机械化学法一步合成表面改性氧化锌纳米粉体

材料研究学报

2010, Vol. 24

Issue (3): 289-293

研究论文

本期目录 | 过刊浏览

机械化学法一步合成表面改性氧化锌纳米粉体

魏伟,王茗,王林江

桂林理工大学材料科学与工程学院有色金属及材料加工新技术教育部重点实验室桂林 541004

One–step Synthesis of Surface Modification ZnO Nanopowders by Mechanochemical Reaction

WEI Wei, WANG Ming, WANG Linjiang

引用本文:

魏伟王茗王林江. 机械化学法一步合成表面改性氧化锌纳米粉体[J]. 材料研究学报, 2010, 24(3): 289-293.
, , . One–step Synthesis of Surface Modification ZnO Nanopowders by Mechanochemical Reaction[J]. Chin J Mater Res, 2010, 24(3): 289-293.

全文: PDF(896 KB)

摘要:

以醋酸锌、氢氧化钠、硬脂酸为原料, 采用机械化学法,一步制备出具有表面亲油性能的氧化锌粉体。借助XRD、FT--IR、TEM、纳米粒度测试等方法对粉体进行了表征, 研究了硬脂酸对氧化锌粉体表面改性的机理。结果表明, 硬脂酸中的羧基与氧化锌颗粒表面的羟基发生了酯化反应, 并在表面形成有机膜, 氧化锌粉末由亲水性转化为亲油性。当球磨时间为50 min、硬脂酸加入量为氧化锌质量的4.5%时, 可以得到平均粒度为90 nm的亲油性氧化锌粉体。

关键词 ：机械化学法，氧化锌，表面改性

Abstract：

Zinc oxide nanopowder with hydrophobic surface was synthesised by mechanochemical reaction using zinc acetate sodium hydroxide and stearic acid as raw materials. The modification mechanism of stearic acid on the surface property of ZnO was studied using XRD, FT–IR, TEM and particle size measurement. The experiment results show that an organic film was formed through covalent bond between the carboxyl of stearic acid and hydroxylic on the ZnO surface. The surface property of ZnO nanopowder was changed from hydrophilic to hydrophobic coated with a monomolecular layer of aliphatic
chains. When the milling time is 50 min and the mass content of stearic acid in ZnO 4.5%, the ZnO nanopowder with optimal modification effect can be achieved.

Key words： mechanochemical reaction, zinc oxide, surface modification

收稿日期: 2010-03-01

ZTFLH:

O614

基金资助:

国家自然科学基金40972033,广西教育厅科研项目200708MS130和广西有色金属及特色材料加工重点实验室开放基金资助项目。

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https://www.cjmr.org/CN/ 或 https://www.cjmr.org/CN/Y2010/V24/I3/289

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