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Articles in press
광열전환 및 촉매 특성을 가진 금-펩타이드 하이브리드 나노섬유의 합성 및 특성 분석
Synthesis and Characterization of Gold-Peptide Hybrid Nanofibers with Photothermal Conversion and Catalytic Properties
Kido Kwon1
Yun-Mi Hur1
민경익1†
1경북대학교 의생명융합공학과
In Press, Journal Pre-proof, Available online 1 February 2025
Abstract
본 연구에서는 금-펩타이드 하이브리드 나노섬유를 합성하고, 광열전환 및 촉매 특성을 조사하였다. 금 이온의 결합과 환원을 시킬 수 있는 펩타이드 서열을 설계하고, 이를 수용액에서 나노섬유로 자기조립로 자기조립하였다. 자기조립 메커니즘을 분석하기 위해, 비공유결합 억제제 처리실험을 진행하여 β-시트 구조의 형성을 확인하였다. 펩타이드 나노섬유는 생광물화 과정을 거쳐 표면에 금 나노입자를 합성하였고, 자외선-가시광선 분광광도계, 투과 전자 현미경, X선 회절 분석법을 사용하여 분석하였다. 금-펩타이드 하이브리드 나노섬유는 36.3 × 10-3 s-1의 유기염료 분해 반응 속도 상수를 가지고, 11.2%의 광열전환 효율을 가지는 것을 확인하였다.
In this study, gold-peptide hybrid nanofibers were synthesized and their photothermal conversion and catalytic properties were investigated. A peptide sequence capable of binding and reducing gold ions was designed, and it was self-assembled into nanofibers in an aqueous solution. To analyze the self-assembly mechanism, experiments with non-covalent bond inhibitors were conducted, confirming the formation of β-sheet structures. The peptide nanofibers underwent a biomineralization process to synthesize gold nanoparticles on their surface, which were analyzed using UV-Vis spectroscopy, transmission electron microscopy, and X-ray diffraction. The gold-peptide hybrid nanofibers exhibited a reaction rate constant of 36.3 × 10-3 s-1 for organic dye degradation and a photothermal conversion efficiency of 11.2%.
