论文部分内容阅读
将特殊的ＯＲＣ方法、薄层溶液技术和差谱方法相结合，在较宽的电位区间（－０．７～－２．０Ｖ），获得了不含任何（类）卤素离子的ＮａＣｌＯ４／Ａｇ体系中水的ＳＥＲＳ谱。结果表明，不同浓度的ＮａＣｌＯ４体系中，尽管体相水的结构有很大差别，但电极表面的吸附水有相似的结构特征，即由于电场作用而使有序性较高；并且随电极电位由极负电位向零电荷电位（ＰＺＣ）变化时可能都经历着由单氢端吸附转变为双氢端吸附，继而又转向氧端吸附的取向变化过程。利用ＳＥＲＳ技术特有的检测表面物种的高灵敏度，可观察到ＮａＣｌＯ４浓度引起的表面水的ＳＥＲＳ谱的一些细微差异，依此较详细讨论了ＮａＣｌＯ４浓度对表面水的结构和取向变化过程的影响。
By combining the special ORC method, the thin-film technique and the differential spectroscopy method, a NaClO4 / Ag system without any halogen ions was obtained over a wide potential range (-0.7 ~ -2.0V) SERS spectrum of water. The results show that, in different concentrations of NaClO4 system, although the structure of bulk water is very different, but the electrode surface adsorption of water have similar structural characteristics, that is, due to the electric field and the order of the higher; and with the electrode potential from When the PZC changes from the very negative potential to the PZC, it may all undergo the change of orientation from the single hydrogen end to the double end and then to the oxygen end. Using SERS’s unique sensitivity to detect surface species, some subtle differences in SERS spectra of surface water caused by NaClO4 concentration were observed. The effects of NaClO4 concentration on the structure and orientation of surface water were discussed in detail.