Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Alexie M. Kolpak"'
Autor:
Robin P. Forslund, William G. Hardin, Xi Rong, Artem M. Abakumov, Dmitry Filimonov, Caleb T. Alexander, J. Tyler Mefford, Hrishikesh Iyer, Alexie M. Kolpak, Keith P. Johnston, Keith J. Stevenson
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
Water electrolysis provides a potential means to large-scale renewable fuel generation, although sluggish oxygen evolution kinetics challenges progress. Here, authors report on Ruddlesden–Popper oxides as active oxygen evolution electrocatalysts th
Externí odkaz:
https://doaj.org/article/7bddd8ca046341fdbedcd5afbae8c6cd
Autor:
Woosung Park, Giuseppe Romano, Ethan C. Ahn, Takashi Kodama, Joonsuk Park, Michael T. Barako, Joon Sohn, Soo Jin Kim, Jungwan Cho, Amy M. Marconnet, Mehdi Asheghi, Alexie M. Kolpak, Kenneth E. Goodson
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Abstract Here we study single-crystalline silicon nanobeams having 470 nm width and 80 nm thickness cross section, where we produce tortuous thermal paths (i.e. labyrinths) by introducing slits to control the impact of the unobstructed “line-of-sig
Externí odkaz:
https://doaj.org/article/a37f7acf0ba04833997a9c8eac48e890
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
Abstract Modern ab initio methods have rapidly increased our understanding of solid state materials properties, chemical reactions, and the quantum interactions between atoms. However, poor scaling often renders direct ab initio calculations intracta
Externí odkaz:
https://doaj.org/article/73f316d424fc41c6a69484affeee9b87
Autor:
Levi C. Lentz, Alexie M. Kolpak
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract The performance of bulk organic and hybrid organic-inorganic heterojunction photovoltaics is often limited by high carrier recombination arising from strongly bound excitons and low carrier mobility. Structuring materials to minimize the len
Externí odkaz:
https://doaj.org/article/f890237bb1234d98bbcee98b6f9e8e2a
Autor:
J. Tyler Mefford, Xi Rong, Artem M. Abakumov, William G. Hardin, Sheng Dai, Alexie M. Kolpak, Keith P. Johnston, Keith J. Stevenson
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-11 (2016)
Perovskite oxides are attractive candidates as catalysts for water electrolysis however their rational design is rare. Here, the authors report a series of cobaltite perovskites where the covalency of the Co-O bond and concentration of oxygen vacanci
Externí odkaz:
https://doaj.org/article/0268273658f8439fb2b9918223f5789d
Autor:
Levi C. Lentz, Alexie M. Kolpak
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-1 (2018)
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Externí odkaz:
https://doaj.org/article/f32e798bc663461c80f8c55f167e8860
Autor:
Alexie M. Kolpak, Kyoung Won Park
Publikováno v:
Communications Chemistry, Vol 2, Iss 1, Pp 1-10 (2019)
The conduction and valence band edges (EC and EV) of a material relative to the water redox potential levels are critical factors governing photocatalytic water splitting activity. Here we discuss the large discrepancy in the experimentally measured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a5d209567131c37968c9c7382a9c0cd
http://link.springer.com/article/10.1038/s42004-019-0179-3
http://link.springer.com/article/10.1038/s42004-019-0179-3
Autor:
Daniela Zanchet, Danielle Santos Gonçalves, Aaron Garg, Jong Suk Yoo, Linxi Wang, Yuriy Román-Leshkov, Robert M. Rioux, Zhenshu Wang, Alexie M. Kolpak, Yusu Liu
Publikováno v:
ACS Catalysis. 9:7090-7098
Atomically thin platinum (Pt) shells on titanium tungsten carbide (TiWC) and titanium tungsten nitride (TiWN) core nanoparticles display substantially modified catalytic performance compared to com...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::809dfeff6e7dcb55635a1c3aa5762a02
https://doi.org/10.1021/acscatal.9b01272
https://doi.org/10.1021/acscatal.9b01272
Autor:
Kyoung Won Park, Alexie M. Kolpak
Publikováno v:
Journal of Materials Chemistry A. 7:16176-16189
Both metal and semiconductor nanoparticles can induce water splitting in response to light but in different ways: metal nanoparticles can generate hot carriers with a surface plasmon resonance (SPR) effect and semiconductor nanoparticles with optimal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74a2d7a2beb077f4af972b3060e3dbb1
https://doi.org/10.1039/c9ta04508b
https://doi.org/10.1039/c9ta04508b
Autor:
Alexie M. Kolpak, Kyoung Won Park
Publikováno v:
Journal of Materials Chemistry A. 7:6708-6719
Overall photocatalytic water splitting with a high efficiency of ∼5% has recently been observed for CoO nanoparticle suspensions in the absence of an applied bias or co-catalyst. Although experimental measurements indicate that the overall photocat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f590baf8864d25d82a74d04f18abb9d3
https://doi.org/10.1039/c8ta11087e
https://doi.org/10.1039/c8ta11087e