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@ARTICLE{Tofighi:398556,
author = {Tofighi, Ghazal and Gaur, Abhijeet and Doronkin, Dmitry and
Lichtenberg, Henning and Wang, Wu and Wang, Di and Rinke,
Guenter and Ewinger, Angela and Dittmeyer, Roland and
Grunwaldt, Jan-Dierk},
title = {{M}icrofluidic {S}ynthesis of {U}ltrasmall {A}u{P}d
{N}anoparticles with a {H}omogeneously {M}ixed {A}lloy
{S}tructure in {F}ast {C}ontinuous {F}low for {C}atalytic
{A}pplications},
journal = {The journal of physical chemistry / C},
volume = {-},
issn = {1932-7455},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {PUBDB-2017-14120},
pages = {-},
year = {2017},
abstract = {Ultrasmall Au, Pd and AuPd nanoparticles (NPs) stabilized
by PVP were prepared in a microfluidic reactor with cyclone
micromixers for rapid mixing of reactants. In this system,
pulsation-free flow of reactants was achieved at a total
flow rate of 2.6 L h-1. A rapid homogeneous mixing within 2
ms was obtained with three cyclone micromixers. Controlled
NP nucleation and growth occur in a following meandering
microchannel. The resulting colloidal NPs were characterized
thoroughly by various complementary techniques e.g. high
resolution transmission electron microscopy (HRTEM),
energy-dispersive X-ray spectroscopy (EDX) and
Ultraviolet-visible spectroscopy. The average NP diameter
was about 1 nm with a narrow size distribution and electron
microscopy showed homogeneously alloyed NPs. Moreover, the
particles were supported on TiO2. for catalytic tests and
further structural characterization. Electron microscopy
showed a uniform distribution of NPs on the support with
some aggregation. X-ray absorption spectroscopy (XAS)
confirmed the formation of well-mixed AuPd alloys in NP
cores with Pd-rich surfaces. Finally, 1 $wt.\%$ metal loaded
supports showed catalytic activities in CO oxidation in the
following order: Au/TiO2. ≥ AuxPdy/TiO2. ≥ Pd/TiO2.
Hence, the physical and chemical properties of these
catalysts can be fine-tuned.},
cin = {DOOR},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (POF3-622)},
pid = {G:(DE-HGF)POF3-6G3},
experiment = {EXP:(DE-H253)P-P65-20150101 / EXP:(DE-H253)P-P64-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000423652700030},
doi = {10.1021/acs.jpcc.7b11383},
url = {https://bib-pubdb1.desy.de/record/398556},
}