Cation substitution in β-tricalcium phosphate investigated using multi-nuclear, solid-state NMR

Cation substitution in β-tricalcium phosphate investigated using multi-nuclear, solid-state NMR
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使用多核固态 NMR 研究 β-磷酸三钙中的阳离子取代

DOI:
10.1016/j.jssc.2013.10.026
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发表时间:
2014
影响因子:
3.3
通讯作者:
D. Holland
D. Holland
中科院分区:
化学3区
文献类型:
--
作者:
A. T. Grigg;M. Mee;P. Mallinson;S. K. Fong;Z. Gan;R. Dupree;D. Holland

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铝、镓、钠离子对β-磷酸三钙的取代β-TCP;用1D ~(31)P,~(27)Al,~(71)Ga,~(23)Na和~(43)Ca的组合,成功地确定了Ca位2D ~(27)Al {31 P}、~(71)Ga {31 P}和~(23)Na {31 P}旋转共振再耦合多量子关联(R_3-HMQC)NMR。在所研究的组成范围内,Al 3+或Ga 3+仅在Ca(5)位上观察到Ca 2+的取代,而Na+的取代仅限于Ca(4)位。在Al ~(3+)和Ga ~(3+)掺杂的样品中,在最高掺杂浓度下观察到AlPO_4或GaPO_4第二相。
The substitution of aluminium, gallium and sodium cations intoβ-tricalcium phosphate (β-TCP; Ca3(PO4)2) has been investigated, and the Ca sites involved successfully determined, using a combination of 1D31P,27Al,71Ga,23Na and43Ca (natural abundance) NMR and 2D27Al{31P},71Ga{31P} and23Na{31P} rotary-resonance-recoupled heteronuclear multiple-quantum correlation (R3-HMQC) NMR. Over the compositional range studied, substitution of Ca2+by Al3+or Ga3+was observed only on the Ca(5) site, whilst substitution by Na+was confined to the Ca(4) site. Some AlPO4or GaPO4second phase was observed at the highest doping levels in the Al3+and Ga3+substituted samples.
中子粉末衍射法分析磷酸三钙Ca3(PO4)2的晶体结构
DOI: --
发表时间: 2003
期刊: Journal of Solid State Chemistry 175
影响因子: --
作者:
Yashima;M.
通讯作者: M.