摘要：以对苯二甲酸钠溶液和硝酸铈溶液，以聚乙烯醇为表面活性剂，利用超声辅助液相合成法合成了扇形对苯二甲酸铈纳米多级结构，并且经煅烧得到形貌遗传的二氧化铈。采用红外光谱、粉末XRD、扫描电镜、紫外吸收光谱、荧光光谱、热分析和循环伏安等分析手段对得到的对苯二甲酸铈及二氧化铈进行了表征和性能的研究。确定了对苯二甲酸铈这一前驱体的扇形形貌，可直接遗传给二氧化铈。电化学循环伏安实验表明，扇形纳米多级结构的存在促进了血红蛋白在玻碳电极表面的直接电化学行为。59202

毕业论文关键词：超声辅助液相合成，对苯二甲酸铈，二氧化铈，纳米多级结构，循环伏安 

Abstract： By the reaction of terephthalic acid sodium solution with cerium nitrate solution, nano hierarchical architectures of [Ce(1,4-BDC)1.5(H2O)2] with controllable morphology have been synthesized successfully via an ultrasonic-assisted solution-phase method in the presence of polyving akohol as surfactant. Through calcination precursor of [Ce(1,4-BDC)1.5(H2O)2], ceria has been obtained with inherited morphology from the precursor. The  [Ce(1,4-BDC)1.5(H2O)2] and ceria have been characterized by FT-IR spectrum, X-ray powder diffraction (XRD), scanning electron microscopy (SEM)，ultraviolet absorption spectrum and fluorescence spectrum, thermogravimetric analysis (TG) and cyclic voltammograms. The experimental results indicate that the precursor of [Ce(1,4-BDC)1.5(H2O)2] has fan-like morphology, and the fan-like morphology can be inherited to its decomposition-product of ceria directly. Cyclic voltammograms at different scan rates were recorded and the redox peak currents were increased linearly with the scan rate, which is a typical characteristic of surface-controlled thin-layer electrochemical behavior

Key words：[Ce(1,4-BDC)1.5(H2O)2], CeO2, ultrasonic-assisted, solution-phase synthesis, characterization 

目  录

1 引言 5

2 实验部分 5

2.1 仪器 5

2.2 试剂 5

2.3 纳米多级结构MOCP对苯二甲酸铈及二氧化铈的制备： 5

3 结果与讨论 6

3.1 对苯二甲酸铈纳米多级结构的表征和性能研究 6

3.1.1 对苯二甲酸铈的粉末XRD分析 6

3.1.2 红外光谱 7

3.1.3 对苯二甲酸铈的热重分析 8

3.1.4 扇形对苯二甲酸铈的荧光光谱分析 8

3.1.5 扇形纳米多级结构对苯二甲酸铈的SEM分析 9

3.1.6 反应时间对扇形对苯二甲酸铈形貌的影响及其形成机理 10

3.1.7 反应物浓度对对苯二甲酸铈纳米多级结构的影响 12

3.1.8 表面活性剂聚乙烯醇的浓度对对苯二甲酸铈分层结构的影响 13

3.1.9 超声波功率对对苯二甲酸铈纳米多级结构的影响 15

3.1.10煅烧对苯二甲酸铈纳米多级结构所得的样品的XRD分析 16

3.2二氧化铈的电化学性能研究 16

3.2.1 Hb-CeO2-Nafion修饰的玻碳电极的制备 16

3.2.2 Hb在二氧化铈纳米多级结构修饰的玻碳电极上的直接电化学行为 17