Results 51 to 60 of about 21,282 (312)

XANES study of Ti coordination in heat-treated (TiO2)(x)(SiO2)(1-x) xerogels

, 1999
Accurate measurements of the height and position of the preedge peak in Ti K-edge XANES (X-ray absorption near-edge structure) can distinguish 4-, 5-, and 6-fold coordination of Ti by O (Ti-[4], Ti-[5], and Ti-[6], respectively), and mixtures thereof ...
Anderson, Ruth, Newport, Robert J., Wallidge, Graham, Smith, Mark E., Mountjoy, Gavin, Pickup, David M., Cole, Jacqueline M.   +6 more
core   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Theoretical and experimental study of the niobium dioxide electronic structure

Конденсированные среды и межфазные границы
The investigation of the niobium dioxide electron-energy structure is presented in the paper. The electronic structure computer modeling of the NbO2 with a rutile crystal structure has been performed using linearized augmented plane wave method.
Maxim D. Manyakin, Sergey I. Kurganskii, Iuliia S. Kakuliia, Sofiia S. Titova, Olga A. Chuvenkova, Sergey Yu. Turishchev   +5 more
doaj   +1 more source

Cobalt XANES spectra.

, 2016
(A) Indicated Cbl solution samples, (B) CoFeSP-Cbl samples. Dotted lines mark edge half-height. Spectra of CoIII2O3 (solid black line) and CoIIO (dashed black line) are shown for comparison in (A) and (B).
Stefan Mebs (1455724), Michael Haumann (1455718), Sandra E. Hennig (3158502), Sebastian Goetzl (3158499), Peer Schrapers (1625575), Holger Dobbek (25368), Holger Dau (1625578)   +6 more
core   +1 more source

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

ChemGraph-XANES: An Agentic Framework for XANES Simulation and Analysis

Computational X-ray absorption near-edge structure (XANES) is widely used to probe local coordination environments, oxidation states, and electronic structure in chemically complex systems. However, the use of computational XANES at scale is constrained more by workflow complexity than by the underlying simulation method itself.
Grizzi, Vitor F., Pham, Thang Duc, Pretzie, Luke N., Xu, Jiayi, Keceli, Murat, Liu, Cong   +5 more
openaire   +2 more sources

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

The state of palladium and copper on the surface of freshly prepared low temperature carbon monoxide oxidadation catalyst PdCl₂-CuCl_2/γ-Al₂O₃

Тонкие химические технологии, 2010
The EXAFS/XANES, XRD, SEM methods were used for examination of freshly prepared low temperature carbon monoxide oxidation in air catalyst PdCl2-CuCl2/γ-Al2O3 active components states.
D. N. Titov, L. G. Bruk, I. V. Oshanina, O. N. Temkin, G. M. Kuz’micheva, Ya. V. Zubavichus, A. A. Veligzhanin, N. V. Sadovskaya   +7 more
doaj  

Co1/Ru Single‐Atom Alloy Catalyst for Sustainable Polypropylene Hydrogenolysis to Long‐Chain Liquid Products

Advanced Materials, EarlyView.
A titania‐supported Co1/Ru single‐atom alloy catalyst enables efficient polypropylene hydrogenolysis. Ru─Co─Ru motifs maintain Ru activity while suppressing excessive chain scission to gaseous products. Both virgin and waste plastics achieve high, environmentally and economically optimal C11+ liquid yields, supporting sustainable chemical recycling ...
Yuzhen Ge, Yimeng Jin, Alexandra Krestnikova, Sibei Zou, Antonio J. Martín, Gonzalo Guillén‐Gosálbez, Javier Pérez‐Ramírez   +6 more
wiley   +1 more source

Superiority of K-edge XANES over LIII-edge XANES in the Speciation of Iodine in Natural Soils

Analytical Sciences, 2008
Environmental behavior of iodine is of great importance especially related to the release of radioiodine from the processing of nuclear fuel, nuclear accidents, etc. To understand the fate of radioactive iodine in soil-water systems, it is necessary to establish a speciation method of iodine in soil. XANES is one of the most important candidates and we
SHIMAMOTO, Yoko S., TAKAHASHI, Yoshio
openaire   +3 more sources