Formation of Short In2O3 Nanorod Arrays Within Mesoporous Silica
Formation of Short In2O3 Nanorod Arrays Within Mesoporous Silica
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DOI：
10.1021/jp710032w
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发表时间：
2008-01
影响因子：
3.7
通讯作者：
Shih-Chieh Chang and;Michael H. Huang
中科院分区：
文献类型：
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作者：
Shih-Chieh Chang and;Michael H. Huang
我们报告了短的In 2 O3纳米棒阵列内的介孔二氧化硅SBA-15的纳米级通道的形成。将溶解在甲醇中的In（NO3）3掺入到SBA-15粉末中，然后在氮气流下在700 °C下热处理4小时以产生密集排列的In 2 O3纳米棒。纳米棒的特征在于XRD图案，TEM图像，氮吸附-脱附等温线测量，和光学光谱。它们具有立方In 2 O3晶体结构。用2.0 M NaOH溶液去除二氧化硅骨架后获得的独立式In 2 O3纳米棒显示出6 - 7 nm的直径和大大小于50 nm的长度。一些纳米棒的长度可以短至小于10 nm。纳米棒在~ 300 nm处有吸收带。这种量子限制效应的观察可能是由小的纳米棒直径引起的。记录中心在387 nm处的荧光峰。没有其他的氧空位相关的发射信号，在蓝色到绿色光区域，.
We report the formation of arrays of short In2O3 nanorods inside of the nanoscale channels of mesoporous silica SBA-15. In(NO3)3 dissolved in methanol was incorporated into the SBA-15 powder, followed by heat treatment under a nitrogen flow at 700 °C for 4 h to generate densely aligned In2O3 nanorods. The nanorods have been characterized by XRD patterns, TEM images, nitrogen adsorption−desorption isotherm measurements, and optical spectroscopy. They possess a cubic In2O3 crystal structure. The free-standing In2O3 nanorods obtained after silica framework removal with a 2.0 M NaOH solution showed diameters of 6−7 nm and lengths of largely less than 50 nm. Some nanorods can be as short as less than 10 nm in length. The nanorods exhibit an absorption band at ∼300 nm. The observation of this quantum-confined effect is likely induced by the small nanorod diameter. A fluorescence peak centered at 387 nm was recorded. No other oxygen-vacancy-related emission signals in the blue to green light region were present,...