| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 |
21권 1호, p.1355 |
| 발표분야 |
박균영 교수 정년 기념 심포지엄: 새로운 도약을 위한 분체연구동향(미립자공학부문위원회 주제별 심포지엄) |
| 제목 |
Synthesis of 3D Graphene Based Composites for Biosensor and Energy Materials |
| 초록 |
We synthesized GR based nanocomposites such as TiO2/GR and Pt/GR for glucose biosensor and electrocatalyst respectively. The nanocomposites were fabricated from a colloidal mixture of TiO2 nanparticles or aqueous chloroplatinic acid (H2PtCl6) and graphene oxide(GO) sheets via an aerosol spray pyrolysis. The effect of the precursors content in the colloidal mixture on the composite property, including the morphology, crystal structure and specific surface area was investigated. The particle morphology of TiO2/GR composites was spherical in shape and micron-sized TiO2 particles were encapsulated by GR nanosheets. The glucose biosensor fabricated by TiO2/GR composite showed higher catalytic performance for glucose redox than a pure TiO2 and GR biosensor. The morphology of Pt/GR was the shape of a crumpled sheet of paper and the average size of the composite was around 1.3µm in diameter. As Pt content increased from 2 to 20wt% higher numbers of Pt nanoparticles are observed on the GR at higher Pt content and the specific surface area of the composite also increased from 122 to 146m2/g. The glucose biosensor fabricated by Pt/GR composite showed higher performance on methanol oxidation than a commercial Pt/carbon black elctrocatalyst. |
| 저자 |
Hee Dong Jang, Sun Kyung Kim, Hankwon Chang
|
| 소속 |
Korea Institute of Geoscience and Mineral Resources |
| 키워드 |
synthesis; graphene; biosensor; energy materials
|
| E-Mail |
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| 원문파일 |
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