Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Size control of Au nanoparticles by pH and effect of surface enhanced raman spectroscopy (SERS)

pH에 의한 골드나노입자의 사이즈 조절과 표면라만증강의 효과

  • Lee, Young Wook (Energy & Environment Division, Korea Institute of Ceramic Engineering & Technology (KICET)) ;
  • Shin, Tae Ho (Energy & Environment Division, Korea Institute of Ceramic Engineering & Technology (KICET))
  • 이영욱 (한국세라믹기술원 에너지환경본부) ;
  • 신태호 (한국세라믹기술원 에너지환경본부)
  • Received : 2019.11.12
  • Accepted : 2019.12.12
  • Published : 2019.12.31
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Abstract

Synthesis of gold nanoparticles (NPs) made an aqueous environment via the reduction of HAuCl4 by ascorbic acid (AC) with the surfactant of polyvinylpyrrolidone (PVP). Highly monodisperse gold particles with size ranges from 4 to 20 nm were prepared in high-yield by pH control. The synthesized gold nanoparticles were analyzed for structural and optical properties using transmission electron microscopy (TEM) and UV-vis spectroscopy. In this study, we could reveal that the prepared nanoparticles exhibited efficient surface-enhanced Raman scattering (SERS) properties, and their SERS activities depends on size.

금 나노 입자의 합성은 폴리바이닐피롤리던(PVP)의 계면 활성제로 아스코르브 산(AC)에 의한 골드 솔트의 환원을 통해 수용액 환경을 만들었다. pH 제어에 의해 4 내지 20 nm의 크기 범위를 갖는 고분 산성 금 입자를 고수율로 제조하였다. 합성된 금 나노 입자의 구조적 및 광학적 특성은 투과 전자 현미경(TEM) 및 UV-vis 분광법에 의해 특성화되었다. 제조된 나노 입자는 효율적인 표면 강화 라만 산란(SERS) 특성을 나타내었고, 이들의 SERS 활성은 크기에 의존한다.

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References

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