Cation adsorption by hydrous manganese dioxide: A semi-quantitative X-ray photoelectron spectroscopic (ESCA) study
Cation adsorption by hydrous manganese dioxide: A semi-quantitative X-ray photoelectron spectroscopic (ESCA) study
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DOI：
10.1016/0009-2541(80)90053-4
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发表时间：
1980
期刊：
影响因子：
3.9
通讯作者：
D. Brûlé;J. R. Brown;G. Bancroft;W. Fyfe
中科院分区：
文献类型：
--
作者：
D. Brûlé;J. R. Brown;G. Bancroft;W. Fyfe
介绍了一种研究含锰氧化物对金属离子吸附的新方法。通过将铝板反复浸入稀释的mnso4和kmno4溶液中，可以在铝板上涂上一层相当光滑的薄而硬的氧化锰膜。采用表面敏感ESCA技术直接跟踪了Ni2+、La3+和Ba2+离子在氧化锰膜上的吸附。不同初始浓度下表面金属吸收量随时间的变化曲线是吸附过程的特征。本研究确定的选择性序列为Ba2+⪢Ni2+±La3+。
A novel technique is described for studying the adsorption of metal ions by hydrous manganese oxides. Aluminum plates are coated with a rather smooth thin hard film of manganese oxide by repeated alternate dipping of the plates into dilute MnSO4and KMnO4solutions. The uptake of Ni2+, La3+and Ba2+ions on the manganese oxide films is followed directly using the surface sensitive ESCA technique. Plots of metal uptake on the surface vs. time for various initial concentrations are characteristic of sorption processes. The selectivity sequence determined from this study is Ba2+⪢ Ni2+≳ La3+.