不同粒度纳米氧化镁的制备及其红外吸收特性-Journalof.PDFVIP

第31 卷第8期 东 北 大 学 学 报 ( 自 然 科 学 版 ) Vol31, No. 8 2010 年 8 月 Journal of Northeastern U niversity( Natural cience) Aug. 2 0 1 0 1 2 2 2 刘国良 , 朱一民, 房 鑫 , 张维佳 ( 1. , 110004; 2. , 110004) : , XRD, IR , : 400~ 600 cm- 1, ; , IR , 50 nm , , , : ; ; ; ; : TD 985 : A : 1005-3026(2010) 08- 1192-04 Preparation of MgO with Different Nanoparticle Sizes and Their Infrared Wave Absorptivities 1 2 2 2 L I U Guo-liang , ZH U Yi-m in , FA N G X in , ZH A N G Wei-j ia ( 1. chool of ciences, Northeastern University, henyang 110004, China; 2. chool of Resources Civil Engineering, Northeastern University, henyang 110004, China. Correspondent: ZHU Yi-min, associate professor, E-mail: zhuyimin @ mail. neu. edu. cn) Abstract: MgO w ith different nanoparticle sizes w ere prepared and their samples w ere characterized by XRD and IR spectroscopy to investigate their infrared w ave absorptivities. IR - 1 spectroscopic results indicated that the absorption peak w idens in the range from 400 to 600 cm and the IR wave absorptivity is improved evidently, w here red shift and blue shift coexist. The blue shift is found w ith the decreasing particle size, then the red shift is found w hen an inflection point takes place in the vicinity that the particle size is around 50 nm. T he crystalline field effect often results in the widened absorption peak because of the surface atomic effect of nanocrystals. The decreasing nanoparticle size may l