摘要分别采用水热-热解法制备同轴壳核结构的氮掺杂碳纳米管（N1-CNT），采用溶剂热合成-热解法制备碳纳米管复合金属有机骨架化合物(N2-CNT)。通过改变制备条件（如热解温度、升温速率、配比、是否预处理等）对制备工艺条件进行了探索。使用 TEM、XPS、XRD 等现代分析测试方法对制备的样品进行形貌和价态的表征，确定所制备催化剂的形貌和组成，以及氮元素结合态的分布。同时，对催化剂进行循环伏安法和旋转圆盘电极测试，确定其对氧还原反应（ORR）的电催化性能和反应过程中的电子转移机制。实验结果表明：碳纳米管（CNT）首先预处理，并以 10 ℃/min 的升温速率在 800 ℃进行热处理得到的同轴 N1-CNT 性能最佳；700 ℃处理 CNT 复合金属有机骨架 ZIF-8 得到的N2-CNT具有优越的电化学活性。42447
毕业论文关键词 氮掺杂 碳纳米管 氧还原 氮结合态 电催化剂
Title Investigation of preparation and electro catalytic properties of nitrogen doped carbon nanotubes
Abstract The hydrothermal pyrolysis method was used to prepare coaxial core-shell structure of nitrogen doped carbon nanotube (N1-CNT) and the solvothermal synthesis- pyrolysis method was used to prepare metal organic framework-carbon nanotube compound(N2-CNT) separately. The preparation process conditions were explored by changing the preparation conditions (such as pyrolysis temperature, heating rate, ratio, and pretreatment and so on). TEM, XPS, XRD and other modern analytical methods were used to characterize the morphology and valence state of the prepared samples, by which the morphology and composition of the catalysts and the distribution of the nitrogen element binding states were determined. At the same time, the catalyst was tested by cyclic voltammetry and rotating disk electrode, and the electro catalytic activity and electron transfer mechanism in the process of oxygen reduction reaction (ORR) were determined. It is showed in the experimental results that the carbon nanotube (CNT) first pre-treated, and with the heating rate of 10 ℃/min at 800 ℃ for heat treatment is comfired as a condition to obtain the best performance of coaxial N1-CNT; 700 ℃ processing CNT composite metal organic frameworks ZIF-8 is determined to obtain excellent electrochemical activity of N2-CNT.
Keywords nitrogen doped carbon nanotube oxygen reduction reaction nitrogen binding state electrocatalyst
目次
1绪论1
11课题背景和意义1
13本论文的选题依据3
14本课题的研究内容4
2实验材料与方法6
21实验试剂6
22实验仪器6
23材料学和电化学表征方法7
231透射电子显微镜（TEM）7
232X射线衍射（XRD）7
233X射线光电子能谱（XPS）8
234循环伏安法(CV)8
235旋转圆盘电极（RDE）8
3同轴壳核结构氮掺杂碳纳米管的制备及表征10
31研究路线10
32实验部分10
321同轴壳核结构氮掺杂碳纳米管的制备10
322表征方法11
33结果与讨论11
331实验结果11
332TEM分析12
333XPS分析12
334CV分析14
335RDE分析16
4碳纳米管复合金属有机骨架化合物的制备及表征19
41研究路线19
42实验部分19
421碳纳米管复合金属有机骨架化合物的制备19
422表征方法20
43结果与讨论20
431实验结果20
432XRD分析21
433XPS分析21
434CV分析22
N1-CNT氮掺杂碳纳米管的制备及其电催化性能研究:http://www.751com.cn/huaxue/lunwen_42878.html