Sulfur Vacancy‐Induced Enhancement of Piezocatalytic H2 Production in MoS2
Small,
Journal Year:
2025,
Volume and Issue:
21(11)
Published: Feb. 3, 2025
Abstract
This
study
explores
the
role
of
S
vacancies
in
MoS
2
enhancing
its
piezocatalytic
efficiency.
Sulfur
crystal
lattice
introduce
localized
changes
electronic
structure
and
charge
distribution,
improving
material's
piezoelectric
response.
Characterization
catalysts
involved
techniques
like
field‐emission
scanning
electron
microscopy
(FESEM),
X‐ray
diffraction
(XRD),
transmission
(TEM),
photoelectron
spectroscopy
(XPS).
Electrochemical
measurements,
including
impedance
(EIS)
Mott–Schottky
(M‐S)
analysis,
are
performed
to
assess
performance.
The
also
employed
density
functional
theory
(DFT)
calculations
investigate
hydrogen
adsorption
properties
with
vacancies.
results
demonstrated
that
S‐deficient
significantly
enhanced
H
evolution.
production
rates
different
vacancy
concentrations
measured
under
ultrasonic
vibration.
sample
an
optimal
concentration
(MS‐1)
exhibited
highest
rate
1423.29
µmol
g
−1
h
,
compared
439.06
for
pristine
(MS‐0).
improved
performance
is
attributed
increased
polarization
efficient
separation
facilitated
by
Language: Английский
Effect of Morphology Modification of BiFeO3 on Photocatalytic Efficacy of P-g-C3N4/BiFeO3 Composites
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(9), P. 4948 - 4948
Published: May 1, 2024
This
current
study
assessed
the
impacts
of
morphology
adjustment
perovskite
BiFeO3
(BFO)
on
construction
and
photocatalytic
activity
P-infused
g-C3N4/U-BiFeO3
(U-BFO/PCN)
heterostructured
composite
photocatalysts.
Favorable
formation
U-BFO/PCN
composites
was
attained
via
urea-aided
morphology-controlled
hydrothermal
synthesis
BFO
followed
by
solvosonication-mediated
fusion
with
already
synthesized
P-g-C3N4
to
form
composites.
The
prepared
bare
photocatalysts’
morphological,
textural,
structural,
optical,
performance
were
meticulously
examined
through
various
analytical
characterization
techniques
photodegradation
aqueous
rhodamine
B
(RhB).
Ellipsoids
flakes
morphological
structures
obtained
for
U-BFO
BFO,
their
effects
successful
fabrication
heterojunctions
also
established.
exhibits
99.2%
efficiency
within
20
min
visible-light
irradiation,
surpassing
BFO/PCN
(88.5%),
PCN
(66.8%),
(26.1%).
pseudo-first-order
kinetics
is
2.41
×
10−1
min−1,
equivalent
2.2
times,
57
4.3
times
(1.08
min−1),
U-BFO,
(4.20
10−3
PCN,
(5.60
10−2
respectively.
recyclability
test
demonstrates
an
outstanding
photostability
after
four
cyclic
runs.
improved
exhibited
can
be
attributed
enhanced
utilization
additional
accessible
active
sites
due
surface
electronic
band
modification
CN
P-doping
effective
charge
separation
achieved
formation.
Language: Английский
XYZ2 (X/Y = Ge, Pb, Sn; Z = Se, S, Te) Two-Dimensional Janus Monolayers for Photocatalytic Water Splitting: A First-Principles Study
Yu Zhigang,
No information about this author
F. R. Xu,
No information about this author
Songli Dai
No information about this author
et al.
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2025,
Volume and Issue:
unknown, P. 136172 - 136172
Published: Jan. 1, 2025
Language: Английский
Efficient piezoelectric catalysis of micron-sized lead-free pervoskites: direct correlation between catalytic properties and piezoelectric constants
Zhenya Wang,
No information about this author
Weiping Gong,
No information about this author
Jianting Li
No information about this author
et al.
Journal of Alloys and Compounds,
Journal Year:
2025,
Volume and Issue:
unknown, P. 181229 - 181229
Published: May 1, 2025
Language: Английский
Defect-Boosted Piezoelectric and Nanozymatic Synergetic Catalysis for Deep Bacterial Abscess Therapy
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: June 4, 2025
Piezocatalytic
therapy,
distinguished
by
its
superior
tissue
penetration
under
ultrasound
activation
and
low
dependence
on
the
oxygen
concentration
for
generating
multiple
reactive
species
(ROS),
has
emerged
as
a
promising
strategy
deep
abscess
treatment.
However,
efficacy
remains
constrained
suboptimal
bandgap,
weak
piezoelectric
responses,
inadequate
surface-active
sites.
To
address
these
limitations,
facile
Ru-atom
doping
is
first
proposed
using
Bi4O5Br2-based
nanosystem
(Bi4O5Br2@Ru)
to
tailor
bandgap
boost
piezo-
enzyme-like
catalysis.
The
Ru
dopants
induce
lattice
distortions
elevate
vacancies
simultaneously,
thereby
enhancing
responses
while
conferring
peroxidase
(POD)-
catalase
(CAT)-like
enzymatic
activities.
Under
excitation,
field
optimizes
conduction
band
alignment
of
Bi4O5Br2@Ru,
POD-like
activity
generate
ROS
including
·OH,
1O2,
·O2-.
mixed
(III/IV)
valence
states
in
Bi4O5Br2@Ru
glutathione
depletion,
further
oxidative
stress
capacity
combat
biofilms.
enhanced
CAT-like
alleviates
hypoxia
within
biofilm
microenvironments.
RNA
transcriptomic
analysis
confirms
that
disrupts
energy
metabolism
interfering
with
tricarboxylic
acid
cycle.
dual-modality
therapy
leverages
engineering
seamlessly
combine
properties
catalytic
functions,
offering
highly
therapeutic
treatment
deep-seated
infectious
diseases.
Language: Английский
Synergetic effect of Fe2O3 and Na2WO4 piezo catalyst to remove pharmaceuticals waste in water
Hawta K. Abdullah,
No information about this author
Sangar S. Ahmed,
No information about this author
Omid Amiri
No information about this author
et al.
Energy Nexus,
Journal Year:
2024,
Volume and Issue:
unknown, P. 100332 - 100332
Published: Oct. 1, 2024
Language: Английский
Poly(L-lactic acid)-BiFeO3/Ti3C2 Scaffolds for Antibacterial Sonodynamic Therapy
Cijun Shuai,
No information about this author
Xingming Long,
No information about this author
Yingxin Yang
No information about this author
et al.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(21), P. 25132 - 25142
Published: Oct. 25, 2024
Bacterial
infection
is
a
severe
challenge
after
artificial
transplantation
due
to
the
lack
of
an
antibacterial
functional
implant,
which
results
in
delayed
healing
or
even
transplant
failure.
Herein,
sonodynamic
strategy
was
proposed
by
integrating
BiFeO3/Ti3C2
heterojunction
into
three-dimensional-printed
poly-L-lactic
acid
scaffold.
BiFeO3
can
be
stimulated
using
ultrasonic
energy
generate
carriers.
Ti3C2,
with
good
conductivity,
form
interfacial
transfer
channel
BiFeO3,
accelerating
charge
transfer.
Additionally,
forming
Schottky
barrier
between
and
Ti3C2
effectively
suppressed
electron
backflow.
The
separation
electron–hole
pairs
significantly
enhanced,
thus
improving
yield
reactive
oxygen
species.
demonstrated
that
scaffold
exhibited
rates
93
91%
against
Gram-negative
Escherichia
coli
Gram-positive
Staphylococcus
aureus
exposed
ultrasound,
respectively.
poly(L-lactic
acid)-BiFeO3/Ti3C2
possessed
biocompatibility
showed
great
potential
for
bone
regeneration.
Language: Английский