scholarly journals Reduction and cluster growth of palladium in zeolite Y containing transition metal ions. X-ray absorption studies

1990 ◽  
Vol 94 (2) ◽  
pp. 845-853 ◽  
Author(s):  
Karin. Moller ◽  
Thomas. Bein
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Zeolite Y ◽  
Transition Metal Ions ◽  
Cluster Growth ◽  
X Ray ◽  
Absorption Studies ◽  
X Ray Absorption

scholarly journals 1s2p RIXS Calculations for 3d Transition Metal Ions in Octahedral Symmetry

2018 ◽  
Vol 2018 ◽  
pp. 1-50 ◽  
Author(s):  
Patric Zimmermann ◽  
Myrtille O. J. Y. Hunault ◽  
Frank M. F. de Groot
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Crystal Field ◽  
Transition Metal Ions ◽  
Octahedral Symmetry ◽  
Final State ◽  
X Ray ◽  
X Ray Scattering ◽  
Starting Point ◽  
X Ray Absorption

We present a series of 1s2p resonant inelastic X-ray scattering (RIXS) calculations for 3d transition metal ions in octahedral symmetry covering each ground state between 3d0 and 3d9. The calculations are performed in octahedral (Oh) symmetry using the crystal field multiplet theory. We discuss the crystal field effects and the selection rules with respect to the 1s2p RIXS pre-edge and compare their final state energies with the corresponding 2p X-ray absorption spectrum (XAS). The calculations provide a detailed understanding of 1s2p RIXS and serve as a basis for the future analysis of experimental spectra and also as a starting point for calculations that add additional channels including the nonlocal peaks.

Characterization on the Microstructures and Optical Performances of TiO2 Doped with Transition Metals

2014 ◽  
Vol 887-888 ◽  
pp. 388-394 ◽  
Author(s):  
Xin Hua Liu ◽  
Yi Deng ◽  
Yu Chuan Zhang ◽  
Yin Hang Zhou
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Photoelectron Spectroscopy ◽  
Transition Metal Ions ◽  
Ultraviolet Region ◽  
Visible Light Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Light Region ◽  
Cu Ions

The structures and optical performances of TiO2doped with 4thperiodic transition metal ions were investigated in this paper. The characterization results of X-ray photoelectron spectroscopy and X-ray diffraction showed that the transition metal ions existed in oxidative states, and composites formed because of the reaction between doped metal ions and TiO2. The absorption spectroscopy of TiO2doped with zinc was mainly in ultraviolet region, close to that of the pure TiO2. While for TiO2doped with other transition metal ions including V, Cr, Mn, Fe, Co, Ni and Cu ions, the absorption spectroscopies covered ultraviolet region and visible light region, much broader than that of the pure TiO2.

scholarly journals The migration mechanism of transition metal ions in LiNi0.5Mn1.5O4

2015 ◽  
Vol 3 (24) ◽  
pp. 13031-13038 ◽  
Author(s):  
Gui-Liang Xu ◽  
Yan Qin ◽  
Yang Ren ◽  
Lu Cai ◽  
Ke An ◽  
...  
Keyword(s):  
Transition Metal ◽  
Neutron Diffraction ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Migration Mechanism

In situ high-energy X-ray diffraction and neutron diffraction were deployed to trace the migration of transition metal ions in LiNi0.5Mn1.5O4.

Synthesis, X-ray characterization, DFT calculations and Hirshfeld surface analysis of thiosemicarbazone complexes of Mn+ ions (n = 2, 3; M = Ni, Cd, Mn, Co and Cu)

CrystEngComm ◽  
2016 ◽  
Vol 18 (6) ◽  
pp. 1009-1023 ◽  
Author(s):  
Ghodrat Mahmoudi ◽  
Alfonso Castiñeiras ◽  
Piotr Garczarek ◽  
Antonio Bauzá ◽  
Arnold L. Rheingold ◽  
...  
Keyword(s):  
Transition Metal ◽  
Dft Calculations ◽  
Metal Ions ◽  
Surface Analysis ◽  
Transition Metal Ions ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
X Ray ◽  
Thiosemicarbazone Complexes

Herein we report the synthesis, X-ray characterization, DFT calculations and Hirshfeld surface analysis of seven complexes of transition metal ions with pyridine-based thiosemicarbazone ligands.

The interaction of transition and post-transition metal ions with 14- and 16-membered trans N2X2-donor macrocycles (X = NH, O, S): stabilities and X-ray structures

1996 ◽  
Vol 246 (1-2) ◽  
pp. 371-377 ◽  
Author(s):  
Anthony J. Leong ◽  
Leonard F. Lindoy ◽  
David C.R. Hockless ◽  
Gerhard F. Swiegers ◽  
S.Bruce Wild
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
X Ray

scholarly journals Electrochemical Sensitive Detection of Hydrazine Through Cobalt Doped Cerium Oxide Nanostructured Platform

2021 ◽  
Author(s):  
Anees AHMAD Ansari ◽  
Manawwer Alam
Keyword(s):  
Cyclic Voltammetry ◽  
Impedance Spectroscopy ◽  
Transition Metal ◽  
Metal Ions ◽  
Cerium Oxide ◽  
Catalytic Properties ◽  
Transition Metal Ions ◽  
Oxygen Storage ◽  
Current Response ◽  
X Ray

Abstract Chemically synthesized cobalt-doped cerium oxide nanoparticles(CeO2:Co;NPs) were successfully prepared by complexed based co-precipitation process. The structural, morphological, chemical composition, optical properties, and electro-catalytic properties were determined by X-ray diffraction pattern(XRD), transmission electron microscopy(TEM), energy dispersive x-ray analysis (EDX), UV/Visible absorption spectroscopy, and cyclic voltammetry techniques. Owing to the wide-spread applications of CeO2 NPs in various fields of applied material sciences, transition metal ions doped CeO2:Co NPs exhibited excellent electro-catalytic properties. Outstanding physiochemical properties of CeO2 such as reversible oxidation states, high ionic mobility, large oxygen storage ability, effective large specific surface area, and the excellent current response observed in the electrocatalytic oxidation of hydrazine. The presence of transition metal ions (cobalt) improves the oxidation potential of hydrazine. Cyclic voltammetry was analog with the electrochemical impedance spectroscopy results, which revealed the enhanced with rapid sensing response against hydrazine. The electro-catalytic results of the CeO2:Co NPs electrode exhibited excellent voltammetry and impedance spectroscopy performance towards the hydrazine oxidation. The fabricated chemical sensor shows a wide linear detection range from 7.18 to 1000 µM, a low detection limit 7.2 µM, and sensitivity of 2.42 µAmLµM-1cm-2. The fabricated sensing electrode demonstrated long-term steadiness resulting it shows high sensitivity, selectivity, repeatability/reproducibility, and rapid detection of hydrazine.

Sign in / Sign up

Export Citation Format

Share Document