Characterization of pebble surfaces coated with biogenic manganese oxides by SIMS, XPS and SEM
Characterization of pebble surfaces coated with biogenic manganese oxides by SIMS, XPS and SEM
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DOI：
10.1016/j.apsusc.2008.11.004
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发表时间：
2008-12
影响因子：
6.7
通讯作者：
H. Seyama;Y. Tani;N. Miyata;M. Sōma;K. Iwahori
中科院分区：
文献类型：
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作者：
H. Seyama;Y. Tani;N. Miyata;M. Sōma;K. Iwahori
采用二次离子质谱（SIMS）、X射线光电子能谱（XPS）和扫描电镜（SEM）对河床卵石表面生物锰氧化物膜进行了分析。结合能量色散X射线光谱（EDXS）的SEM观察证实，涂层主要由锰氧化物组成（厚度，5 μ m至几十μ m）。卵石表面的SIMS和XPS分析表明，涂层还含有铁氧化物，硅酸盐矿物和碳质材料。Mn 2p光电子能谱表明，锰氧化物主要由Mn（IV）组成。通过SIMS的深度剖析表明，Mn和Si的二次离子强度增加和减少，分别与溅射时间，这证实了涂层的表面含有硅酸盐矿物颗粒。此外，锰的深度分布显示出振荡模式，表明生物锰氧化物涂层的精细结构。
The biogenic manganese oxide coating on the surface of a riverbed pebble was analyzed by means of secondary ion mass spectrometry (SIMS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). SEM observation combined with energy-dispersive X-ray spectroscopy (EDXS) confirmed that the coating consisted mainly of manganese oxide (thickness, 5μm to a few tens of micrometers). SIMS and XPS analyses of the pebble surface suggested that the coating also contains iron oxides, silicate minerals and carbonaceous materials. The Mn 2p photoelectron spectrum indicated that the manganese oxide consists mainly of Mn(IV). Depth profiling by SIMS showed that the secondary ion intensities of Mn and Si increased and decreased, respectively, with sputtering time, which confirmed that the surface of the coating contains silicate mineral particles. In addition, the depth profile of Mn showed an oscillating pattern, suggesting a fine structure of the biogenic manganese oxide coating.