Results 131 to 140 of about 21,282 (312)

X-ray absorption near-edge structure (XANES) spectroscopy

, 2014
The previous Reviews in Mineralogy volume on spectroscopic methods (Vol. 18 Spectroscopic Methods in Mineralogy and Geology, Frank C. Hawthorne, ed. 1988), contained a single chapter on X-ray absorption spectroscopy which reviewed aspects of both EXAFS ...
Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis, Grant S. Henderson, De Groot, Frank M F, Benjamin J.A. Moulton, Henderson, Grant S., Frank M.F. de Groot, Moulton, Benjamin J A   +7 more
core   +1 more source

Lewis‐Acid Engineering with Neodymium Promoters as Synergistic Nd‐Ni Dual Sites for Enhanced Urea Oxidation

Advanced Science, EarlyView.
The integration of rare‐metal neodymium centers to engineer Lewis acid sites with nickel centers is proposed as highly efficient UOR catalysts. ABSTRACT The sluggish kinetics of the urea oxidation reaction (UOR) are strongly associated with the high energy barriers required for the C‐N cleavage and N‐N coupling steps.
Mingfan Li, Jun Mei, Jiahao Zhao, Ruipeng Guo, Jing Shang, Ziyou Dong, Juan Bai, Qianqian Yao, Shixue Dou   +8 more
wiley   +1 more source

Exact solution of a variety of X-ray probes in the Falicov-Kimball model with dynamical mean-field theory

Condensed Matter Physics, 2012
We examine the core-level X-ray photoemission spectroscopy (XPS), X-ray absorption near-edge spectroscopy (XANES) and X-ray emission spectroscopy (XES) in the Falicov-Kimball model by using the exact solution from dynamical mean-field theory.
A.M. Shvaika, J.K. Freericks
doaj   +1 more source

EXAFS and XANES of superoxide dismutase: a copper protein

, 1986
EXAFS and XANES have provided unique and specific structural information for a number of copper proteins. Some of this work has recently been reviewed [1].
Alagna L, Hasnain SS, L. ALAGNA, Strange RW, S.S. HASNAIN, R.W. STRANGE, Blackburn NJ, N. J. BLACKBURN   +7 more
core   +1 more source

Oxygen Vacancy‐Enriched Platinum Single‐Atom Nanozyme Wrapped in Nanoislands: Unlocking Catalytic Activity and Reprogramming Redox Microenvironment for Osteonecrosis Repair

Advanced Science, EarlyView.
CeO2‐x/Pt single‐atom nano‐island is constructed via low‐temperature reduction, featuring abundant oxygen vacancies and an island–sea structure. It delivers outstanding multi‐enzyme‐mimetic activity and ROS‐scavenging efficiency. Density functional theory reveals optimized electronic structures and reaction pathways.
Yang Zhu, Zehui Lv, Xuejie Cai, Penghui Wei, Dengliang Wang, Zhao Wang, Ruoying Wang, Yingjie Wang, Xingdong Yang, Yixin Bian, Jiawei Xu, Xisheng Weng, Liangfeng Wei   +12 more
wiley   +1 more source

Applications of XANES to surface science.

Hyomen Kagaku, 1986
In this review, the current theoretical methods for the interpretation of XANES are discussed, and some applications of XANES to surface science are illustrated. For theoretical problems, we discuss the cluster size to be included in the calculations, polarization dependence, multiple scatterings and many-body effects.
openaire   +2 more sources

XANES-Based Determination of Redox Potentials Imposed by Steel Corrosion Products in Cement-Based Media

, 2018
The redox potential (Eh) in a cementitious nuclear waste repository is critical to the retardation behavior of redox-sensitive radionuclides (RNs), and largely controlled by embedded steel corrosion but hard to be determined experimentally.
Alejandro Fernandez-Martinez (1777495), Thierry G.G. Maffeis (5798429), Delphine Tisserand (3967115), Laurent Charlet (41111), Aled R. Lewis (5082518), Bin Ma (219839), Nathaniel Findling (1406863), Benoît Madé (4369621), Eduardo Salas-Colera (3592967), Ekaterina Markelova (1646872), Sarah Bureau (3967118)   +10 more
core   +1 more source

Tailored D‐π Conjugation Boosts Piezocatalytic CO2 Reduction in a Platinum(II)‐Acetylide Framework

Advanced Science, EarlyView.
The highly conjugated metalII‐acetylide framework demonstrates efficient ultrasound‐driven conversion of CO2 to CO. The piezoelectric field generated by ultrasound facilitates electron transfer from the tetraphenylene π‐column to the MII‐bis(acetylide) moiety, enabling CO2 activation. Compared to PdII‐ and NiII‐based analogues, the stronger d–π orbital
Mude Zhu, Yingtang Zhou, Kai Wang, Xiaoyun Fan, Yang Ding, Wai‐Yeung Wong, Linli Xu   +6 more
wiley   +1 more source

Combinatorial characterization of metastable luminous silver cations

Scientific Reports
Thermodynamically metastable glasses that can contain metastable species are important functional materials. X-ray absorption near-edge structure (XANES) spectroscopy is an effective technique for determining the valence states of cations, especially for
Hirokazu Masai, Masanori Koshimizu, Hiroki Kawamoto, Hiroyuki Setoyama, Yohei Onodera, Kazutaka Ikeda, Shingo Maruyama, Naoki Haruta, Tohru Sato, Yuji Matsumoto, Chika Takahashi, Teruyasu Mizoguchi   +11 more
doaj   +1 more source

Silicon L2,3-edge XANES study of platinum silicide thin films

, 1996
Platinum silicide films, with a typical thickness of several hundred \uc5, prepared on n-type Si(100) wafers by UHV mnagnetron sputter deposition followed by rapid thermal annealing, have been studied by Si L2,3-edge X-ray absorption near edge structure (
D.-X. Xu, S. R. Das, Naftel, S. J., Sham, T. K., Xu, D.-X., S. J. Naftel, Das, S. R., T. K. Sham   +7 more
core   +1 more source