New Topotactic Derivatives of the Open-Framework Semiconductor KBi3S5via a Low-Temperature Solid-State Ion-Exchange Route
New Topotactic Derivatives of the Open-Framework Semiconductor KBi3S5via a Low-Temperature Solid-State Ion-Exchange Route
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DOI：
10.1006/jssc.1998.7812
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发表时间：
1998-03
影响因子：
5.4
通讯作者：
K. Chondroudis;M. Kanatzidis
中科院分区：
文献类型：
--
作者：
K. Chondroudis;M. Kanatzidis
摘要采用一种新的低温固态离子交换法对KBi_3S_5进行了离子交换。新方法允许在110-130°C的非常低的温度范围内，K+离子与较小的阳离子Li+和Na+以及NH+4进行固-固离子交换。制备了拓扑离子交换系列AxK 1 − xBi 3S 5（A=Li、Na和NH 4），并通过粉末X射线衍射、差示扫描量热、差热分析、热重分析、半定量微探针分析、固态UV/维斯/near-IR光谱和变温固态7 Li NMR光谱进行了表征。
Abstract A new low-temperature solid-state ion-exchange route has been used to ion-exchange KBi3S5. The new method allows the solid–solid ion-exchange of the K+ions for the smaller cations Li+and Na+, as well as for the NH+4at the remarkably low temperature regime of 110–130°C. The topotactically ion-exchanged seriesAxK1−xBi3S5(A=Li, Na, and NH4) was prepared and characterized by powder X-ray diffraction, differential scanning calorimetry, differential thermal analysis, thermal gravimetric analysis, semiquantitative microprobe analyses, solid-state UV/vis/near-IR spectroscopy, and variable-temperature solid-state7Li NMR spectroscopy.