光散射学报, 2004, 16 (3): 234, 网络出版: 2006-04-20
二氧化锡气敏纳米粉体的红外光谱研究
Study on IR Spectrum of Nanosized Stannic Oxide Powder
摘要
采用溶胶-凝胶法制备了纳米级SnO2,利用XRD和IR光谱对其晶化过程进行了详细研究.结果表明,硝酸胶溶有利于SnO2纳米晶的生成,676和545 cm-1处的红外吸收分别为二氧化锡中Eu型对称的Sn-O的伸缩振动和A2u型对称的O-Sn-O变角振动,且随着纳米粉体热处理温度的升高,峰形窄化,A2u型的变角振动峰强度降低.
Abstract
Nanosized stannic oxide powders were prepared by sol-gel technology. The crystallization process of the nano-SnO2 was investigated by X-ray diffraction and infrared absorption spectrum. The results show that the HNO3 peptization is benefit for the growth of nano-crystal. The Sn-O stretching vibration of Eu symmetric mode and O-Sn-O variable-angle vibration of A2u symmetric mode can be observed at 676cm~(-1) and 545 cm-1 in IR spectrum. With the calcined temperature increasing, the peak became narrow, and the intensity of A2u variable-angle vibration mode decreased.
赵杰, 赵经贵, 高山, 霍丽华. 二氧化锡气敏纳米粉体的红外光谱研究[J]. 光散射学报, 2004, 16(3): 234. 赵杰, 赵经贵, 高山, 霍丽华. Study on IR Spectrum of Nanosized Stannic Oxide Powder[J]. The Journal of Light Scattering, 2004, 16(3): 234.