Zobrazeno 1 - 10
of 236
pro vyhledávání: '"Marc Heggen"'
Autor:
Alexander Eberst, Binbin Xu, Karsten Bittkau, Weiyuan Duan, Andreas Lambertz, Ansgar Meise, Marc Heggen, Rafal E. Dunin‐Borkowski, Uwe Rau, Kaining Ding
Publikováno v:
Advanced Physics Research, Vol 3, Iss 9, Pp n/a-n/a (2024)
Abstract Transparent conducting oxides, like indium tin oxide, enable lateral charge carrier transport in silicon heterojunction solar cells. However, their deposition can damage the passivation quality in the solar cell. This damage during the sputt
Externí odkaz:
https://doaj.org/article/e09553890f9641fb8737a9c15d3ea43e
Publikováno v:
Small Science, Vol 4, Iss 8, Pp n/a-n/a (2024)
Metallic nanoparticles are essential materials in various applications, such as nanomedicine, nanotechnology, and catalysis. While it is known that their catalytic performance is determined by their microstructure and thus by their preparation, the i
Externí odkaz:
https://doaj.org/article/a92fecf401a74828ab014a4bdbfc945b
Autor:
Natalie Wolff, Oleg Prymak, Nataniel Białas, Torsten Schaller, Kateryna Loza, Felix Niemeyer, Marc Heggen, Claudia Weidenthaler, Cristiano L. P. Oliveira, Matthias Epple
Publikováno v:
Nanomaterials, Vol 14, Iss 17, p 1449 (2024)
Ultrasmall silver nanoparticles (2 nm) were prepared by reduction with sodium borohydride (NaBH4) and stabilized by the ligand glutathione (a tripeptide: glycine–cysteine–glutamic acid). NMR spectroscopy and optical spectroscopy (UV and fluoresce
Externí odkaz:
https://doaj.org/article/0508a78dfdb64f9192d3442539019ca9
Autor:
Natalie Wolff, Nataniel Białas, Kateryna Loza, Marc Heggen, Torsten Schaller, Felix Niemeyer, Claudia Weidenthaler, Christine Beuck, Peter Bayer, Oleg Prymak, Cristiano L. P. Oliveira, Matthias Epple
Publikováno v:
Materials, Vol 17, Iss 15, p 3702 (2024)
Ultrasmall nanoparticles (diameter 2 nm) of silver, platinum, and bimetallic nanoparticles (molar ratio of Ag:Pt 0:100; 20:80; 50:50; 70:30; 100:0), stabilized by the thiolated ligand glutathione, were prepared and characterized by transmission elect
Externí odkaz:
https://doaj.org/article/97f6ab1c91a242eb9f5f7a2a44909469
Publikováno v:
Materials Research Letters, Vol 11, Iss 5, Pp 367-373 (2023)
ABSTRACTMetadislocations are novel defects recently identified in complex metallic alloys. It was reasoned that their propagation necessarily requires the orchestrated motion of hundreds of atoms along various crystallographic directions per elementa
Externí odkaz:
https://doaj.org/article/a59693c6c00b416084da6ea05f55f851
Autor:
Daniel Göhl, Paul Paciok, Zhenshu Wang, Jin Soo Kang, Marc Heggen, Karl J. J. Mayrhofer, Yuriy Román‐Leshkov, Marc Ledendecker
Publikováno v:
Nano Select, Vol 4, Iss 4, Pp 271-277 (2023)
Abstract The stability of nanoparticles is a major challenge in thermal and electrocatalysis. This is especially true for core‐shell nanoparticles where only a few monolayers of noble metal protect the usually non‐noble core material. In this wor
Externí odkaz:
https://doaj.org/article/2ffc9b839632410aaa46394b2653741f
Autor:
Marc Ledendecker, Paul Paciok, Wojciech T. Osowiecki, Marc Pander, Marc Heggen, Daniel Göhl, Gaurav A. Kamat, Andreas Erbe, Karl J. J. Mayrhofer, A. Paul Alivisatos
Publikováno v:
Communications Chemistry, Vol 5, Iss 1, Pp 1-7 (2022)
Core-shell particles with thin noble metal shells represent an attractive material class with potential for various applications ranging from catalysis to biomedical applications, but the synthesis of well-defined core-shell architectures remains hig
Externí odkaz:
https://doaj.org/article/c78cbecb90c8499fad1733bad2afdd18
Autor:
Núria J. Divins, David Kordus, Janis Timoshenko, Ilya Sinev, Ioannis Zegkinoglou, Arno Bergmann, See Wee Chee, Simon Widrinna, Osman Karslıoğlu, Hemma Mistry, Mauricio Lopez Luna, Jian Qiang Zhong, Adam S. Hoffman, Alexey Boubnov, J. Anibal Boscoboinik, Marc Heggen, Rafal E. Dunin-Borkowski, Simon R. Bare, Beatriz Roldan Cuenya
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
The nature of the active species over Cu/ZnO catalysts for methanol synthesis remains elusive. Here, the authors shed light on the evolution of the nanoparticle/support interface and correlate its structural and chemical transformations with changes
Externí odkaz:
https://doaj.org/article/205a8f6d445b46d4a1beb179b9f7558e
Autor:
Alexander Rostek, Marina Breisch, Kevin Pappert, Kateryna Loza, Marc Heggen, Manfred Köller, Christina Sengstock, Matthias Epple
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 2763-2774 (2018)
For a comparative cytotoxicity study, nanoparticles of the noble metals Rh, Pd, Ag, Pt, and Au (spherical, average diameter 4 to 8 nm) were prepared by reduction in water and colloidally stabilized with poly(N-vinyl pyrrolidone) (PVP). Thus, their sh
Externí odkaz:
https://doaj.org/article/ca32ff6adbb641158cacc75d58b8a355
Autor:
Chunhua Cui, Marc Heggen, Wolf-Dietrich Zabka, Wei Cui, Jürg Osterwalder, Benjamin Probst, Roger Alberto
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Atomically disperse catalysts can offer promising activity due to the high exposure of active sites. Here, iridium complexes in solution undergo a binding equilibrium with a nickel oxide surface resulting in atomically disperse iridium and high turno
Externí odkaz:
https://doaj.org/article/98a9f6358a194c4080eca67b1edf72e0