摘要
以离子型纤维素醚羧甲基纤维素（CMC）的水溶液为反应介质，制备[Zn4CO3（OH）6]CMC水凝胶，洗涤、干燥后经不同温度煅烧前驱物得到ZnO纳米粒子。通过XRD、SEM、TEM、TG-DSC及FT-IR等测试技术对产物的组成、粒径及形态进行表征，研究了CMC对前驱物及ZnO形态和尺寸的影响。结果表明，由于CMC加入对煅烧前驱物产生的空间位阻作用，所制得纳米ZnO粒子粒度分布均匀、分散性好、不易团聚、粒子的平均粒径〈20nm。利用UV-Vis测试了纳米ZnO的光吸收性能，所得的纳米ZnO在200—400nm具有较强的吸收性。
ZnO nanopartieles were prepared by thermal decomposition of [ Zn4 CO3（OH）6 ] CMC precursor, which was synthesized by sol-gel process in aqueous solution of earboxymethyl cellulose（CMC） polymer. The reaction precursor and the nanopartieles obtained were characterized by means of XRD, SEM, TEM, TG-DSC and FT-IR. The influence of the CMC polymer on the precursor morphology and the nanoparticle size were also investigated. The size of the ZnO nanopartieles was less than 20 nm and uniform. The agglomeration tendency of the ZnO nanopartieles was decreased due to the sterie hindrance by the adsorbed polymer. The ZnO nanoparticles exhibited an extremely strong absorption at 200 - 400 nm wavelength
出处
《应用化学》
CAS
CSCD
北大核心
2007年第6期675-679,共5页
Chinese Journal of Applied Chemistry
基金
黑龙江省科技计划项目(GC02J0302)
哈尔滨市科技公关计划项目(2004AA5C5158)
关键词
羧甲基纤维素
水凝胶
纳米ZNO
表征
carboxymethyl cellulose, sol-gel, ZnO nanoparticle, characterization
