Improving
the
recycling
stability
of
photocatalysts
is
great
significance
in
practical
applications.
Herein,
in-situ
prepared
TiO2/Ti3C2Tx
(TOTC)
heterojunction
embedded
gel
microsphere
(GMS)
as
a
recyclable
photocatalyst
TOTC@GMS
for
efficient
photocatalytic
degradation
Congo
red
(CR).
The
experimental
results
show
that
removal
rate
can
reach
up
to
99
%
120
min
without
any
co-catalysts
(precious
metals)
or
sacrificial
reagents.
GMS
be
recycled
after
rinsing
deionized
water
only
2
min,
and
still
maintain
over
90
even
25
cycles.
Besides,
we
also
achieve
90%
CR
real
samples
exposed
natural
sunlight
180
min.
mechanism
reveals
hydroxyl
radicals
(•OH)
superoxide
(•O2-)
are
main
reactive
species
triggered
decolorization
via
means
free
radical
scavenging
electron
paramagnetic
resonance
(EPR)
experiments.
products
further
proposed
by
high-performance
liquid
chromatography-mass
spectrometry
(LC-MS),
pathways
deduced.
Additionally,
phytotoxicity
test
carried
out
confirm
non-toxicity
organic
micromolecules
generated
degradation.
This
work
presents
strategy
improve
photocatalysts,
which
effectively
reduce
cost
wastewater
treatment.
