Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Preparation of Gold-Peptide Hybrid Nanoparticles and Its Applications in Catalytic Reduction of Methylene Blue

금-펩타이드 하이브리드 나노입자의 제조와 메틸렌 블루의 촉매 환원 응용

  • Hur, Yun-Mi (Biomedical Convergence Science and Technology, Kyungpook National University) ;
  • Min, Kyoung-Ik (Biomedical Convergence Science and Technology, Kyungpook National University)
  • 허윤미 (경북대학교 의생명융합공학과) ;
  • 민경익 (경북대학교 의생명융합공학과)
  • Received : 2021.02.08
  • Accepted : 2021.02.23
  • Published : 2021.04.10
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Abstract

In the present work, we studied a method for the synthesis of uniform gold-peptide hierarchical superstructures using tyrosine rich peptide, Tyr-Tyr-Leu-Tyr-Tyr (YYLYY). Peptide nanoparticles self-assembled by dityrosine bonds were synthesized through the photo-crosslinking reaction of the peptide, and gold-peptide hybrid nanoparticles were synthesized using biomineralization properties of tyrosine in a green synthetic manner. The synthesized gold-peptide hybrid nanoparticles were then characterized by transmission electron microscopy, scanning electron microscopy, dynamic light scattering, UV-vis spectroscopy, scanning transmission electron microscopy-energy dispersive X-ray spectroscopy, and X-ray diffraction. Furthermore, the catalytic activity of gold-peptide hybrid nanoparticles was confirmed by the reduction reaction of methylene blue where the catalytic reaction rate constant was 13.4 × 10-3 s-1.

본 연구에서는 타이로신이 풍부한 펩타이드, Tyr-Tyr-Leu-Tyr-Tyr (YYLYY)를 이용하여 금 나노입자를 담지한 균일한 금-펩타이드 계층적 초분자 구조체의 합성에 대해 연구하였다. 펩타이드의 광가교 반응을 통해 다이타이로신 결합으로 자기조립된 펩타이드 나노입자를 합성하였고, 타이로신의 생체 광물화 특성을 이용하여 금-펩타이드 하이브리드 나노입자를 친환경적 방법으로 합성하였다. 합성된 금-펩타이드 하이브리드 나노입자는 투과 전자 현미경(TEM), 주사투과 전자 현미경(SEM), 동적 광산란(DLS), 자외선-가시광선 분광광도계(UV-Vis spectroscopy), 에너지 분산 X선 분광법(STEM-EDS), X선 회절 분석법(XRD)을 통해 분석하였다. 또한 합성된 금-펩타이드 하이브리드 나노입자는 메틸렌블루의 환원 반응에서 13.4 × 10-3 s-1의 반응속도 상수를 가지는 촉매 특성을 확인하였다.

Keywords

References

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