摘要因为细菌纤维素(BC)超纯、超细、超强.特别是在湿态下的高杨氏模量、高保湿性能、优良热稳定性和低气体渗透性等方面有着其他材料无法比拟的性能,所以作为了新型的燃料电池。细菌纤维素可以负载纳米型的催化剂以改善其作为燃料电池的性能,目前,燃料电池的催化剂可用电化学沉积法、胶体法 、溶液还原法、浸渍法、气相沉积法、和超临界流体法等制备。其中还原法是最为常用的方法,他在载体的悬浮液中加入了金属盐的前驱体,通过加入还原剂使得前驱体还原成单质金属或者是合金纳米颗粒。以水热合成的方法也可以将金属离子以纳米颗粒的形式负载与细菌纤维素上进而达到催化的效果。63934
毕业论文关键字 细菌纤维素 纳米颗粒 催化剂 Nafion膜
Title The Application of Bacterial cellulose composites in fuel cells
Abstract Bacterial cellulose (BC) is ultrapure, superfine, super .It can be used as a new type of fuel cell because of its incomparable performances of high young's modulus, high moisturizing properties, excellent thermal stability and low gas permeability, especially in the wet state. Nanoparticles loading on bacterial cellulose may be supported as a catalyst to improve the performance of the fuel cell. The current of preparing catalyst of fuel cell can be electrochemical deposition method, colloid method, the solution reduction method, dipping method, a vapor deposition method, and supercritical fluid method and other preparation. Wherein, the reduction method is the most commonly used method. The metal precursor added to the suspension of the support, then added a reducing agent to reduction to elemental metal or an alloy nanoparticles. Hydrothermal synthesis method can also to form nanoparticles on bacterial cellulose and achieve the catalytic effect.
Keywords Bacterial cellulose nanoparticle catalyst Nafion membrane
1 绪论 1
1.1细菌纤维素的结构与特质 1
1.2 细菌纤维素的理性化特性 2
1.3 细菌纤维素的应用 2
1.3.1 纺织和织造工业 3
1.3.2 食品工业 3
1.3.3 医药工业 4
1.3.4电子材料领 5
1.3.5 膜工业 5
1.3.6 BC在固定化载体上的应用 6
1.3.7 BC在音响震动膜上的应用[28] 6
1.3.8 BC在渗透汽化膜上的应用 6
1.3.9 燃料电池 7
1.4 论文研究内容和研究背景 7
2 纳米Pt/细菌纤维素的催化性能研究 9
2.1 绪论 9
2.2 实验试剂及仪器 9
2.3 Pt/BC催化剂研究 10
2.4 实验步骤 11
2.5 实验结果与讨论 11
3 燃料电池用质子交换膜-细菌纤维素复合膜的研究 14
3.1绪论 14
3.2实验步骤 15
3.3结果讨论 15
4 展望 18
结 论