ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(1), P. 2365 - 2375
Published: Dec. 17, 2024
Surface
oxidation/reduction
processes,
driven
by
varying
electrochemical
potentials,
can
substantially
impact
catalyst
effectiveness
and,
consequently,
electrolyzer
performance.
This
study
combines
theoretical
and
experimental
approaches
to
explore
the
surface
redox
behavior
of
nickel
oxides,
which
are
cost-effective
efficient
catalysts
for
many
reactions.
Pourbaix
diagrams
three
different
phases
i.e.,
hydroxide
(Ni(OH)2),
oxyhydroxide
(NiOOH),
dioxide
(NiO2),
were
constructed
using
density
functional
theory-based
simulations.
Various
methods,
including
cyclic
voltammetry,
in
situ
Raman
spectroscopy,
titration,
employed
probe
processes
oxide
thin
films.
Our
findings
indicate
that
ABAB
stacking
sequence
Ni(OH)2
lacks
stability
under
oxidizing
conditions
host
oxidation
(deprotonation)
events,
while
AABBCC
NiOOH
is
energetically
favorable
due
presence
interlayer
hydrogen
bonding.
Rapid
charge
transfer
facilitated
bonding
accounts
higher
reactivity
partially
oxidized/reduced
(001)
surfaces
compared
NiO2
with
same
stoichiometry,
where
absent.
Insights
presented
this
work
offer
guidelines
optimizing
operational
tailoring
structures
states
oxides
enhance
performance
applications
such
as
electrocatalysis
supercapacitors.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 5, 2025
Abstract
As
a
pivotal
bio‐based
building
block,
2,5‐furandicarboxylic
acid
(FDCA)
holds
immense
and
broad
application
potential
in
the
chemistry
industry.
Its
polymeric
derivative,
polyethylene
furandicarboxylate
(PEF),
emerges
as
an
appealing
alternative
to
conventional
petroleum‐based
terephthalate
(PET).
The
electrochemical
route
for
oxidizing
5‐hydroxymethylfurfural
(HMF)
into
FDCA
presents
significant
advantages
over
thermochemical
processes,
without
requirements
of
high
temperature,
pressure,
chemical
oxidants,
precious
metal
catalysts,
featuring
higher
energy
efficiency.
Furthermore,
electrosynthesis
at
anode
can
be
synergistically
integrated
with
selective
reduction
reactions
cathode,
enabling
simultaneous
production
two
desirable
value‐added
products
further
enhancing
overall
utilization
This
work
reviews
advancements
electrocatalytic
HMF
(EHTF),
encompassing
catalyst
design,
reaction
mechanisms,
coupling
strategies,
reactor
configurations.
It
also
indicates
challenges
opportunities
EHTF
provides
insights
future
development
directions.
Chemistry,
Journal Year:
2025,
Volume and Issue:
7(1), P. 17 - 17
Published: Feb. 1, 2025
5-hydroxymethylfurfural
(HMF)
is
oxidized
to
2,5-furandicarboxylic
acid
(FDCA),
which
serves
as
a
sustainable
alternative
the
petrochemical
derivative
terephthalic
polyester
monomer.
Currently,
noble
metal
catalysts
that
combine
high
HMF
conversion
rates
with
FDCA
selectivity
have
become
one
of
mainstream
catalytic
systems
for
oxidation.
This
paper
summarizes
and
discusses
research
progress
on
oxidation
over
different
metal-based
by
combining
DFT
theoretical
calculations,
introducing
various
reaction
pathways
mechanisms
It
also
analyzes
characteristics
electronic
properties
active
sites,
geometric
effects,
metal–support
interactions,
confinement
discussing
revealing
roles
activation
structure
catalysts,
substances,
valence
states,
activity,
relationship
between
C=O
OH
groups.
Finally,
it
presents
views
challenges
future
development
in
design
catalysts.
The Chemical Record,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
The
electrocatalytic
upgrading
of
5‐hydroxymethylfurfural
(HMF,
5‐(Hydroxymethyl)
furan‐2‐carbaldehyde)
has
emerged
as
a
renewable
and
environmentally
friendly
means
for
the
production
high‐value
chemicals,
with
oxidation
product
furan‐2,5‐dicarboxylic
acid
(FDCA,
2,5‐furandicarboxylic
acid)
possessing
economic
viability
in
substituting
terephthalic
polymer
synthesis.
This
article
reviews
recent
advancements
selective
HMF
to
FDCA,
including
reaction
pathways,
mechanisms,
well
activity
descriptors
(HMFOR),
alongside
advanced
operando
characterization
techniques.
Subsequently,
representative
HMFOR
catalysts,
encompassing
noble
metal,
non‐noble
transition
metal‐based
catalysts
metal
free‐based
are
presented.
Then
strategies
regulating
longevity
were
introduced,
followed
by
an
exploration
future
prospects
development
catalysts.
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(8)
Published: May 6, 2025
Energy-efficient
water
electrolysis
is
one
of
the
most
promising
techniques
for
generating
green
hydrogen
as
a
carbon-free
energy
source.
As
half-reaction
splitting,
oxygen
evolution
reaction
kinetically
sluggish,
leading
to
large
thermodynamic
potential
gaps
compared
reaction.
In
terms
cost-effective
generation,
mitigating
this
overpotential
challenging
obstacle,
but
it
remains
hurdle
overcome.
It
necessary
advance
energy-saving
production
by
substituting
with
an
thermodynamically
favorable
anodic
Additionally,
depending
on
specific
small
molecules
used
oxidation
reaction,
possible
reduce
environmentally
harmful
substances
and
produce
value-added
chemicals.
Nickel-based
electrocatalysts
have
received
growing
attention
their
application
in
electrochemical
reactions
due
affordability,
versatility
structural
tuning,
ability
function
active
sites
bond
formation
cleavage.
The
purpose
paper
probe
how
morphology,
structure,
composition
these
catalysts
affect
electrocatalyst
performance
molecule
oxidation.
Explaining
relationships
can
accelerate
development
sustainable
identifying
design
principles
high-performance
nickel-based
electrocatalysts.
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
summaries
recent
advancement
in
selective
electrooxidation
of
5-hydroxymethylfurfural
towards
the
production
value-added
2,5-furanodiformic
acid.
