
over
a
sustainable
biochar
(BC)-based
heterojunction
provides
promising
approach
to
alleviate
the
worsening
environment
and
energy
crisis
via
hydrogen
(H2)
valuable
chemicals
production.
Moreover,
no
related
results
have
been
reported.
Here,
novel
BC-supported
CdS/TiO2
photocatalyst
(CdS/TiO2/BC)
was
rationally
fabricated
by
simple
hydrothermal
calcination
methods
for
glucose
photoreforming.
The
selectivity
of
value-added
modulated
alteration
base
type.
BC,
with
large
specific
surface
area
outstanding
electrical
conductivity,
employed
as
carrier
heterojunction,
which
further
facilitated
light
absorption
charge
separation.
as-synthesized
CdS/TiO2/BC
exhibited
excellent
acetic
acid
(63.94%)
together
improved
H2
generation
(∼12.77
mmol
g–1
h–1)
in
25
mM
NaOH
solution,
while
efficient
formic
(60.29%)
(∼10.29
were
observed
3
Na2CO3
solution.
Trapping
tests
indicated
that
·O2–
·OH
promoted
production
acid.
This
study
initiates
insight
into
design
environmentally
friendly
photocatalysts
fuel
from
biomass
photorefinery.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
Abstract
The
oxidative
degradation
of
plastics
in
conjunction
with
the
production
clean
hydrogen
(H
2
)
represents
a
significant
challenge.
Herein,
Ni
3
S
4
/ZnCdS
heterojunction
is
rationally
synthesized
and
employed
for
efficient
H
high‐selectivity
value‐added
chemicals
from
waste
plastic.
By
integrating
spectroscopic
analysis
techniques
density
functional
theory
(DFT)
calculations,
solely
electron
transfer‐mediated
reaction
mechanism
confirmed,
wherein
extracts
electrons
ZnCdS
(ZCS)
to
promote
spatial
segregation
photogenerated
holes,
which
not
only
facilitates
but
also
maintains
high
oxidation
potential
holes
on
ZCS
surface,
favoring
hole‐dominated
plastic
oxidation.
Notably,
catalyst
exhibited
rates
as
27.9
17.4
mmol
g
−1
h
,
along
selectivity
94.2%
78.3%
liquid
product
toward
pyruvate
acetate
polylactic
acid
(PLA)
polyethylene
terephthalate
(PET),
respectively.
Additionally,
carbon
yields
26.5%
2.2%
are
measured
after
9
photoreforming,
representing
highest
values
reported
date.
Overall,
this
research
presents
promising
approach
converting
into
fuel
valuable
chemical
products,
offering
solution
growing
issue
“
White
Pollution
”.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(29), С. 18498 - 18511
Опубликована: Янв. 1, 2024
This
study
highlights
the
single-step
growth
of
Bi/Bi
2
WO
6
/Bi
S
3
on
CdS
nanorods
and
their
built-in
electric
field
modulated
charge
separation
toward
a
UV-vis-NIR
driven
photocatalytic
H
evolution
reaction.
