Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(14)
Опубликована: Фев. 10, 2024
Abstract
The
synthesis
of
hydrogen
peroxide
through
artificial
photosynthesis
is
a
green
and
promising
technology
with
advantages
in
sustainability,
economy
safety.
However,
superoxide
radical
(⋅O
2
−
),
an
important
intermediate
photocatalytic
oxygen
reduction
to
H
O
production,
has
strong
oxidizing
properties
that
potentially
destabilize
the
catalyst.
Therefore,
avoiding
accumulation
⋅O
for
its
rapid
conversion
paramount
significance
improving
catalyst
stability
yield.
In
this
work,
strategy
was
developed
utilize
protonated
groups
depletion
converted
,
thereby
efficiency
from
CN
successfully
enhanced
by
47‐fold.
experimental
findings
demonstrated
polydopamine
not
only
improved
carrier
separation
efficiency,
more
importantly,
provided
adsorption
active
site
efficient
production.
This
work
offers
versatile
approach
synthesizing
stable
photocatalysts.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(4), С. 1921 - 1933
Опубликована: Янв. 17, 2024
Aeration
accounts
for
35–51%
of
the
overall
energy
consumption
in
wastewater
treatment
processes
and
results
an
annual
5–7.5
billion
kWh.
Herein,
a
solar-powered
continuous-flow
device
was
designed
aeration-free
situ
Fenton-like
reactions
to
treat
wastewater.
This
system
is
based
on
combination
TiO2–x/W18O49
featuring
heterophase
oxygen
vacancy
interactions
with
floating
reduced
graphene/polyurethane
foam,
which
produces
hydrogen
peroxide
at
rates
up
4.2
ppm
h–1
degradation
more
than
90%
various
antibiotics.
The
vacancies
play
important
role
stretching
O–O
bond
by
regulating
d-band
center
TiO2–x/W18O49,
promoting
hydrogenation
*·O2–
or
*OOH
H+
enrichment,
accelerating
production
reactive
species
spontaneous
adsorption
peroxide.
Furthermore,
mechanisms
antibiotics
actual
were
thoroughly
investigated.
In
short,
study
provides
meaningful
reference
potentially
undertaking
"aeration-free"
Fenton
reaction,
can
help
reduce
even
completely
eradicate
aeration
costs
requirements
during
