화학공학소재연구정보센터
Applied Chemistry for Engineering, Vol.31, No.3, 299-304, June, 2020
단당류와 이당류를 환원제로 합성한 은 나노입자의 Resazurin 산화환원반응 메커니즘
Resazurin Redox Reaction Mechanism Using Silver Nanoparticles Synthesized with Monosaccharides and Disaccharides
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초록
나노입자는 많은 화학합성에서 중요한 촉매역할을 한다. 촉매로 이용되는 나노입자를 합성할 때 colloidal synthesis를 많이 활용하고 있다. Colloidal synthesis를 이용해 나노입자를 합성할 경우 환원제, capping agent, shape directing agent 등이 촉매에 surface poisoning을 일으켜 촉매의 특성이 낮아질 수 있으며 합성 및 분리 과정 중 유해폐기물의 발생한다. Colloidal synthesis에서 사용되는 첨가제들의 양을 줄여 합성할 수 있는 새로운 나노입자를 합성법을 개발하여 은나노입자를 합성하였다. 결정화 기술을 이용하여 환원제, capping agent의 양을 줄일 수 있고 더욱이 합성된 나노입자 표면의 흡착되는 물질의 양을 줄여 surface poisoning을 낮출 수 있었다. 환원제로는 단당류와 이당류를 이용하여 surface poisoning이 거의 없는 은 나노입자는 resazurin의 산화환원 반응의 촉매로 이용할 수 있어 은 나노입자를 이용한 촉매 반응의 메커니즘을 분석하였다.
Nanoparticles play an important role as a catalyst in many chemical syntheses. Colloidal nanoparticles were usually synthesized with reducing, capping, and shape directing agents which induce surface poisoning of catalysts. A new green synthesis for silver nanoparticles was developed by utilizing less additives which could be a hazardous waste. A crystallization technique was employed to reduce the amount of reducing and capping agents during synthesis resulting in less surface poisoning of the nanoparticle. The synthesized Ag nanoparticles using monosaccharides and disaccharides as reducing agents could be used as a catalyst for the redox reaction of resazurin and the mechanism of the reaction using Ag nanoparticles was studied.
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