Simultaneously Producing H2 and H2O2 by Photocatalytic Water Splitting: Recent Progress and Future
Small,
Год журнала:
2024,
Номер
20(45)
Опубликована: Июль 27, 2024
The
solar-driven
overall
water
splitting
(2H
Язык: Английский
Bypassing the scaling relations in oxygen electrocatalysis with geometry-adaptive catalysts
Catalysis Science & Technology,
Год журнала:
2024,
Номер
14(8), С. 2105 - 2113
Опубликована: Янв. 1, 2024
Geometry-adaptation
during
oxygen
electrocatalysis
makes
catalysts
behave
as
ideal
and
elevates
them
to
the
apex
of
activity
volcano.
Язык: Английский
Potential of nanoporous graphene and functionalized nanoporous graphene derived nanocomposites for environmental membranes – a review
Nanocomposites,
Год журнала:
2024,
Номер
10(1), С. 138 - 158
Опубликована: Апрель 3, 2024
Nanoporous
graphene
own
high
surface
area
and
unique
structural
physical
properties
due
to
nano-sized
pores
in
nanosheet.
has
been
modified
by
the
introduction
of
functional
groups,
doping,
or
nanoparticle
modification
applied
for
nanocomposites.
The
overview
basically
highlights
design,
properties,
potential
functionalized
nanoporous
derived
nanocomposites
advanced
membranes
(desalination/gas/oil
separation),
thermal
management,
electrocatalysts,
micro-supercapacitors.
According
literature,
pore
size
neat
is
3–11
Å
hydroxyl
also
had
nanopore
<10
Å.
Functionalized
revealed
100%
salt
rejection,
while
89%
rejection
altered
properties.
Both
gas
permeance
∼103–105
GPU
towards
separation
CO2,
CH4,
N2,
etc.
Few
attempts
on
micro-supercapacitor
like
molybdenum
disulfide
resulted
volumetric
capacitance
55
F
cm−3
retention
82%.
Forthcoming
research
may
overcome
design/performance
challenges
leading
superior
features
large-scale
utilizations.
Язык: Английский
Boosting the Photocatalytic Performance of g-C3N4 through MoS2 Nanotubes with the Cavity Enhancement Effect
Langmuir,
Год журнала:
2024,
Номер
40(21), С. 11160 - 11172
Опубликована: Май 15, 2024
The
development
of
catalysts
with
high
photon
utilization
efficiency
is
crucial
for
enhancing
the
catalytic
performance
photocatalysts.
Graphitic
carbon
nitride
(g-C
Язык: Английский
Understanding the Curvature Effect on the Structure and Bonding of MoCy Nanoparticles on Carbon Supports
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
The
interaction
between
molybdenum
carbide
(MoCy)
nanoparticles
and
both
flat
curved
graphene
surfaces,
serving
as
models
for
carbon
nanotubes,
was
investigated
by
means
of
density
functional
theory.
A
variety
MoCy
with
different
sizes
stoichiometries
have
been
used
to
explore
adsorption
sites
modes
across
curvature
degrees.
On
graphene,
off-stoichiometric
featuring
more
low-coordinated
Mo
atoms
exhibits
stronger
increased
electron
transfers
from
the
substrate.
This
preferentially
occurs
through
support
C
leading
formation
additional
Mo–C
bonds.
Notably,
strength
increases
on
concave
surfaces
decreases
convex
showing
a
strong
linear
correlation
surface
curvature.
curvature-dependent
behavior
alters
charge
state
nanoparticles,
making
them
more/less
positively
charged
in
concave/convex
regions.
present
results
demonstrate
that
can
be
effectively
tuned
manipulating
stoichiometry,
substrate
curvature,
local
environments,
providing
valuable
guidelines
rational
design
MoCy/C-based
catalysts.
Язык: Английский
Curvature-Influenced Electrocatalytic NRR Reactivity by Heme-like FeN4-Site on Carbon Materials
Molecules,
Год журнала:
2025,
Номер
30(8), С. 1670 - 1670
Опубликована: Апрель 8, 2025
Two-dimensional
carbon
materials
and
their
derivatives
are
widely
applied
as
promising
electrocatalysts
supports
of
single-atom
sites.
Theoretical
investigations
2D
usually
based
on
planar
models,
yet
ignore
local
curvature
brought
by
possible
surface
distortion,
which
can
be
significant
to
the
exact
catalytic
performance
has
been
realized
in
latest
research.
In
this
work,
curvature-influenced
electrocatalytic
nitrogen
reduction
reaction
(NRR)
reactivity
heme-like
FeN4
site
was
predicted
a
first-principle
study,
with
FeN4-CNT(m,m)
(m
=
5~10)
models
adopted
models.
The
results
showed
that
larger
is
favored
for
NRR,
lower
limiting
potential
higher
N2
adsorption
affinity,
while
smaller
shows
NH3
desorption
energy
beneficial
catalyst
recovery.
Using
electronic
structures
logarithm
fitting,
we
also
found
FeN4-CNT(5,5)
an
intermediate-spin
state,
different
from
high-spin
state
exhibited
other
6~10)
curvature.
Язык: Английский
Promoting Electrochemical Reversibility: Concave versus Convex Electrodes
The Journal of Physical Chemistry Letters,
Год журнала:
2025,
Номер
unknown, С. 4189 - 4195
Опубликована: Апрель 20, 2025
The
importance
of
electrode
shape,
alongside
size,
as
key
factors
in
controlling
the
reversibility
or
otherwise
electrochemical
responses,
is
recognized
at
microscopic
level
but
explored
here
via
finite-element
simulation
on
macroscopic
scale.
Reduced
overpotential
seen
for
concave
surfaces
relative
to
flat
convex
surfaces,
providing
an
unexplored
avenue
design
and
fabrication
electrodes,
including
composites
diverse
applications
where
enhanced
desirable,
such
sensors
battery
materials
promotion
electrocatalytic
responses
important.
Язык: Английский
Effect of the Second-Shell Coordination Environment on the Performance of P-Block Metal Single-Atom Catalysts for the Electrosynthesis of Hydrogen Peroxide
Catalysts,
Год журнала:
2024,
Номер
14(7), С. 421 - 421
Опубликована: Июнь 30, 2024
Hydrogen
peroxide
(H2O2)
is
an
important
chemical
with
a
diverse
range
of
industrial
applications
in
synthesis
and
medical
disinfection.
The
traditional
anthraquinone
oxidation
process,
high
energy
consumption
complexity,
being
replaced
by
cost-effective
environmentally
friendly
alternatives.
In
order
to
explore
suitable
catalysts
for
the
electrocatalytic
H2O2,
stability
B,N-doped
graphene
loaded
various
p-block
metal
(PM)
single
atoms
(i.e.,
PM-NxBy:
x
y
represent
number
N
B,
respectively)
effects
different
numbers
positions
B
dopants
second
coordination
shell
on
catalytic
performance
were
studied
density
functional
theory
(DFT)
calculations.
results
show
that
Ga-N4B6
Sb-N4B6
exhibit
enhanced
2e−
oxygen
reduction
reaction
(ORR)
activity
selectivity.
Their
thermodynamic
overpotential
η
values
are
0.01
V,
0.03
V
Ga-N4B6’s
two
configurations
0.02
0
Sb-N4B6’s
configurations.
Electronic
structure
calculations
indicate
PM
atom
adsorbs
OOH*
intermediates
transfers
electrons
into
them,
resulting
activation
O-O
bond,
which
facilitates
subsequent
hydrogenation
reaction.
summary,
extraordinary
ORR
performance,
their
predicted
activities
comparable
those
known
outstanding
(such
as
PtHg4
alloy).
We
propose
effective
strategies
how
enhance
carbon
materials,
elucidate
origin
potential
catalysts,
provide
insights
design
development
electrocatalysts
can
be
used
H2O2
production.
Язык: Английский
Assessing electronic structure modulation strategies toward the development of low‐cost oxygen evolution reaction catalysts
Electron,
Год журнала:
2024,
Номер
2(4)
Опубликована: Окт. 24, 2024
Abstract
Oxygen
evolution
reactions
(OER)
are
critical
to
electrochemical
synthesis
reactions,
including
hydrogen
production
and
organic
hydrogenation.
However,
the
high
cost
of
existing
OER
catalysts
(primarily
Ir/Ru
its
derived
oxides)
limits
their
practical
application
for
synthesis.
To
develop
a
low‐cost,
high‐efficiency
alternative,
we
need
deeper
understanding
both
mechanisms
that
drive
relationship
between
catalyst's
electronic
structure
active
sites.
Here,
summarized
recent
developments
catalysts,
especially
focusing
on
modulation
strategies
subsequent
activity
enhancement.
Most
importantly,
pointed
out
study
directions
further
work.
Язык: Английский