ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(30), P. 11409 - 11418
Published: July 16, 2024
The
production
of
hydrogen
peroxide
(H2O2)
by
combining
photocatalytic
oxygen
(O2)
reduction
with
water
(H2O)
oxidation
is
a
satisfactory
substitute
for
the
industrial
anthraquinone
process.
But
efficiency
H2O2
generation
still
low,
especially
in
heterogeneous
reactions,
owing
to
poor
mass
transfer
and
weak
H2O
oxidation.
Hereby,
porous
organic
framework
(BPYTEA-POF)
hexagonal
hollow
nanotube
structure
was
synthesized
through
5,5′-dibromo-2,2′-bipyridine
(BPY)
reacting
tris(4-ethynylphenyl)amine
(TEA)
Sonogashira
coupling
reaction
without
template,
which
contains
2,2′-bipyridine
active
site.
BPYTEA-POF
morphology
hierarchical
wall
beneficial
and/or
diffusion
substrate
via
siphonic
effect;
meanwhile,
it
benefits
exposure
catalytic
site,
boosts
contact
O2
site
rapidly
dissociates
generated
H2O2,
thus
improving
efficiency.
At
same
time,
moiety
capable
effectually
weakening
O–H
bonds
promoting
produce
proton
(H+);
then,
produced
H+
were
used
efficient
under
additive-free
condition.
definite
specific
sites
enhance
initial
rate
up
3446
μmol
gcat–1
h–1,
condition
visible-light
irradiation
(λ
≥
400
nm)
any
additional
additive.
