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Synthesis, Cu incorporation, and deposition behavior of apatite-type LaxCa10−x(PO4)6−x(SiO4)xCuyOz
Cu-containing, apatite-type phosphate–silicate solid solutions, La x Ca 10− x (PO 4 ) 6− x (SiO 4 ) x Cu y O z ( x = 3, 5, and 6), were synthesized by an impregnating method into the channels of apatite-type lattice by heat treatment after Cu loading. The unit cell volume of the apatite increased w...
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| Published in: | Journal of materials science 2016, Vol.51 (13), p.6509-6516 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites |
| Online Access: | Get full text |
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| Summary: | Cu-containing, apatite-type phosphate–silicate solid solutions, La
x
Ca
10−
x
(PO
4
)
6−
x
(SiO
4
)
x
Cu
y
O
z
(
x
= 3, 5, and 6), were synthesized by an impregnating method into the channels of apatite-type lattice by heat treatment after Cu loading. The unit cell volume of the apatite increased with increasing amount of Cu,
y
= 0–0.6 for
x
= 3 and 6, indicating successful incorporation of Cu into the channels of the apatite lattice. The result of Rietveld analysis of a La
5
Ca
5
(PO
4
)(SiO
4
)
5
Cu
y
O
z
(
x
= 5) sample indicated that the distribution of La
3+
and Ca
2+
cations in both 4f and 6 h sites were maintained during Cu incorporation. X-ray photoelectron spectroscopy and thermogravimetric analyses revealed that oxidation and reduction of Cu species occurred during heating up to 1100 °C and cooling in air, respectively. In addition, high-temperature X-ray diffraction analysis of the La
3
Ca
7
(PO
4
)
3
(SiO
4
)
3
Cu
0.6
O
z
(
x
= 3) sample in the temperature range from 500 to 1100 °C revealed that reversible incorporation/deposition of Cu occurred, accompanied by Cu oxidation/reduction. |
|---|---|
| ISSN: | 0022-2461 1573-4803 |
| DOI: | 10.1007/s10853-016-9960-1 |