Results 71 to 80 of about 10,008 (214)

Electronic and magnetic structure of Fe/Co-doped multiwalled carbon nanotubes using X-ray absorption and magnetic circular dichroism spectroscopy

AIP Advances
Multi-walled carbon nanotubes (MWCNTs), synthesized using the microwave plasma-enhanced chemical vapor deposition (MPCVD) technique, have been examined to elucidate their electronic and magnetic structures through near-edge X-ray absorption fine ...
Sanjeev Gautam, Priyal Singhal, Pardeep K. Thakur, Saji Augustine, Navdeep Goyal, N. B. Brookes, Jae-Young Kim, Keun Hwa Chae   +7 more
doaj   +1 more source

Single Cu Atom Sites on Co3O4 Activate Interfacial Oxygen for Enhanced Reactivity and Selective Gas Sensing at Low Temperature

Small, EarlyView.
Atomically dispersed Cu sites on Co3O4 nanoparticles establish well‐defined Cu–O–Co interfacial linkages that promote lattice oxygen activation at markedly reduced temperatures. This structural and electronic modulation yields over twenty‐fold higher low‐temperature formaldehyde sensing responses than CuO nanoparticle analogues, enabling selective and ...
Hamin Shin, Matteo D'Andria, Meng Yin, Jaehyun Ko, Ken Suzuki, Dong‐Ha Kim, Frank Krumeich, Andreas T. Güntner   +7 more
wiley   +1 more source

Fe-resonant valence band photoemission and oxygen NEXAFS study on La1-xSrxFe0.75Ni0.25O3-{\delta}

, 2010
Iron resonant valance band photoemission spectra of Sr substituted LaFe0.75Ni0.25 O3-{\delta} have been recorded across the Fe 2p - 3d absorption threshold to obtain Fe specific spectral information on the 3d projected partial density of states ...
Aksoy, Funda, Braun, Artur, Erat, Selma, Gauckler, Ludwig J., Graule, Thomas, Liu, Zhi, Wadati, Hiroki   +6 more
core   +1 more source

Identifying the Azobenzene/Aniline reaction intermediate on TiO2-(110) : a DFT Study [PDF]

, 2013
Density functional theory (DFT) calculations, both with and without dispersion corrections, have been performed to investigate the nature of the common surface reaction intermediate that has been shown to exist on TiO2(110) as a result of exposure to ...
Abrahams S. C., Clark S. J., Corma A., D. P. Woodruff, Gao S.-P., Grirrane A., Haruta M., J. Robinson, Kowalski P. M., Kreikemeyer-Lorenzo D., Li S.-C., Li S.-C., M. K. Bradley, McNellis E. R., Naumkin A. V., Ortmann F., Palmer M. H., Pasquarello A., Pehlke E., Perdew J. P., Prates Ramalho J. P., Prates Ramalho J. P., Prates Ramalho J. P., Woodruff D. P., Woodruff D. P., Yin X.-L.   +25 more
core   +1 more source

Controlled Triazine‐Based Covalent Functionalization of Black Phosphorus for Degradable Hybrid Materials

Small, EarlyView.
A scalable triazine‐based covalent functionalization strategy of black phosphorus nanosheets provides controlled P‐N surface chemistry with enhanced grafting density in the presence of a phase‐transfer catalyst. As a representative example, BP‐sulfated polymer conjugates exhibit strong in vitro antiviral activity against enveloped viruses and ...
Jasmin Er, Sreejita Ray, Enyu Xie, Robert Schusterbauer, Maik Rosentreter, Ranen Etouki, Na Xing, Anja Wiesner, Philip Nickl, Rameez Ahmed, Taylor Page, Ana Hočevar, Obida Bawadkji, Andreas Herrmann, Jörg Radnik, Vasile‐Dan Hodoroaba, Christian Sieben, Beate Paulus, Ievgen S. Donskyi   +18 more
wiley   +1 more source

Polysaccharides, Proteins, and Phytoplankton Fragments: Four Chemically Distinct Types of Marine Primary Organic Aerosol Classified by Single Particle Spectromicroscopy

Advances in Meteorology, 2010
Carbon-containing aerosol particles collected in the Arctic and southeastern Pacific marine boundary layers show distinct chemical signatures of proteins, calcareous phytoplankton, and two types of polysaccharides in Near-Edge Absorption X-ray Fine ...
Lelia N. Hawkins, Lynn M. Russell
doaj   +1 more source

Thermosensitive Cu2O-PNIPAM core-shell nanoreactors with tunable photocatalytic activity [PDF]

, 2016
We report a facile and novel method for the fabrication of Cu2O@PNIPAM core-shell nanoreactors using Cu2O nanocubes as the core. The PNIPAM shell not only effectively protects the Cu2O nanocubes from oxidation, but also improves the colloidal stability ...
Angioletti-Uberti, Stefano, Ballauff, Matthias, Dzubiella, Joachim, Henzler, Katja, Jia, He, Kochovski, Zdravko, Lin, Xianzhong, Lu, Yan, Möser, Jannik, Ott, Andreas, Roa, Rafael, Schnegg, Alexander   +11 more
core   +3 more sources

Automated Identification of Thermal Transitions in Conjugated Material Thin Films Using In Situ Optical Spectroscopy

Small Methods, EarlyView.
This study demonstrates the effectiveness of in situ UV−vis coupled with automated data analysis, namely, ATLAS, for fast and reliable identification of multiple thermal transition in conjugated polymer thin films. This ATLAS method will significantly accelerate the understanding of the phase behavior of D‐A polymers with important implications for ...
Doan Vu, Martyn Jevric, Alireza Samadani, Mats R. Andersson, Christopher R. McNeill, Brendan T. O'Connor, Harald Ade   +6 more
wiley   +1 more source

NEXAFS investigation of the condensed silane structure(SiH4凝聚态结构的近边X射线吸收精细结构研究)

Zhejiang Daxue xuebao. Lixue ban, 2001
用多重散射团簇方法对低温下凝聚态SiH4进行了Si的1 s NEXAFS理论研究，对不同的模型研究表明，此时凝聚相SiH4形成链状结构.
HEJiang-ping(何江平), TANGJing-chang(唐景昌)   +1 more
doaj   +1 more source

Magnetic susceptibility, EPR, NEXAFS and XPS spectra of Fe-doped CaBi2Nb2O9

Journal of Materials Research and Technology, 2020
In order to study the electronic state of Fe atoms and interatomic exchange interactions in solid solutions of Bi2CaNb2−2xFe2xO9−δ with perovskite structure, methods of magnetic dilution, NEXAFS, XPS and EPR spectroscopy were used.
N.A. Zhuk, V.P. Lutoev, B.A. Makeev, S.V. Nekipelov, A.V. Koroleva, A.V. Fedorova, M.V. Yermolina, D.S. Beznosikov, L.O. Karlova   +8 more
doaj   +1 more source