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• W2106190431 abstract "일반적으로 그라파이트는 높은 결정성으로 인해 나노입자상으로 제조하기 어려우며 특히 표면에친수성을 부여하기가 쉽지 않은 재료로 알려져 왔다. 본 연구에서는 박막 증착에 널리 활용되어오던 펄스 레이저 어블레이션 기법을 액상에 적용하여 친수성이 부여된 그라파이트 나노입자를합성하였다. 타겟으로는 그라파이트 로드를 사용하였으며 레이저 출력을 조절하며 액상에서 어블레이션을 실시한 결과 매우 높은 분산 안정성을 갖는 친수성 그라파이트 나노입자를 합성할 수있었다. FT-IR 분석결과 합성된 친수성 그라파이트 나노입자는 카르복시기 및 카르보닐기 등이나노입자의 형성과 동시에 표면에 도입된 것이 밝혀졌으며 이는 제타 포텐셜로도 확인할 수 있었다. 최종적으로 Polyethyleneglycol(PEG)과 컴포지트하여 아세톤 센서에 적용한 결과 기존의카본 블랙 대비 우수한 감도를 나타내었다.Abstract: It is widely recognized that it is hard to prepare hydrophilic graphite nanoparticlesbecause of their high crystallinity and inert characteristics. In this study, we successfully syn-thesized the hydrophilic graphite nanoparticles by using liquid phase pulsed laser ablationmethod which has been actively employed for the thin film deposition up to now. The obtainedhydrophilic graphite showed an ultra-high dispersion stability in water, because the hydrophilicfunctional groups like carboxyl and carbonyl group was simultaneously introduced onto thegraphite surface with the nanoparticle formation, as confirmed by FT-IR and zeta potential mea-surements. Finally, a markedly enhanced gas sensing ability for acetone was shown in com-parison with the conventional carbon black for the carbon polymer composite sensor withpolyethyleneglycol (PEG).Keywords : Liquid phase pulsed laser ablation, Hydrophilic graphite nanoparticles, PEG, Carbon-polymer composite, Electronic nose" @default.
• W2106190431 created "2016-06-24" @default.
• W2106190431 creator A5029085217 @default.
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• W2106190431 date "2012-11-30" @default.
• W2106190431 modified "2023-09-25" @default.
• W2106190431 title "Hydrophilic Graphite Nanoparticles Synthesized by Liquid Phase Pulsed Laser Ablation and Their Carbon-composite Sensor Application" @default.
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• W2106190431 doi "https://doi.org/10.5229/jkes.2012.15.4.236" @default.
• W2106190431 hasPublicationYear "2012" @default.
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