scholarly journals Correlation between glaze-colors and structural properties of the HIZEN celadons produced in the Edo period of Japan, by means of X-ray diffraction (І)

Cerâmica ◽  
2011 ◽  
Vol 57 (341) ◽  
pp. 106-114 ◽  
Author(s):  
M. Hidaka ◽  
K. Ohashi ◽  
R. P. Wijesundera ◽  
L. S. R. Kumara ◽  
M. Watanabe ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Transition Metal ◽  
Fluorescence Analysis ◽  
Transition Metal Ions ◽  
X Ray Diffraction ◽  
Edo Period ◽  
X Ray ◽  
Basic Body ◽  
Natural Wood ◽  
X Ray Absorption

HIZEN celadons produced at Arita and Imari areas in Japan from 1630's to 1790's (Edo period) have been investigated by means of X-ray fluorescence analysis, and X-ray diffraction and X-ray absorption spectra using synchrotron radiation. It is found that, in the HIZEN celadons, the color brightness of the celadon glazes depends on the structural property of the raw basic ceramics taken at Imaizumi (Arita) and Ohkwachi (Imari), where the former is mainly Quartz-SiO2, and the later is Sanidine ((K,Na)Si3O8). It is confirmed that CaCO3 of natural wood ash added artificially into the raw celadon ceramics makes a glassy glaze on the surface of the basic body of the HIZEN celadons. Transition-metal ions (Cr, Cu, Zn) of very small amount are detected in the celadon glazes, in addition to Fe and Mn of small amount. It is considered that Cu and Cr are related to the color brightness of green-brown and blue-green in the HIZEN celadon glazes, respectively.

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.

Photocatalytic Activity of Zeolite Supported Transition Metal-(Co2+ and Cr2+) Doped ZnO: Comparative Study

2015 ◽  
Vol 827 ◽  
pp. 43-48
Author(s):  
Annisa Noorhidayati ◽  
Mia Putri Rahmawati ◽  
Nadia Febiana Djaja ◽  
Rosari Saleh
Keyword(s):  
Transition Metal ◽  
Zno Nanoparticles ◽  
Diffuse Reflectance Spectroscopy ◽  
Uv Light ◽  
Transition Metal Ions ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Doped Zno ◽  
Co Precipitation

Transition metal ions (Co and Cr) doped ZnO nanoparticles supported on natural zeolite were synthesized using co-precipitation method. The synthesized samples were characterized by means of X-ray diffraction, energy dispersive X-ray, Fourier-transform infrared absorption, and UV-visible diffuse reflectance spectroscopy. The samples were further used as photocatalyst for degradation of methyl orange and methylene blue in aqueous solutions under UV light irradiation. The results showed that zeolite supported Cr-doped ZnO nanoparticles is more efficient compared with zeolite supported Co-doped ZnO nanoparticles. It is also revealed that zeolite supported samples possessed higher photocatalytic efficiency compared to bare samples.

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.

Synchrotron Radiation X-Ray Fluorescence Analysis

1988 ◽  
Vol 32 ◽  
pp. 1-7
Author(s):  
John V. Gilfrich
Keyword(s):  
Synchrotron Radiation ◽  
Fluorescence Analysis ◽  
Excitation Source ◽  
X Ray Diffraction ◽  
X Ray ◽  
Analytical Capability ◽  
The World ◽  
Physical Principles ◽  
The Way

The physical principles giving rise to synchrotron radiation(SR), the facilities necessary to make use of this source of radiation and the way in which it can be used for x-ray diffraction experiments have been described in other parts of this proceedings. The use of synchrotron radiation as an excitation source for x-ray fluorescence takes advantage of many of its unique properties to provide the potential for an improved analytical capability, beyond that which can be realized with more conventional laboratory x-ray sources. Workers around the world are studying this application (as well as a wide variety of others) , to establish the potential of this technique. Table 1 lists some of the facilities where significant XRF effort is being expended. This list is not intended to be complete, but just to convey some idea of the magnitude of the research which is being carried out.

Synchrotron radiation in situ X-ray absorption fine structure and in situ X-ray diffraction analysis of a high-performance cobalt catalyst towards the oxygen reduction reaction

2017 ◽  
Vol 19 (45) ◽  
pp. 30749-30755
Author(s):  
Haiying Qin ◽  
Longxia Lin ◽  
Junkang Jia ◽  
Huangliang Ni ◽  
Yan He ◽  
...  
Keyword(s):  
Fine Structure ◽  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
High Performance ◽  
Cobalt Catalyst ◽  
Reduction Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption

The evolution of metallic Co to Co(OH)2 and then to CoOOH during the ORR was revealed by in situ XRD combined with in situ XAFS tests.

Transition metal cations on the move: simultaneous operando X-ray absorption spectroscopy and X-ray diffraction investigations during Li uptake and release of a NiFe2O4/CNT composite

2018 ◽  
Vol 20 (28) ◽  
pp. 19129-19141 ◽  
Author(s):  
Stefan Permien ◽  
Tobias Neumann ◽  
Sylvio Indris ◽  
Gero Neubüser ◽  
Lorenz Kienle ◽  
...  
Keyword(s):  
Transition Metal ◽  
Absorption Spectroscopy ◽  
Metal Cations ◽  
X Ray Diffraction ◽  
Transition Metal Cations ◽  
X Ray ◽  
X Ray Absorption ◽  
Uptake And Release

Transition metal cations on the move: simultaneous operando XAS and XRD investigations during Li uptake and release of a NiFe2O4/CNT composite.

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