Abstract
The
synthesis
of
2,5‐diformylfuran
(DFF)
through
photocatalytic
oxidation
5‐hydroxymethylfurfural
(HMF)
is
an
attractive
approach.
In
this
manuscript,
a
selective
strategy
for
HMF
was
developed,
using
Ag/Ag
3
PO
4
as
the
photocatalyst
and
O
2
oxidizing
agent.
prepared
catalyst
characterized
systematically
by
SEM,
XRD,
XPS,
UV‐Vis,
PL
spectra,
so
on.
contrast
to
previous
strategies
conversion,
catalytic
system
could
efficiently
generate
1
without
other
reactive
oxygen
species
(ROS)
under
visible
light
irradiation.
DFF
would
be
obtained
with
about
90
%
selectivity.
Moreover,
exclusive
formation
linked
more
positive
conduction
band
potential
(+0.90
eV)
,
confirmed
array
characterization
techniques.
Additionally,
stability
assessed
cyclic
testing
analyses
including
XPS.
Nonetheless,
potentially
serve
robust
platform
various
reactions
in
future,
due
its
presence
involvement
ROS.
Environmental Functional Materials,
Год журнала:
2024,
Номер
3(1), С. 1 - 12
Опубликована: Март 1, 2024
Titanium
dioxide
(TiO2),
recognized
for
its
affordability,
low
cost,
high
chemical
stability,
and
eco-friendliness,
has
garnered
extensive
research
attention
in
recent
years.
But
because
of
the
TiO2
band
gap
(>3.2eV)
seriously
limit
use
visible
light,
fast
electron-hole
composite
often
lead
to
poor
photocatalytic
activity
quantum
yield.
Therefore,
needs
be
modified.
Modification
can
change
broadband
TiO2,
enhance
light
absorption,
thus
affect
important
means
efficiency.
In
this
review,
we
introduce
crystal
form
mechanism
review
some
modification
strategies
including
doping
modification,
construction
heterojunctions,
plane
engineering
defect
engineering.
Furthermore,
application
modified
TiO2-based
materials
water
treatment,
removal
dye
contaminants,
antibiotics,
advanced
oxidative
sterilization,
finally
explore
challenges
prospects
photocatalysts.
Chemical Communications,
Год журнала:
2024,
Номер
60(73), С. 9918 - 9929
Опубликована: Янв. 1, 2024
This
article
summarizes
small-sized
transition
metal
oxide
(TMO)
clusters
for
electrocatalysis.
The
synergistic
actions
between
TMO
and
TM–N
x
sites
mechanisms
by
DFT
studies
are
comprehensively
highlighted.
Abstract
Olefin‐linked
covalent
organic
frameworks
(OL‐COFs)
show
great
promise
for
visible‐light‐driven
photocatalysis.
Manipulating
atomic‐level
donor–acceptor
interactions
in
OL‐COFs
is
key
to
understanding
their
exciton
effects
this
system.
Here,
three
are
presented
with
orthorhombic
lattice
structures,
synthesized
via
Knoevenagel
polycondensation
reaction
of
terephthalaldehyde
and
tetratopic
monomers
featuring
phenyl,
benzo[c][1,2,5]oxadiazole,
benzo[c][1,2,5]thiadiazole
moieties.
These
feature
tunable
interactions,
making
them
ideal
studying
olefin‐linked
systems.
Comprehensive
analyses,
including
temperature‐dependent
photoluminescence
spectra,
ultrafast
spectroscopy,
theoretical
calculations,
reveal
that
stronger
lead
reduced
binding
energy
(
E
b
),
accelerated
dissociation,
longer‐lived
photogenerated
charges,
thereby
enhancing
photocatalytic
performance.
Notably,
The
TMO‐BDA
COF,
the
lowest
,
demonstrates
superior
activity
one‐pot
sequential
transformation
excellent
catalytic
performance
gram‐scale
reactions,
highlighting
its
potential
practical
applications.
This
work
provides
valuable
insights
into
regulating
effect
at
molecular
level
OL‐COFs,
offering
pathways
enhance
efficiency.
