基于氧化锌—导电高分子的复合材料的制备、表征及性能研究

发布时间：2018-05-25 15:34

  本文选题：氧化锌 + 聚吡咯　； 参考：《江苏科技大学》2015年硕士论文

【摘要】：近年来,有机高分子-无机纳米复合材料的研究已经成为一个极富生命力的研究领域,这种材料将有希望在光学、电磁学、机械学、生物学等领域得到广泛的应用。ZnO作为新型半导体材料,因其独特的催化、电学、光电学性质在各方面都有好的应用潜能。导电高分子,以聚苯胺、聚吡咯为主,因其独特的性质逐渐成为人们研究的焦点。本论文主要制备含有ZnO和导电高分子的二元和三元复合物,并对其进行表征和光催化及电化学性能研究,具体研究内容如下:(1)通过原位复合制备Ppy,水热法制备不同Ppy含量的ZnO/Ppy(20%、40%、60%)复合物,通过红外光谱(FT-IR)、扫描电镜(SEM)和X射线衍射(XRD)对所制样品进行形貌表征,结果表明60%时复合物的形貌分布较均匀;通过对甲基橙染料的光催化降解研究复合物的催化性能,得出Ppy含量为60%时,复合物的催化性能较优;在(1M)KCl溶液中,用复合物自制研究电极,运用三电极体系测定循环伏安曲线,对样品的电学性质进行初步研究,得出相对质量为60%时,复合物有对称的氧化还原峰,可逆性能较好。(2)用甘氨酸-硝酸盐燃烧法制备出不同温度(200℃、400℃和600℃)的La0.3Ca0.7Fe0.7Ni0.3O3钙钛矿型复合氧化物,用氯化高铁做氧化剂,利用200℃、400℃和600℃不同温度的钙钛矿,通过溶液原位复合法制备ZnO/La0.3Ca0.7Fe0.7Ni0.3O3/Ppy三元复合物,利用红外光谱(FT-IR)、扫描电镜(SEM)和X射线衍射(XRD)对所制样品进行形貌表征;通过样品对亚甲基蓝溶液的降解研究其光催化性能;利用(200℃、400℃和600℃)ZnO/La0.3Ca0.7Fe0.7Ni0.3O3/Ppy复合物制成工作电极,来对其电催化性能作初步研究,结果表明三元复合物中,Ppy在La0.3Ca0.7Fe0.7Ni0.3O3/Ppy和ZnO表面形成了包覆结构,600℃下复合物的降解效果较好,而400℃时复合物的电化学性能较好。(3)采用液相法制备不同比例(2:1;1:1;1:2)的ZnO/Fe3O4复合物,以过硫酸铵为氧化剂,原位聚合制备ZnO/Fe3O4/PANI三元复合物,通过红外光谱(FT-IR)、扫描电镜(SEM)、X射线衍射(XRD)对复合物进行形貌表征,发现对三元复合物而言,PANI形成包覆结构;通过对亚甲基蓝的光催化降解实验研究其催化性能,结果表明二元复合物比例为2:1时,对亚甲基蓝的降解效果较好;利用循环伏安曲线对复合物电化学性质进行初步研究,结果表明,2:1时三元复合物的电化学性能较好,氧化还原峰较对称。
[Abstract]:In recent years, the research of organic polymer-inorganic nanocomposites has become a very vitality research field, this kind of material will have the hope in optics, electromagnetism, mechanics, As a new type of semiconductor material, ZnO has been widely used in many fields such as biology, because of its unique catalytic, electrical and optoelectronic properties. Conductive polymers, mainly Polyaniline and polypyrrole, have gradually become the focus of research because of their unique properties. In this thesis, binary and ternary complexes containing ZnO and conductive polymers were prepared, and their photocatalytic and electrochemical properties were studied. The specific contents of the study are as follows: (1) Ppy was prepared by in situ compounding, and ZnO / Ppy20 / Ppy20 / (6060D) composites with different Ppy content were prepared by hydrothermal method. The morphology of the samples was characterized by FT-IRT, SEM (SEM) and X-ray diffraction (XRD). The results showed that the morphology of the complex was more uniform at 60th time, and the catalytic performance of the complex was studied by photocatalytic degradation of methyl orange dye. The results showed that the catalytic performance of the complex was better when the content of Ppy was 60%. The electrochemical properties of the sample were preliminarily studied by using the complex self-made study electrode, the cyclic voltammetry curve was determined by the three-electrode system, and the symmetrical redox peak was obtained when the relative mass was 60. La0.3Ca0.7Fe0.7Ni0.3O3 perovskite complex oxides were prepared by glycine nitrate combustion at different temperatures (200 鈩，

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