Global Challenges,
Journal Year:
2024,
Volume and Issue:
8(11)
Published: Oct. 2, 2024
Abstract
Photocatalytic
water
splitting
is
an
environmentally
friendly
hydrogen
production
method
that
uses
abundant
renewable
resources
such
as
and
sunlight.
While
Titanium
dioxide
(TiO
2
)
photocatalyst
exhibits
excellent
properties,
its
high
band
gap
limits
absorption
to
ultraviolet
(UV)
irradiation,
resulting
in
low
photo
conversion
efficiency.
This
review
explores
various
modification
techniques
aimed
at
enhancing
the
efficiency
of
TiO
under
visible
light
irradiation.
Factors
influencing
photocatalytic
reaction,
catalyst
structure,
morphology,
gap,
sacrificial
reagents,
intensity,
temperature,
potential
Hydrogen
(pH)
are
examined.
also
summarizes
different
synthesis
methods,
types
reactors,
provides
insights
into
quantum
yield.
Finally,
addresses
challenges
future
outlook
splitting.
Materials Science in Semiconductor Processing,
Journal Year:
2024,
Volume and Issue:
181, P. 108661 - 108661
Published: July 1, 2024
Photocatalysis
plays
a
vital
role
in
addressing
environmental
remediation
and
energy
generation.
Carbon
quantum
dots
(CQDs)
represent
superior
category
of
photocatalysts
devoid
metals,
boasting
remarkable
electron
transfer
capabilities,
up-conversion
photoluminescence,
non-toxic
properties.
Notably,
CQDs
can
function
independently
as
or
become
part
composite
photocatalytic
materials.
This
article
explores
the
precursor
materials
used
CQD
production
various
methods
for
preparing
enhanced
with
CQDs,
such
hydrothermal,
solvothermal,
microwave,
chemical
oxidation,
etc.
Furthermore,
we
provide
an
extensive
overview
recent
advancements
pristine,
doped,
CQD-based
photocatalysts,
encompassing
applications
like
organic
pollutant
degradation
water,
hydrogen
production,
CO2
photoreduction
fuel
The
effect
surface
computational
modelling
was
also
addressed.
Finally,
addressed
challenges
potential
research
avenues
CQD-enhanced
photocatalysts.
Journal of Renewable and Sustainable Energy,
Journal Year:
2024,
Volume and Issue:
16(3)
Published: May 1, 2024
Biogas
is
a
product
composed
of
mixture
gases
resulting
from
the
biological
decomposition
organic
material,
consisting
primarily
methane
gas
and
carbon
dioxide,
besides
smaller
amounts
other
gases.
The
current
study
aims
to
comprehensively
analyze
waste-based
biogas
production
ensure
sustainability
in
biofuel
process.
An
advanced
systematic
bibliometric
analysis
using
keywords,
co-citations,
bibliographic
coupling
was
performed
on
641
peer-reviewed
articles
Web
Science
conclude
this
goal
further.
This
covers
period
2000
2022,
little
more
than
20
years.
methodology
used
reveals
several
themes
that
have
been
identified
addressed
articles:
(1)
importance
topic
academia
by
country
which
they
were
analyzed;
(2)
sectors
contributing
production;
(3)
equipment
(4)
most
cited
waste
sources
database;
(5)
application
purpose
biogas;
(6)
relevance
energy
sources;
(7)
areas
interest
where
biofuels
are
used;
(8)
comparison
between
capacity
number
publications
country.
Furthermore,
potentials,
limitations,
perspectives,
future
trends
highlighted
improve
process
also
considered.
Therefore,
conclusion
can
be
sustainable
goods
with
added
value
for
society.
