Adsorbate-Induced Partial Ordering of the Irregular Surface and Subsurface of Crystalline Ice
Adsorbate-Induced Partial Ordering of the Irregular Surface and Subsurface of Crystalline Ice
复制标题
吸附物诱导的晶冰不规则表面和次表面的部分有序化
DOI：
10.1021/jp960497s
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
V. Buch
中科院分区：
文献类型：
--
作者：
L. Delzeit;M. Devlin;A. Rowland;J. Devlin;V. Buch
在我们最近的研究中，有证据表明，一个松弛的冰丘表面是无序的，与冰丘内部相反。在这项研究中，有人认为，光谱证据的基础上，无序延伸到几个表面层。大，小D2O纳米晶体之间的差异光谱被用来获得无序次表面层的红外OD拉伸吸收。此外，它示出，某些选择吸附在冰面诱导冰次表面的显着订购所示的三分之一或更多的次表面光谱的内部冰的转换。对于冰纳米晶体，新的“内部”冰可以大于冰总量的10%。由于冰表面下显然是由大约三个双层，这表明，这些吸附物的表面双层的影响是反映在一个或多个表面下双层的“排序”。具有这种影响的吸附物的例子是双官能摩尔。
In our recent studies, evidence was presented that a relaxed ice nanocrystal surface is disordered, in contrast to the nanocrystal interior. In this study it is argued, based on spectroscopic evidence, that disorder extends to several surface layers. Difference spectra between large and small D2O nanocrystals are used to obtain the infrared OD stretch absorption of the disordered subsurface layers. Moreover it is shown that certain select adsorbates at the ice surface induce a significant ordering of the ice subsurface as indicated by the conversion of one-third or more of the subsurface spectrum to that of interior ice. For ice nanocrystals, the new “interior” ice can be greater than 10% of the total amount of ice. Since the ice subsurface apparently consists of approximately three bilayers, this suggests that the influence of these adsorbates on the surface bilayer is reflected in the “ordering” of one or more subsurface bilayers. Examples of adsorbates that have this influence are the bifunctional mole...