首页|Chemial Bond and Stability of Adsorption of [Au (AsS_3)]~(2-) on the Surface of Kaolinite
Chemial Bond and Stability of Adsorption of [Au (AsS_3)]~(2-) on the Surface of Kaolinite
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Density function theory and discrete variation method (DFT-DVM) were used to study the adsorption of [Au(AsS_3)]~(2-) on the surface of kaolinite. The correlation among structure, chemical bond and stability was discussed. Several models were selected with [Au (AsS_3)]~(2-) in different directions and sites. The results show that the models with gold on the edge of kaolinite basal layer contain pincerlike bond among gold and several oxygen atoms and form strong Au - O covalent bond, so these models are mare stable than these with gold abate or under the layer. The models with gold near to [AlO_2(OH)_4] octahedra are mare stable than these with gold near to the vacancy without aluminium. These two stable tendencies in kaolinite-[Au(AsS_3)]~(2-) are stronger than that in kaolinite-Au systems. The interaction between [Au(AsS_3)]~(2-) and kaolinite is stronger than that between gold and kaolinite, and this interaction is strong enough to form the surface complexes.
NETL
NSTL
