Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(35)
Published: June 17, 2022
Abstract
Bio‐nano
hybrids
with
methanogens
and
nano‐semiconductors
provide
an
innovative
strategy
for
solar‐driven
CO
2
‐to‐CH
4
conversion;
however,
the
efficiency
mismatch
between
electron
production
utilisation
results
in
low
quantum
yield
CH
selectivity.
Herein,
we
report
integration
of
metal‐free
polymeric
carbon
nitrides
(CN
x
)
decorated
cyanamide
(NCN)
groups
Methanosarcina
barkeri
(
M.
b
).
The
self‐assembled
‐
NCN
CN
exhibited
a
50.3
%
92.3
selectivity
under
illumination,
which
outperforms
other
reported
bio‐nano
hybrid
systems
photocatalytic
reduction.
This
excellent
performance
was
attributed
to
distinct
capacitance
conductive
effects
,
promoted
storage
redistribution
at
biotic–abiotic
interface
alleviate
recombination
losses
side
reaction.
study
provides
new
design
guidelines
sustainable
reduction
into
fuels.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2019,
Volume and Issue:
7(10), P. 9655 - 9662
Published: April 23, 2019
Anaerobic
digestion
technology
is
a
promising
method
to
reduce
the
usage
of
fossil
fuels
by
transforming
organic
waste
into
biogas.
Nano
zerovalent
iron
(nZVI)
and
nano
oxide
have
been
reported
affect
metabolism
modes
anaerobic
digestion,
i.e.,
interspecies
hydrogen
transfer
(IHT)
direct
electron
(DIET).
However,
effects
nanoparticles
on
extracellular
polymeric
substance
(EPS)
potentially
capable
participating
in
mass
or
these
two
remains
unclear.
In
this
study,
addition
nanomagnetite
(nFe3O4)
significantly
enhanced
performance
treatment,
while
adding
nZVI
led
decline
performance.
nFe3O4
stimulated
secretion
proteins
humic
substances
EPS,
which
were
confirmed
electroactive
serve
as
shuttles
enhance
DIET
pathway
digestion.
contrast,
increased
EPS
especially
polysaccharide
resist
cell
disruption
caused
nZVI,
resulted
an
inefficient
decrease
IHT.
These
results
agreement
with
microbial
community
analysis
functional
gene
prediction.
