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首页> 外文期刊>Electroanalysis >Adsorption of Cadmium on Titanium Dioxide Nanoparticles in Freshwater Conditions - A Chemodynamic Study
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Adsorption of Cadmium on Titanium Dioxide Nanoparticles in Freshwater Conditions - A Chemodynamic Study

机译:淡水条件下二氧化钛纳米粒子对镉的吸附-化学动力学研究

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摘要

The adsorption of Cd onto two titanium dioxide nanoparticles (nTiO(2)) with distinct crystalline phases and sizes was investigated in conditions that can be found in freshwater systems (I=0.01M, pH6.0-8.5). Cd dynamic speciation was assessed by two distinct electroanalytical techniques: absence of gradients and nernstian equilibrium stripping (AGNES) and scanned stripping chronopotentiometry (SSCP). With both NPs, 1:1 CdTiO2 homogeneous and labile surface complexes are formed. To our knowledge this is the first study about the dynamic nature of the nTiO(2) surface complexes formed in the presence of Cd.
机译:在淡水系统(I = 0.01M,pH6.0-8.5)中发现的条件下,研究了镉在两个具有不同晶相和大小的二氧化钛纳米颗粒(nTiO(2))上的吸附。通过两种不同的电分析技术评估了镉的动态形态:无梯度和神经平衡剥夺法(AGNES)和扫描剥脱计时电位法(SSCP)。两种NP均会形成1:1的CdTiO2均匀且不稳定的表面复合物。据我们所知,这是关于在镉存在下形成的nTiO(2)表面配合物动力学性质的首次研究。

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