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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Nanocrystalline silica from termite mounds
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Nanocrystalline silica from termite mounds

机译：白蚁丘的纳米晶二氧化硅

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摘要

To develop a better understanding of the physical properties and microstructures of the termite hill soils, we have carried out studies on the soil samples collected from two locations: near Dehradun, Uttara-khand and near Hauz Khas, New Delhi. Theirelemental composition and microstructure were studied using different instrumentation techniques, such as powder X-ray diffraction, field emission scanning electron microscopy, transmission electron microscope (TEM) and energy-dispersive analysis of X-ray (EDAX). alpha-Quartz (Si0_2) was present in both the samples, while the sample collected from Hauz Khas, Delhi also contained beta-cristobalite phase of Si0_2. TEM-EDAX showed that termite hill soil consisted of silica (quartz), aluminium oxide, manganese oxide and iron oxide along with small percentage of potassium and calcium. Our studies highlight the potential to generate alpha-quartz from all termite hills. It is also possible to obtain the less common beta-cristobalite form of silica in certaintermite mounds.
机译：为了更好地了解白蚁丘陵土壤的物理性质和微观结构，我们对从两个地点采集的土壤样品进行了研究：两个地点：Uttara-khand附近的Dehradun和新德里的Hauz Khas附近。使用不同的仪器技术研究了基本成分和微观结构，例如粉末X射线衍射，场发射扫描电子显微镜，透射电子显微镜（TEM）和X射线能量色散分析（EDAX）。这两个样品中均存在α-石英（SiO 2_2），而从德里的Hauz Khas收集的样品中也含有SiO 2的β-方石英相。 TEM-EDAX显示白蚁丘陵土壤由二氧化硅（石英），氧化铝，氧化锰和氧化铁以及少量的钾和钙组成。我们的研究强调了从所有白蚁山丘产生α石英的潜力。也可以在某些白蚁丘中获得较少见的β-方石英形式的二氧化硅。

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