摘要本论文以Si（100）基片为衬底，利用微波等离子体化学气相沉积技术，制备了B/C=4000ppm的硼掺杂纳米晶金刚石薄膜。通过SEM薄膜表面形貌进行了表征和分析。在其表面自组装了直径约16nm的金纳米粒子，制得了金纳米粒子修饰硼掺杂纳米金刚石薄膜。采用循环伏安法研究了金纳米粒子修饰硼掺杂纳米金刚石薄膜电极的电化学性能以及对葡萄糖的检测。67801

硼掺杂纳米金刚石薄膜表面分布着大小不一的的球形团簇，金纳米粒子增强了硼掺杂纳米金刚石薄膜电极的导电性能，在K3Fe(CN)6溶液中表现出良好的重复性、可逆性和稳定性，并可在干扰物质下选择性直接电化学检测出葡萄糖。

毕业论文关键词  硼掺杂金刚石薄膜 金纳米粒子 表面形貌 电化学性能 葡萄糖

毕业设计说明书（论文）外文摘要

Title  The study of electrochemical performance of boron-doped diamond film electrode modified with gold nanoparticles  

Abstract

In this paper, boron-doped nanocrystalline diamond films were prepared on Si substrates through controlling B/C ratio which is 4000 ppm in the gas by microwave plasma chemical vapor deposition. We use SEM to analyze the surface morphology. Gold nanoparticles were modified to the surface of the boron-doped nanocrystalline diamond film. We use cyclic voltammetry method to research the electrochemical properties of boron-doped nanocrystalline diamond film electrodes modified with gold nanoparticles and investigate the direct electrochemical detection of glucose. 

Gold nanoparticles enhanced electrical conductivity, then the boron-doped nanocrystalline diamond film electrode modified with gold nanoparticles has nearly reversible electrode reaction and excellent stability in K3Fe(CN)6 electroyte. The glucose can be detected at boron-doped nanocrystalline diamond film electrode modified with gold nanoparticles selectively.

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Keywords   boron-doped diamond thin film   gold nanoparticles   Surface morphology   electrochemical properties   glucose   

目  次

1  绪论 1

1．1  硼掺杂金刚石薄膜的结构 1

1．2  硼掺杂金刚石薄膜的性能及应用 1

1．3  硼掺杂金刚石薄膜的制备 2

1．4  金纳米粒子 3

1．5  金纳米粒子在硼掺杂金刚石薄膜上的修饰 4

1．6  本论文的研究内容 4

2  实验 5

2．1  硼掺杂金刚石薄膜的制备 5

2．2  硼掺杂金刚石薄膜表面功能化修饰 5

3  实验结果与讨论 9

3．1  硼掺杂纳米金刚石薄膜的表面形貌 9

3．2  金纳米粒子形貌 9

3．3  金纳米粒子修饰率 10

3．4  金纳米粒子修饰硼掺杂金刚石薄膜电极的氧化还原行为 10

3．5  金纳米粒子修饰的硼掺杂金刚石薄膜交流阻抗研究