The
reactivity
and
stability
of
zero-valent
iron
(ZVI)
sulfidated
(S-ZVI)
are
inherently
contradictory.
Iron
sulfides
(FeSX)
on
the
S-ZVI
surface
play
multiple
roles,
including
electrostatic
adsorption
catalyzing
reduction.
We
proposed
to
balance
air
by
modulating
FeSX.
Benefiting
from
superior
coordination
accelerate
electron
transport
capabilities
phosphate,
eco-friendly
ammonium
dihydrogen
phosphate
(ADP)
was
employed
synthesis
N,
P,
S-incorporated
ZVI
(NPS-ZVI)
regulate
FeSX
in
this
study.
Raman,
FTIR,
XPS,
DFT
calculations
were
combined
reveal
that
HPO42-
acts
as
main
P
species
Fe
surface.
NPS-ZVI
quantified
different
parameters
(kobs,
kSA,
kM),
which
210.77,
27.44,
211.17-fold
than
ZVI,
respectively.
demonstrated
excellent
pH
tolerance
reusability,
there
no
risk
secondary
pollution.
Critically,
could
effectively
maintain
under
combination
diffusion
limitation
protection
mechanisms
ADP.
attributed
fact
ADP
maintains
accelerates
transport.
This
study
provides
a
novel
strategy
balancing
offers
theoretical
support
for
material
modification.
