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@ARTICLE{Nogueira:888944,
author = {Nogueira, André E. and Silva, Gelson T. S. T. and
Oliveira, Jéssica A. and Lopes, Osmando and Torres, Juliana
A. and Carmo, Marcelo and Ribeiro, Caue},
title = {{C}u{O} {D}ecoration {C}ontrols {N}b 2 {O} 5
{P}hotocatalyst {S}electivity in {CO} 2 {R}eduction},
journal = {ACS applied energy materials},
volume = {3},
number = {8},
issn = {2574-0962},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2020-05343},
pages = {7629 - 7636},
year = {2020},
abstract = {The reformation of CO2 through photocatalytic processes to
obtain products with high energy value and compatibility
with the current energy infrastructure is a compelling
strategy to minimize the emission of CO2 into the
atmosphere, one of the main greenhouse gases. However,
practical application of such a photocatalytic system
requires significant efforts for improved CO2 photoreduction
performance and product selectivity. Thus, in the present
work, CuO nanoparticles were combined with Nb2O5 in order to
improve the photocatalytic properties of these
semiconductors in the CO2 photoreduction process. Nb2O5/CuO
heterojunctions were prepared via a solvothermal treatment
method, while the experimental tools, such as FESEM, HRTEM,
and DRS, were employed to evaluate the microstructural and
electronic properties. We describe how CuO decoration over
Nb2O5 adjusts its selectivity for CO2 reduction to CH4,
HCOOH, or H3CCOOH in different contents. An investigation of
CO2 photoreduction using different electron
donors/scavengers (water, sodium oxalate, and potassium
bromate) under ultraviolet radiation revealed that its
decoration influences local CO production by modifying the
selectivity. CO has been confirmed as the main intermediate
for HCOOH and CH3COOH production, and CO2 reduction
efficiency increases at low CuO content $(2.5\%$ wt),
leading to the formation of soluble hydrocarbons, and
increases for CH4 in higher amounts $(10\%$ wt).},
cin = {IEK-14},
ddc = {540},
cid = {I:(DE-Juel1)IEK-14-20191129},
pnm = {134 - Electrolysis and Hydrogen (POF3-134)},
pid = {G:(DE-HGF)POF3-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000563784400043},
doi = {10.1021/acsaem.0c01047},
url = {https://juser.fz-juelich.de/record/888944},
}