The
presence
of
efficient
catalytic
active
sites
and
an
ample
supply
electrons
are
the
two
indispensable
factors
for
achieving
photocatalytic
nitrogen
fixation.
Herein,
Fe-doped
TiO2
S-scheme
anatase/rutile
homojunction
(F-T-A/R)
was
synthesized
as
a
brilliant
photocatalyst
fixation
from
N2
to
NH3
under
ambient
atmosphere.
optimized
F-T-A/R
(A/R
=
98:2,
Fe-2wt%)
exhibits
unprecedented
generation
rate
358
μmol
gcat-1
h-1
in
water
solvent
simulated
solar
light
irradiation.
Experimental
theoretical
studies
reveal
that
constructed
F-A/R-TiO2
is
conducive
fluent
charge
separation
adequate
on
rutile
with
higher
fixing
activity,
while
tuned
local
electronic
structure
oxygen
vacancy
Fe
doping
engineered
strengthen
sites,
synergistically
enhancing
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 28, 2025
Flexible
gas
sensors
are
gaining
increasing
recognition
for
their
potential
applications
in
the
realm
of
electronic
skin
and
smart
textiles.
However,
owing
to
insufficient
adhesion
property
between
organic
flexible
substrate,
metal
electrodes,
sensing
film,
traditional
often
suffer
from
terrible
durability
under
intense
bending
or
folding
conditions.
In
this
study,
a
fabric
ammonia
(NH3)
sensor
composed
an
electrospun
preoxidized
polyacrylonitrile
(PAN)
fiber-based
substrate
situ
self-assembled
polyaniline
(PANI)
film/electrode
was
rationally
designed.
Owing
favorable
capability
on
polymer
excellent
conductivity,
outstanding
sensitivity
NH3,
PANI
film
endowed
with
exceptional
flexibility.
Meanwhile,
low
elastic
modulus
guarantees
its
comfortable
wearability.
Apart
superior
performances
toward
2-50
ppm
fabricated
revealed
little
response
fluctuation
(4%)
10
NH3
angles
0°
180°
maintained
negligible
changes
(3.2%)
1000
cycles
treatment
angle
120°.
The
designed
is
further
developed
into
wearable
devices
validating
versatility
reliability
multiscenario
home
applications.
design
strategy
presented
here
not
only
addresses
challenges
associated
but
also
paves
way
exploration
next-generation
tailored
across
various
The
presence
of
efficient
catalytic
active
sites
and
an
ample
supply
electrons
are
the
two
indispensable
factors
for
achieving
photocatalytic
nitrogen
fixation.
Herein,
Fe-doped
TiO2
S-scheme
anatase/rutile
homojunction
(F-T-A/R)
was
synthesized
as
a
brilliant
photocatalyst
fixation
from
N2
to
NH3
under
ambient
atmosphere.
optimized
F-T-A/R
(A/R
=
98:2,
Fe-2wt%)
exhibits
unprecedented
generation
rate
358
μmol
gcat-1
h-1
in
water
solvent
simulated
solar
light
irradiation.
Experimental
theoretical
studies
reveal
that
constructed
F-A/R-TiO2
is
conducive
fluent
charge
separation
adequate
on
rutile
with
higher
fixing
activity,
while
tuned
local
electronic
structure
oxygen
vacancy
Fe
doping
engineered
strengthen
sites,
synergistically
enhancing
