低温配位-沉淀法合成疏水ZnO及提高泡沫稳定性的应用（英文）  

Hydrophobic ZnO: Low Temperature Complex-Precipitate Synthesis and Application in Improving Foam Stability

作　　者：顾少楠[1] 李文军[1] 罗文利 常志东[1] 周花蕾[1] 

机构地区：[1]北京科技大学功能分子与晶态材料科学与应用北京市重点实验室,北京100083 [2]中国石油、提高石油采收率国家重点实验室,北京100083

出　　处：《无机化学学报》2015年第3期594-602,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21276022)资助项目

摘　　要：以Zn(NO3)2·6H2O为原料,25%氨水为配位剂,用NaOH做沉淀剂,十六烷基三甲溴化铵(CTAB)为改性剂制备了具有不同表面接触角的氧化锌微球。采用X射线衍射,扫描电镜和表面ζ电位技术对其进行了表征,并对合成过程中体系中的组分分布以及各组分对形貌的影响进行了分析。泡沫稳定性的实验结果表明:颗粒质量浓度为0.03%,接触角为52.9°的氧化锌颗粒具有对泡沫最强的稳定作用。同时对颗粒的疏水改性和提高泡沫性的机理进行了讨论。Using Zn（NO3）2·6H2O as raw material, 25% ammonia as complexing agent and NaOH as precipitant,ZnO micro-spheres were synthesized by low temperature complex-precipitate（LTCP） method. The species distribution in the system was also analyzed. XRD and SEM were employed to characterize ZnO samples. The SEM images demonstrate that the uniform micro-spheres are about 2 μm. The morphology of the samples appears as micro-rods and as irregular polyhedrons without addition of NaOH or ammonia. ZnO micro-spheres were hydrophobically modified by varies amounts of cetyltrimethylammonium bromide（CTAB） in order to obtain different contact angles. Meanwhile, the process for surfactant molecules absorption on ZnO micro-spheres surface was discussed. The results of foam stability reveal that 0.03wt% ZnO micro-sphere with surface contact angle of52.9° makes the greatest contribution to improving the stability of foams.

关 键 词：氧化锌 配位沉淀 形貌可控 疏水效应 泡沫稳定性 

分 类 号：O614.241[理学—无机化学]