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Synthesis and Optical Properties of ZnO Nanoparticles in Submicron PS Hollow Reactors
Xue-feng Huang,Fei-fei Ju,Mo-zhen Wang*,Xue-wu Ge
Author NameAffiliationE-mail
Xue-feng Huang CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Fei-fei Ju CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Mo-zhen Wang* CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China pstwmz@ustc.edu.cn 
Xue-wu Ge CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Abstract:
ZnO nanoparticles were first encapsulated in submicron PS hollow microspheres through two-step swelling process of core-shell structured PMMA/PS (PMMA: polymethyl methao-rylate) microspheres in acid-alkali solution, and the ZnO precursors, i.e. the ethanol solu-tions of (CH3COO)2Zn and LiOH. The transmission electron microscope, X-ray diffraction, and thermogravimetric analysis results show that the feeding order of ethanol solutions of (CH3COO)2Zn and LiOH in the second swelling step has great influence on the loading efficiency and the size of ZnO nanoparticles, but little on their crystal form. The photolumi-nescence and UV-Vis absorption behavior of ZnO/PS microspheres show that the PS shell can effectively avoid the fluorescence quenching effect.
Key words:  ZnO/PS hybrid material, Core-shell polymer, Swelling, PS hollow microsphere, Optical property
FundProject:
Zno纳米粒子在PS中空微反应器中的合成与光学性能
黄学凤,琚飞飞,汪谟贞*,葛学武
摘要:
通过种子乳液聚合合成核壳结构的聚甲基丙烯酸甲酯/聚苯乙烯(PMMA/PS)复合微球,通过酸碱溶胀法进一步制备出次微米级的PS中空微球. 将此中空微球作为微反应器,使在ZnO纳米粒子前驱体溶液中溶胀, 最终ZnO纳米粒子在PS中空微球中原位生成. 实验表明, 组成ZnO纳米粒子前驱体溶液的两种组 分(CH3COO)2Zn和LiOH的滴加顺序不同对最终生成的ZnO纳米粒子的尺寸和负载效率有很大的影响,但并不改变ZnO纳米粒子的晶型. 复合物的光致发光和UV-Vis吸
关键词:  ZnO/PS复合材料,核壳结构聚合物微球, 溶胀,PS中空微球,发光性能
DOI:10.1088/1674-0068/25/06/719-724
分类号: