Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: April 10, 2024
Water
electrolysis
is
among
the
recent
alternatives
for
generating
clean
fuels
(hydrogen).
It
an
efficient
way
to
produce
pure
hydrogen
at
a
rapid
pace
with
no
unwanted
by-products.
Effective
and
cheap
water-splitting
electrocatalysts
enhanced
activity,
specificity,
stability
are
currently
widely
studied.
In
this
regard,
noble
metal-free
transition
metal-based
catalysts
of
high
interest.
Iron
sulfide
(FeS)
one
essential
water
splitting
because
its
unique
structural
electrochemical
features.
This
article
discusses
significance
FeS
nanocomposites
as
oxygen
evolution
reaction
(OER),
(HER),
reduction
(ORR),
overall
splitting.
have
been
studied
also
energy
storage
in
form
electrode
materials
supercapacitors
lithium-
(LIBs)
sodium-ion
batteries
(SIBs).
The
characteristics
nanocomposites,
well
synthesis
processes,
discussed
work.
discussion
correlates
these
features
requirements
associated
reactions.
As
result,
study
provides
road
map
researchers
seeking
economically
viable,
environmentally
friendly,
fields
green
production
storage.
Chemistry of Materials,
Journal Year:
2023,
Volume and Issue:
35(19), P. 7878 - 7903
Published: Aug. 18, 2023
Since
the
discovery
of
deep
eutectic
solvents
(DESs)
in
2003,
significant
progress
has
been
made
field,
specifically
advancing
aspects
their
preparation
and
physicochemical
characterization.
Their
low-cost
unique
tailored
properties
are
reasons
for
growing
importance
as
a
sustainable
medium
resource-efficient
processing
synthesis
advanced
materials.
In
this
paper,
significance
these
designer
beneficial
features,
particular
with
respect
to
biomimetic
materials
chemistry,
is
discussed.
Finally,
article
explores
unrealized
potential
advantageous
DESs,
focusing
on
development
biomineralization-inspired
hybrid
It
anticipated
that
can
stimulate
new
concepts
advances
providing
reference
breaking
down
multidisciplinary
borders
field
bioinspired
especially
at
nexus
computation
experiment,
develop
rigorous
materials-by-design
paradigm.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
2
Published: Jan. 1, 2025
Abstract
Iron
sulfide
(Fe-S)
minerals
such
as
mackinawite
(FeS),
greigite
(Fe
3
S
4
)
and
pyrite
(FeS
2
are
widespread
on
Earth,
where
their
formation
dissolution
strongly
linked
to
the
biogeochemical
cycles
of
iron,
sulfur,
carbon,
oxygen,
nutrients
trace
metals.
Recent
studies
have
shed
light
how
microorganisms
mediate
formation,
with
breakthroughs
biogenic
pyrite.
In
this
review,
we
highlight
pathways
Fe-S
minerals,
starting
increasingly
recognized
roles
Fe(III)
intermediate
sulfur
species
(
e.g.
0
polysulfides)
during
initial
steps.
The
mechanisms
by
which
affect
mineral
compiled
discussed
for
low
(25–35°C)
high
(≥
80°C)
temperatures,
specific
examples
from
experimental
studies.
morphology
precipitation
rates
obtained
experiments
compared
natural
environments,
similarities
differences
critically
discussed.
We
then
review
current
state
art
in
context
origin
life
environmental
proxies
biosignatures
geological
record
using
texture
chemical
isotopic
compositions.
end
highlighting
importance
societal
issues,
sequestration
organic
acid
drainages,
metal
recovery
nitrate
removal,
potential
use
technological
bio-materials
future.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: April 7, 2025
Biogeochemical
mineralization
is
increasingly
recognized
as
a
significant
factor
in
the
formation
of
submarine
hydrothermal
sulfide
deposits.
While
several
mechanisms
by
which
organisms
may
facilitate
metal
deposition
have
been
documented
many
seafloor
deposits,
potential
involvement
biogenic
processes
deposits
southern
Mid-Atlantic
Ridge
(SMAR)
has
largely
overlooked
until
now.
In
this
study,
we
investigate
chimney
sample
from
volcanic-hosted
Tongguan
field
on
SMAR
and
present
lines
evidence
for
biogeochemical
mineralization.
Mineralogical
analysis
infers
four
types
pyrite
chalcopyrite
structures:
macrobiotic-related
tube
structures,
microbial-related
quasi-stromatolite,
quasi-oncolite
globular
structures.
These
structures
exhibit
selective
enrichment
elements
such
Mn,
Pb,
Cu
compared
to
abiotic
pyrite.
In-situ
sulfur
isotope
studies
indicate
that
minerals
possess
lower
δ
34
S
values
than
minerals.
We
identified
three
biomineralization
mechanisms:
an
“active”
process
mediated
macro-organism,
“passive”
associated
with
microbial
mats,
assimilatory
sulfate
reduction
process.
Our
research
suggests
role
should
be
given
further
consideration.
Environmental Pollution,
Journal Year:
2022,
Volume and Issue:
306, P. 119451 - 119451
Published: May 11, 2022
Bacteria
play
crucial
roles
in
the
biogeochemical
cycle
of
arsenic
(As)
and
selenium
(Se)
as
these
elements
are
metabolized
via
detoxification,
energy
generation
(anaerobic
respiration)
biosynthesis
(e.g.
selenocysteine)
strategies.
To
date,
biomineralization
bacteria
were
studied
separately.
In
this
study,
anaerobic
metabolism
As
Se
Shewanella
sp.
O23S
was
investigated
separately
mixed,
with
an
emphasis
put
on
products
process.
Multiple
analytical
techniques
including
ICP-MS,
TEM-EDS,
XRD,
Micro-Raman,
spectrophotometry
surface
charge
(zeta
potential)
employed.
is
capable
reducing
selenate
(SeO42-)
selenite
(SeO32-)
to
red
Se(-S)0,
arsenate
(AsO43-)
arsenite
(AsO33-).
The
release
H2S
from
cysteine
led
precipitation
AsS
minerals:
nanorod
granular
As2S3.
When
oxyanions
both
As-S
Se(-S)0
biominerals
synthesized.
All
extracellular,
amorphous
presented
a
negative
(-24
-38
mV).
Kinetic
analysis
indicated
following
reduction
yields:
SeO32-
(90%),
AsO43-
(60%),
SeO42-
(<10%).
mix
decrease
removal
30%,
while
yield
unaffected
(88%).
Interestingly,
incubated
boosted
(71%).
exclusive
extracellular
formation
might
indicate
respiratory
process
characteristic
various
species
strains.
This
first
study
documenting
complex
interplay
between
oxyanions:
decreased
reduction,
whereas
stimulated
reduction.
Further
investigation
needs
clarify
whether
employs
multi-substrate
enzymes
or
separate,
high
affinity
for
oxyanion
respiration.
