ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(30), С. 40180 - 40189
Опубликована: Июль 17, 2024
Two
π-conjugated
covalent
organic
frameworks
(COFs)
with
nonring
imine
or
benzoxazole
ring
linkages
were
prepared
by
reacting
3,3′-dihydrooxybenzidine
(BDOH)
3,5-triformylbenzene
(Tb)
in
the
presence
absence
of
benzimidazole
(BDOH-Tb-IM
and
BDOH-Tb-BO).
Although
two
COFs
indicated
similar
composition,
crystalline
structures,
morphologies,
imine-based
BDOH-Tb-IM
exhibited
a
photocatalytic
H2O2
production
rate
2490
μmol·g–1·h–1
sacrificial
reagent-free
pure
water,
higher
than
that
benzoxazole-based
BDOH-Tb-BO-a
(1168
μmol·g–1·h–1).
The
activity
was
attributed
to
its
more
efficient
photoinduced
charge
separation
utilization
efficiency
different
2e–
ORR
active
sites
over
COFs.
This
study
demonstrated
an
available
effect
adjust
performance
between
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(44)
Опубликована: Май 21, 2024
Abstract
Amorphous
materials
with
a
high
number
of
unsaturated
coordinated
dangling
bonds
exhibits
macroscopic
homogeneity
and
isotropy,
making
it
easily
modifiable
to
improve
the
catalytic
properties.
At
present,
several
feasible
modification
strategies
for
amorphous
have
been
proposed
applied
multiple
fields.
This
review
aims
provide
comprehensive
overview
recent
research
advancements
in
catalysis.
First,
general
modifying
are
summarized.
Subsequently,
potential
applications
modified
electrocatalysis
photocatalysis
highlighted.
Additionally,
positive
effects
various
tools
on
properties
elucidated.
Finally,
summary
challenges
offer
critical
perspective
further
development
presented.
The
primary
goal
this
is
systematic
understanding
how
enhance
performance
stimulate
catalysts
future.
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
Underwater
imaging
technology
plays
a
pivotal
role
in
marine
exploration
and
reconnaissance,
necessitating
photodetectors
(PDs)
with
high
responsivity,
fast
response
speed,
low
preparation
costs.
This
study
presents
the
synergistic
optimization
of
responsivity
speed
self‐powered
photoelectrochemical
(PEC)‐type
photodetector
arrays
based
on
oxygen‐vacancy‐tuned
amorphous
gallium
oxide
(a‐Ga
2
O
3
)
thin
films,
specifically
designed
for
solar‐blind
underwater
detection.
Utilizing
low‐cost
one‐step
sputtering
process
controlled
oxygen
flow,
a‐Ga
films
varying
vacancy
(V
concentrations
are
fabricated.
By
balancing
trade‐offs
among
electrocatalytic
reactions,
charge
transfer,
carrier
recombination,
trapping,
both
‐based
PEC‐PDs
simultaneously
improved.
Consequently,
optimized
demonstrated
exceptional
performance,
achieving
33.75
mA
W
−1
times
12.8
ms
(rise)
31.3
(decay),
outperforming
vast
majority
similar
devices.
Furthermore,
pronounced
positive
correlation
between
anomalous
transient
photocurrent
spikes
concentration
V
defects
is
observed,
offering
compelling
evidence
‐mediated
indirect
recombination.
Finally,
proof‐of‐concept
system,
utilizing
an
array
PEC‐PDs,
clear
capabilities
seawater.
work
provides
valuable
insight
into
potential
developing
cost‐effective,
high‐performance
thin‐film‐based
advanced
technology.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(20), С. 7459 - 7511
Опубликована: Янв. 1, 2024
This
review
provides
a
comprehensive
overview
on
the
mechanism
of
photoelectrochemical
biomass
conversion
and
highlights
extension
dual-function
cells
for
valorization
paired
with
more
valuable
half-reactions.
Abstract
Ammonia
borane
(AB)
has
emerged
as
a
promising
chemical
hydrogen
storage
material.
The
development
of
efficient,
stable,
and
cost‐effective
catalysts
for
AB
hydrolysis
is
the
key
to
achieving
energy
economy.
Here,
cobalt
phosphide
(CoP)
used
anchor
single‐atom
Pt
species,
acting
robust
generation
from
hydrolysis.
Thanks
high
utilization
synergy
between
CoP
optimized
Pt/CoP‐100
catalyst
exhibits
an
unprecedented
rate,
giving
record
turnover
frequency
(TOF)
value
39911
number
2926829
at
room
temperature.
These
metrics
surpass
those
all
existing
state‐of‐the‐art
supported
metal
by
order
magnitude.
Density
functional
theory
calculations
reveal
that
integration
onto
substrate
significantly
enhances
adsorption
dissociation
processes
both
water
molecules,
thereby
facilitating
production
Interestingly,
TOF
further
elevated
54878
under
UV–vis
light
irradiation,
which
can
be
attributed
efficient
separation
mobility
photogenerated
carriers
Pt‐CoP
interface.
findings
underscore
effectiveness
support
metals
in
production,
offering
insights
designing
high‐performance
storage.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
The
excessive
use
of
fossil
fuels
has
significantly
increased
environmental
stress,
driving
the
need
for
green,
sustainable
biofuel
alternatives.
Innovations
in
photocatalysis
(PC),
electrocatalysis
(EC),
and
their
synergistic
approaches,
like
photothermal
catalysis
(PTC),
photo‐enzymatic
(PENC),
photoelectrocatalysis
(PEC),
offer
advanced
methods
biomass
conversion
into
biofuels,
surpassing
traditional
limitations.
However,
comprehensive
research
on
these
processes
is
still
lacking.
This
review
aims
to
systematically
analyze
recent
progress
catalytic
strategies
biomass‐to‐biofuel
conversion.
It
first
describes
characteristics,
types,
properties
biofuels.
Then,
it
explores
fundamental
mechanisms
PC,
EC,
combined
technologies.
chemical
pathways
involved
conversion—such
as
transesterification,
esterification,
hydrogenation,
decarboxylation,
bond
cleavage,
cyclization—are
examined.
Efficient
catalyst
design
specific
reactions
factors
influencing
efficiency
rates
are
also
discussed.
Additionally,
this
paper
assesses
impact
economic
benefits
green
technology
production,
offering
a
valuable
reference
energy
application.
addresses
challenges
deployment
production
suggests
future
directions,
aiming
provide
scientific
guidance
technical
support
development
vital
field.
In
summary,
underscores
importance
continued
innovation
promote
solutions.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 31, 2024
Abstract
The
concept
of
photoelectrochemical
conversion
biomass
into
industrially
valuable
chemicals
presents
a
compelling
strategy
to
supplant
the
lower‐value
oxygen
evolution
typically
associated
with
photoanodes.
Here,
surface
potential
manipulation
method
by
regulating
valence
states
is
put
forward,
which
demonstrated
be
effective
in
enhancing
selective
oxidation
glycerol
dihydroxyacetone
(DHA).
This
involves
concurrent
establishment
BiVO
4
/CoO
x
heterojunction
and
/Au
Schottky
junction,
aiming
fine‐tune
photoanode's
improve
both
its
charge
carrier
separation
interfacial
transfer
kinetics.
photoanode
exhibits
photocurrent
density
6.15
mA
cm
−2
at
1.23
V
versus
reversible
hydrogen
electrode
(RHE).
Meanwhile,
efficiency
achieves
DHA
rate
339.74
mmol
m
h
−1
selectivity
exceeding
60%.
Experiments
theoretical
analysis
underscore
pivotal
role
played
mediating
adsorption
desorption
processes.
Additionally,
diminished
attributed
CoO
Au
amendments
responsible
for
decreased
Gibbs
free
energy
dehydrogenation's
rate‐limiting
step
involving
intermediate
carbon
species.
work
demonstrates
design
catalysts
modulating
molecular
adsorption/desorption
regulation.
Abstract
This
review
comprehensively
explores
the
integration
of
photocatalytic
(PC)
and
photoelectrocatalytic
(PEC)
technologies
for
hydrogen
production
via
water
splitting,
in
synergy
with
efficient
conversion
biomass
resources.
synergistic
strategy
significantly
boosts
rates
both
PC
PEC
systems
enhances
solar
energy
efficiency.
Furthermore,
it
enables
selective
cost‐effective
precise
modulation
catalyst
structures,
paving
a
novel
pathway
green
generation
synthesis
high‐value
chemicals.
Specifically,
manuscript
highlights
recent
progress
oxidation
coupling
reactions
derivatives,
such
as
methanol,
ethanol,
glycerol,
5‐hydroxymethylfurfural,
PC/PEC
systems.
It
reveals
their
potential
to
enhance
efficiency
organic
compounds.
Future
research
should
focus
on
employing
in‐situ
characterization
techniques
theoretical
simulations
deeply
understand
reaction
mechanisms,
thus
advancing
field
through
photocatalytic/photoelectrocatalytic
methods.
