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用ＵＰＳ、ＸＰＳ、ＡＥＳ和功函数测定等方法考察了氯对Ｎｉ（１１０）上ＣＯ共吸附的影响。预吸附的氯强烈降低了ＣＯ的吸附速度和饱和吸附量，减少了ＣＯ—Ｎｉ的平均偶极矩。ＵＰＳ和ＸＰＳ结果表明，氯的共吸附使ＣＯ的１π和Ｏ（１ｓ）移向较高的结合能，而５σ则轻微移向较低的结合能。氯能取代表面吸附的ＣＯ并伴随总功函数的下降。氯的强电负性和空间位阻减小了Ｎｉ—ＣＯ的健合作用，从而降低了ＣＯ的吸附键能，并使Ｃ—Ｏ分子键稳定化。对氯的表面电负性修饰效应进行了讨论。
The effects of chlorine on CO co-adsorption on Ni (110) were investigated by UPS, XPS, AES and work function measurement. Pre-adsorbed chlorine strongly reduces the CO adsorption and saturation adsorption, reducing the average dipole moment of CO-Ni. The UPS and XPS results show that co-adsorption of chlorine shifts 1π and 0 (1s) of CO toward higher binding energy while 5σ shifts slightly to lower binding energy. Chlorine can replace surface-adsorbed CO with a decrease in the total work function. The strong electronegativity and steric hindrance of chlorine reduce the robustness of Ni-CO, thus reducing the adsorption bond energy of CO and stabilizing the C-O bond. The effect of modifying the surface electronegativity of chlorine was discussed.