Tuning the pore wall morphology of mesoporous silicon from branchy to smooth, tubular by chemical treatment
Tuning the pore wall morphology of mesoporous silicon from branchy to smooth, tubular by chemical treatment
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通过化学处理将介孔硅的孔壁形态从分支状调整为光滑管状
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
P. Lemmens
中科院分区：
文献类型：
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作者：
Pushpendra Kumar;T. Hofmann;K. Knorr;P. Huber;P. Scheib;P. Lemmens
化学处理对物理和化学性质的影响，即，采用氮气吸附等温线、扫描电镜和傅里叶变换红外光谱等方法研究了电化学法制备的介孔硅的孔径、孔隙率、比表面积和化学键合。吸附等温线的测量显示了多孔材料的一般行为，但在同一时间，他们表现出明显的差异后，不同的化学处理的多孔层。傅里叶变换红外光谱清楚地观察到，化学处理后多孔硅壁的化学环境发生了显着变化。在扫描电子显微镜图像中，我们看到，粗糙的树枝状结构的孔壁被修改为光滑的管状孔壁结构的化学处理。纳米晶多孔硅中的光学硅声子的非对称展宽和位移也清楚地观察到了这种变化。
The effect of chemical treatment on physical and chemical properties, i.e., pore diameter, porosity, specific surface area, and chemical bonding of electrochemically formed mesoporous silicon were investigated by using of nitrogen sorption isotherm, scanning electron microscopy, and Fourier transform infrared spectroscopy. The adsorption isotherms measurements show the general behavior found for the porous materials, but at the same time, they exhibit clear differences following different chemical treatments of porous layer. It was clearly observed from Fourier transform infrared spectroscopy that the chemical environment of porous silicon wall changes significantly after chemical treatment. In scanning electron microscopy images, we see that the rough dendritic structure of the pore walls is modified to smooth tubular pore wall structure on chemical treatment. The changes in nanocrystalline porous silicon were also clearly observed by an asymmetric broadening and shift of the optical silicon phonons in R...
影响因子：
56.9
作者：
Lin, VSY;Motesharei, K;Ghadiri, MR
通讯作者：
Ghadiri, MR