Raman and IR spectra of Cax+1.5(6-x)(HPO4)x(PO4)6-x calcium phosphates with different PO4 3-/HPO4 2- molar ratios

1999 ◽  
pp. 603-604 ◽  
Author(s):  
Alessandro Bertoluzza ◽  
Giorgio Bottura ◽  
Paola Taddei ◽  
Anna Tinti
Keyword(s):  
Ir Spectra ◽  
Calcium Phosphates ◽  
Molar Ratios ◽  
Raman And Ir Spectra

Correlation Between Structure and Phonon Spectra of Linear Polyiodide Chains in Tl6I6M2/nn+(I4)2-, [M = Pb, Ag, Au, (Bi0.5 Tl0. 5)]

1980 ◽  
Vol 35 (4) ◽  
pp. 389-402
Author(s):  
H. J. Stolz ◽  
G. Trageser
Keyword(s):  
Ir Spectra ◽  
Phonon Spectra ◽  
Raman And Ir Spectra

Abstract Raman-and IR-spectra of four compounds of the general composition Tl6I6M2/n n+(I4) [n: formal valence of the M-atom, M = Ag, Au, Pb and (Bi0.5Tl0.5)] were investigated in order to identify the polyiodide species present. In accordance with structural results comparable amounts of I42-and I3-/I--groups were found for M = Ag, Pb and (Bi0.5Tl0.5), while in Tl6I6Au2(I4) I3-/I--groups predominate.

Effect of Synthesis Temperature and Ca/P Ratios on Specific Surface Area of Amorphous Calcium Phosphate

2016 ◽  
Vol 721 ◽  
pp. 172-176 ◽  
Author(s):  
Jana Vecstaudza ◽  
Janis Locs
Keyword(s):  
Calcium Phosphate ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Amorphous Calcium Phosphate ◽  
Calcium Phosphates ◽  
Synthesis Temperature ◽  
Molar Ratios ◽  
Different Temperatures ◽  
Low Crystalline

Amorphous and low crystalline calcium phosphates are prospective candidates for bone implant manufacturing. Amorphous calcium phosphate (ACP) preparation technologies could be improved in terms of specific surface area (SSA) of obtained products. Current study is dedicated to the effect of synthesis temperature and Ca and P molar ratios (Ca/P) on SSA of ACP. Higher SSA can improve bioactivity of biomaterials. ACP was characterized by XRD, FT-IR, SEM and BET N2 adsorption techniques. Spherical nanoparticles (<45 nm in size) were obtained independently of initial Ca/P ratio and synthesis temperature. For the first time comparison of SSA was shown for ACP obtained at different temperatures (0 °C and 20 °C) and Ca/P molar ratios (1.5, 1.67 and 2.2).

Raman and IR spectra of cellulosic and synthetic hollow fiber membranes for hemodialysis

1999 ◽  
pp. 601-602
Author(s):  
Alessandro Bertoluzza ◽  
Concezio Fagnano ◽  
Mauro Rossi ◽  
Paola Taddei ◽  
Anna Tinti
Keyword(s):  
Ir Spectra ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Raman And Ir Spectra

Bioactivity tests of calcium phosphates with variant molar ratios of main components

2018 ◽  
Vol 106 (7) ◽  
pp. 1941-1950 ◽  
Author(s):  
Klaudia Pluta ◽  
Agnieszka Sobczak-Kupiec ◽  
Olga Półtorak ◽  
Dagmara Malina ◽  
Bożena Tyliszczak
Keyword(s):  
Calcium Phosphates ◽  
Molar Ratios ◽  
Main Components

Raman and IR spectra and DFT calculations of potassium antimonyl silicate

2019 ◽  
Vol 1193 ◽  
pp. 477-481 ◽  
Author(s):  
I.A. Balakhnina ◽  
N.N. Brandt ◽  
A. Yu Chikishev ◽  
M.E. Darvin ◽  
A.V. Kargovsky ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Ir Spectra ◽  
Raman And Ir Spectra

Quantum-mechanical ab initio simulation of the Raman and IR spectra of Mn3Al2Si3O12 spessartine

2009 ◽  
Vol 36 (7) ◽  
pp. 415-420 ◽  
Author(s):  
Loredana Valenzano ◽  
Alessio Meyer ◽  
Raffaella Demichelis ◽  
Bartolomeo Civalleri ◽  
Roberto Dovesi
Keyword(s):  
Ir Spectra ◽  
Ab Initio ◽  
Quantum Mechanical ◽  
Ab Initio Simulation ◽  
Raman And Ir Spectra

Raman and IR spectra of tetrachloro phosphonium salts of some tetrachlorate (MCI4−) anions

1981 ◽  
Vol 11 (3) ◽  
pp. 215-220 ◽  
Author(s):  
Jacob Shamir ◽  
Benjamin J. van der Veken ◽  
Medard A. Herman ◽  
Rafael Rafaeloff
Keyword(s):  
Ir Spectra ◽  
Phosphonium Salts ◽  
Raman And Ir Spectra
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