作者:Geoff Henshaw、Ivan P. Parkin、Graham A. Shaw
DOI:10.1039/a605665b
日期:——
Reaction of sulfur, selenium or tellurium with elemental metals in
liquid ammonia at room temperature in a pressure vessel produced metal
chalcogenides ME (M = Ca, Sr, Ba, Eu, Yb, Ni, Zn, Cd, Hg,
Sn or Pb; E = S, Se or Te), Ag
2
E, solid
solutions of mixed-metal chalcogenides
M
x
M′
y
E
z
(x + y = 1,
z = 1 or 2), and metal-mixed chalcogenides
MS
x
Se
y
. Products showed a range
of crystallite sizes from 700 Å for PbSe and Ag
2
S to
essentially amorphous (ZnS). Heating at 250–300 °C
under vacuum for 2 h induced crystallinity in the amorphous powders. The
pre- and post-heated metal chalcogenides were analysed by X-ray powder
diffraction, Fourier-transform IR, Raman microscopy, scanning electron
microscopy-energy dispersive analysis of X-rays, electron microprobe,
X-ray photoelectron spectroscopy, elemental analysis and magnetic
susceptibility studies.
在常温下,将硫、硒或碲与元素金属在液态氨中于高压釜内反应,生成了金属硫族化合物ME(M = Ca, Sr, Ba, Eu, Yb, Ni, Zn, Cd, Hg, Sn 或 Pb; E = S, Se 或 Te),Ag2E,固溶体混合金属硫族化合物MxM'yEz(x + y = 1, z = 1 或 2),以及金属混合硫族化合物MSxSey。产物表现出从700 Å的PbSe和Ag2S到基本上非晶态(ZnS)的一系列晶粒尺寸。在真空下加热至250–300 °C保持2小时,诱导了非晶粉末的结晶性。经加热前后的金属硫族化合物通过X射线粉末衍射、傅里叶变换红外、拉曼显微镜、扫描电子显微镜-能量色散X射线分析、电子探针、X射线光电子能谱、元素分析和磁化率研究进行了分析。