S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Theses (Ph.D. / Sc.D._화학생물공학부)
Fabrication of Palladium-decorated Polypyrrole and Graphene Electrodes for Sensor Applications
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- 공과대학 화학생물공학부
- Issue Date
- 서울대학교 대학원
- palladium ; polypyrrole ; graphene ; sensor
- 학위논문 (박사)-- 서울대학교 대학원 : 화학생물공학부, 2017. 2. 장정식.
- There has been tremendous research for the devolopment of novel materials with excellent properties and performances. In particular, composite materials, consist of inorganic and organic component, not only display synergetic effect between inorganic (high performance) and organic (high stability) but also meet the economic and environmental demands. Among them, palladium contained carbon-based composite materials have attracted enormous attention in research and industry fields due to the high hydrogen reactivity and catalytic performance. Although blending technique of inorganic nanomaterials as filler and carbon materials already applied for various part, there is still lack of investigation on the decoration of inorganic materials on the carbon materials.
This dissertation demonstrates that polypyrrole/polyacrylonitrile nanofibers using electrospinning and VDP (vapor deposition polymerization) and graphene thin layer using CVD (chemical vapor deposition) were fabricated as conductive substrates, and then, composite materials based on palladium nanostructure synthesized via electrodeposition process. These synthesized composite materials present improved electric and chemical properties, enabling to be applied for various sensor applications. When introduced to transducer materials for sensor device, it provides the fast response and high stability owing to the synergetic effect. In addition, increasing surface area from controllable palladium nanostructure induces the amplified interaction with target materials and facilitates realization of the high sensitive sensor.
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