Local structure analysis on (La,Ba)(Ga,Mg)O3−δ by the pair distribution function method using a neutron source and density functional theory calculations

2013 ◽  
Vol 163 ◽  
pp. 46-49 ◽  
Author(s):  
Naoto Kitamura ◽  
Sven C. Vogel ◽  
Yasushi Idemoto
Keyword(s):  
Density Functional Theory ◽  
Distribution Function ◽  
Structure Analysis ◽  
Neutron Source ◽  
Local Structure ◽  
Pair Distribution Function ◽  
Density Functional ◽  
Function Method ◽  
Density Functional Theory Calculations ◽  
Functional Theory

Density Functional Theory Calculations of Arsenic(III) Structures on Perfect TiO2 Anatase (1 0 1) Surface

2011 ◽  
Vol 233-235 ◽  
pp. 491-494 ◽  
Author(s):  
Lin Yu ◽  
Yue Liu ◽  
Zhi Gang Wei ◽  
Gui Qiang Diao ◽  
Ming Sun ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Adsorption Energy ◽  
Density Functional ◽  
Function Method ◽  
Photocatalytic Oxidation ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Low Concentrations ◽  
The Density Functional Theory ◽  
The World

There are many areas in the world where the ground water has been contaminated by arsenic. One process to purify the water is to use TiO2 to adsorb the arsenic. As the TiO2 surface can be cleaned and reused, it has a promising potential as a water purifier. In this paper, the plane-wave function method, based on the density functional theory, has been used to calculate the structures of arsenic(III) on a perfect TiO2 anatase (1 0 1) surface. All the arsenic(III) solution species such as H3AsO3, H2AsO3-1, HAsO3-2 and AsO3-3 are put onto the surface with many different possible structures to obtain the adsorption energy. Based on the adsorption energy, the bidentate binuclear (BB) adsorption configurations of arsenic(III) on the surface are more favorable at low concentrations, whereas BB form and monodentate mononuclear (MM) form may coexist at higher concentrations. The models and results fit well with published experimental results. The results and conclusions will be of benefit to further research on arsenite adsorption and its photocatalytic oxidation on a TiO2 surface.

Density Functional Theory Calculations of Arsenic(V) Structures on Perfect TiO2 Anatase (1 0 1) Surface

2011 ◽  
Vol 233-235 ◽  
pp. 495-498 ◽  
Author(s):  
Zhi Gang Wei ◽  
Yan Di Zou ◽  
Hai Xia Zeng ◽  
Xue Chun Zhong ◽  
Zhen Jun Cheng ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Adsorption Energy ◽  
Density Functional ◽  
Function Method ◽  
Photocatalytic Oxidation ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Low Concentrations ◽  
The Density Functional Theory ◽  
The World

There are many areas in the world where the ground water has been contaminated by arsenic. One process to purify the water is to use TiO2 to adsorb the arsenic. As the TiO2 surface can be cleaned and reused, it has a promising potential as a water purifier. In this paper, the plane-wave function method, based on the density functional theory, has been used to calculate the structures of arsenic(III) on a perfect TiO2 anatase (1 0 1) surface. All the arsenic(III) solution species such as H3AsO3, H2AsO3-1, HAsO3-2 and AsO3-3 are put onto the surface with many different possible structures to obtain the adsorption energy. Based on the adsorption energy, the bidentate binuclear (BB) adsorption configurations of arsenic(III) on the surface are more favorable at low concentrations, whereas BB form and monodentate mononuclear (MM) form may coexist at higher concentrations. The models and results fit well with published experimental results. The results and conclusions will be of benefit to further research on arsenite adsorption and its photocatalytic oxidation on a TiO2 surface.

Local Atomic Ordering in BaTaO2N Studied by Neutron Pair Distribution Function Analysis and Density Functional Theory.

ChemInform ◽  
2007 ◽  
Vol 38 (42) ◽  
Author(s):  
Katharine Page ◽  
Matthew W. Stoltzfus ◽  
Young-Il Kim ◽  
Thomas Proffen ◽  
Patrick M. Woodward ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Distribution Function ◽  
Pair Distribution Function ◽  
Density Functional ◽  
Function Analysis ◽  
Atomic Ordering ◽  
Functional Theory ◽  
Neutron Pair

Local Atomic Ordering in BaTaO2N Studied by Neutron Pair Distribution Function Analysis and Density Functional Theory

2007 ◽  
Vol 19 (16) ◽  
pp. 4037-4042 ◽  
Author(s):  
Katharine Page ◽  
Matthew W. Stoltzfus ◽  
Young-Il Kim ◽  
Thomas Proffen ◽  
Patrick M. Woodward ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Distribution Function ◽  
Pair Distribution Function ◽  
Density Functional ◽  
Function Analysis ◽  
Atomic Ordering ◽  
Functional Theory ◽  
Neutron Pair

scholarly journals A Local Structure Analysis of Molten Li2CO3 Using the Density Functional Theory

2007 ◽  
Vol 75 (6) ◽  
pp. 466-471
Author(s):  
Hidetoshi MORITA ◽  
Hideaki OHATA ◽  
Ken TAKEUCHI ◽  
Koichi UI ◽  
Kozo KOZAWA ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Structure Analysis ◽  
Local Structure ◽  
Density Functional ◽  
Functional Theory ◽  
The Density Functional Theory
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