纳米CeO_2的紫外吸收和表面改性研究  

Ultraviolet Absorption and Surface Modification of Nanometer CeO_2

作　　者：王艳荣[1] 李彦涛[1] 李亚萍[1] 

机构地区：[1]河南工业大学

出　　处：《化工时刊》2008年第1期4-6,共3页Chemical Industry Times

基　　金：2005河南工业大学校级科研基金(050210)

摘　　要：紫外吸收光谱分析氨水沉淀法制备的粒度在10nm的纳米二氧化铈表明在200～480nm的范围具有较好的紫外吸收能力。用无水乙醇为溶剂，硬脂酸为改性剂，初步探讨了纳米CeO2进行表面改性机理。活化度和吸油值分析表明，当硬脂酸用量在2．5％时，已经有较好改性效果，为纳米CeO2在聚合物中的应用提供一定的参考价值。The nanometer CeO2 prepared using the precipitation method possess had good ultraviolet absorption ability by ultraviolet absorption spectral analysis. The nanosized CeO2 were surface modified using the ethanol as solvent and stearic acid as the modifying agent and the mechanism of modification were preliminary discussed. Active ration and absorp tion oil value analysis indicated the optimal amount of stearic acid was 2.5 % in mass, which provided certain reference value for the application of nanometer CeO2 in the polymer.

关 键 词：纳米CEO2 紫外吸收 表面改性 硬脂酸 

分 类 号：O614.332[理学—无机化学]