Applied Physics Reviews,
Journal Year:
2024,
Volume and Issue:
11(4)
Published: Oct. 8, 2024
Significant
efforts
have
been
dedicated
to
hydrogen
production
through
photocatalytic
water
splitting
(PWS)
over
the
past
five
decades.
However,
achieving
commercially
viable
solar-to-hydrogen
conversion
efficiency
in
PWS
systems
remains
elusive.
These
face
intrinsic
and
extrinsic
challenges,
such
as
inadequate
light
absorption,
insufficient
charge
separation,
limited
redox
active
sites,
low
surface
area,
scalability
issues
practical
designs.
To
address
these
issues,
conventional
strategies
including
heterojunction
engineering,
plasmonics,
hybridization,
lattice
defects,
sensitization,
upconversion
processes
extensively
employed.
More
recently,
innovative
hybrid
like
photonic
crystal-assisted
polarization
field-assisted
emerged,
which
improve
absorption
separation
by
harnessing
slow
photon
effect,
multiple
scattering,
piezoelectric,
pyroelectric,
ferroelectric
properties
of
materials.
This
review
article
aims
provide
a
comprehensive
examination
summary
new
synergistic
approaches,
integrating
plasmonic
effects,
processes,
crystal
photocatalysis.
It
also
explores
role
temperature
suppressing
exciton
recombination
during
photothermic
highlights
emerging
effects
magnetic
fields,
periodic
illumination,
many-body
large-hole
polaron,
anapole
excitations,
hold
significant
potential
advance
technology
facilitate
renewable
generation.
Small Structures,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Although
Plasmon‐based
photocatalyst
has
been
employed
for
designing
novel
molecules,
achieving
control
over
the
reaction
selectivity
remained
a
challenge.
Herein,
unravels
photocatalytic
selective
oxidation
of
4‐amino
thiophenol
(4‐ATP)
to
4‐nitrothiophenol
(4‐NTP)
or
4,4′‐dimercaptoazoxybenzene
(4,4′‐DMAoxB)
4,4′‐dimercaptoazobenzene
(4,4′‐DMAB)
under
670
nm
visible
light
irradiation.
Oxidation
and
pathway
are
shown
that
can
be
manipulated
by
controlling
presence
Ag
+
,
hot
holes,
reactive
oxygen
species
(ROS)
plasmonic
gold
nanopopcorn
(AuNPop)–tungsten
oxide
(WO
3
)
nanowire
heterojunction.
Reaction
mechanism
is
monitored
real‐time
in
situ
surface‐enhanced
Raman
spectroscopy,
which
demonstrates
4‐hydroxylaminothiophenol
(4‐HATP*)
4‐nitrosothiophenol
(4‐NSTP*)
key
transient
intermediates.
Reported
data
shows
absence
4‐ATP
oxidized
4‐NTP
through
hole
ROS‐mediated
process
follows
→
4‐NSTP*
pathway.
However,
oxidizes
4,4′‐DMAoxB
via
simultaneous
harvesting
ROS,
4‐HATP*
mechanism.
Additionally,
4,4′‐DMAB
AuNPop
without
WO
4‐DMAB
provides
insights
new
heterostructure
photocatalysts
process.
