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2009 , Vol. 24 >Issue 3: 512 - 516

DOI: https://doi.org/10.3724/SP.J.1077.2009.00512

研究论文

玉米植株中的植硅石及其纳米SiO2的制备

  • 崔 鹏 ,
  • 苑世领 ,
  • 徐桂英
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  • 山东大学 胶体与界面化学教育部重点实验室, 济南 250100

收稿日期: 2008-09-03

  修回日期: 2008-12-11

  网络出版日期: 2009-05-20

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Phytoliths in Mealies Corns and Preparation of SiO2 Nano-materials

  • CUI Peng ,
  • YUAN Shi-Ling ,
  • XU Gui-Ying
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  • Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100,China

Received date: 2008-09-03

  Revised date: 2008-12-11

  Online published: 2009-05-20

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摘要

以玉米植株为原料制备了纳米结构SiO2. 通过常温混酸浸泡等手段在玉米植株中观察到了微米级植硅石，并以植硅石为原料，通过煅烧、硝酸煮沸等方法制备了纳米级SiO2；运用X射线粉末衍射（XRD）、光学显微镜、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、电子能谱（EDS）、红外光谱(IR)等手段对样品进行了表征. 结果表明，玉米茎表皮和叶中植硅石均为哑铃形，前者沿木质素导管方向顺向排列，后者为横向排列；经硝酸煮沸煅烧后，植硅石可以形成103nm左右的SiO2球，并随着煅烧温度的升高，纳米球逐渐交联.

关键词： 植硅石; 玉米植株; 纳米SiO2

本文引用格式

崔 鹏 , 苑世领 , 徐桂英 . 玉米植株中的植硅石及其纳米SiO2的制备[J]. 无机材料学报, 2009 , 24(3) : 512 -516 . DOI: 10.3724/SP.J.1077.2009.00512

Abstract

Nanostructure SiO2 was prepared from mealies corns. The micron phytoliths were obtained after treatment with mixed acids, using the phytolith samples as raw materials, nano-silica was obtained through calcining at certain temperature after boiling in the nitric solution. And its structure was characterized by X-ray diffraction (XRD), optical microscope, transmission electron microscope (TEM), scanning electron microscope (SEM), energy dispersive spectroscope (EDS) and Infrared Spectroscope (IR). The results show that the phytoliths are all dumbbelltype in cornstalks and leaves in the micro level; however they are located along or against vertically the lignose, respectively. The nanosilica with diameter of 103nm is obtained through calcination after boiling in HNO3 solution, and the nano SiO2 crosslink in higher temperature.

Key words： phytoliths; mealies corns; nano SiO2

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