| SiO_2包覆纳米TiO_2的初步探讨 |
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| 引用本文： | 孙秀果,林玉龙,贾振斌,魏雨.SiO_2包覆纳米TiO_2的初步探讨[J].微纳电子技术,2002,39(10):23-26. |
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| 作者姓名： | 孙秀果 林玉龙 贾振斌 魏雨 |
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| 作者单位： | 1. 石家庄铁道学院材料科学与工程系,河北,石家庄,050043
2. 河北师范大学化学学院,河北,石家庄,050016 |
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| 摘 要： | 为了改善纳米TiO2的分散性,利用表面包覆技术,在TiO2的表面形成致密的SiO2膜,以达到改性的目的。讨论了SiO2包覆纳米TiO2的作用、机理和包覆工艺条件,并对包覆后的TiO2通过透射电子显微镜、Z-3000Zeta电位与粒度分布仪以及红外光谱分别进行分析。实验结果表明,包膜后的TiO2表面状态发生了变化,TiO2在水溶液中的分散性能得到明显改善。由红外光谱得知,这种包覆不仅是物理包覆,也是一种化学键合,在TiO2的表面形成Ti—O—Si键。
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| 关 键 词： | SiO_2 纳米TiO_2 包覆 |
| 文章编号： | 1671-4776(2002)10-0023-04 |
| 修稿时间： | 2002年8月19日 |
Studies on SiO2-coated nanometer TiO2 |
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| SUN Xiu-guo ,LIN Yu-long ,JIA Zhen-bin ,WEI Yu.Studies on SiO2-coated nanometer TiO2[J].Micronanoelectronic Technology,2002,39(10):23-26. |
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| Authors: | SUN Xiu-guo LIN Yu-long JIA Zhen-bin WEI Yu |
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| Affiliation: | SUN Xiu-guo 1,LIN Yu-long 2,JIA Zhen-bin 2,WEI Yu 2 |
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| Abstract: | In order to improve the dispersion of nanometer TiO_2 ,It was researched on SiO_2-coat-ed nanometer TiO_2 for surface modification.The main experimental conditions and the mechanism of coating were studied.SiO_2-coated nanometer-sized TiO_2 was characterized by transmission elec-tron microscopy(TEM),IR,Z-3000Zeta potential and particle size distribution.Experimental re-sults show that dispersion of modified nano-titania has improvement in aqueous solution,and sur-face state of modified nano-titania has changed.It was known that the coating is physical and chemical surfaces of modified nano-titania form Ti -O-Si bond. |
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| Keywords: | SiO_2 nanometer TiO_2 surface coating |
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