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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Support Effect of Plasmonic Nanoparticles on Carbon Nanotubes at Single-molecule Level

2018년 8월 22일 16시 25분 13초
ANAL2.O-14 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 10시 : 25분
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
Yingying Cao, Seong Ho Kang1,*
Chemistry, Kyung Hee University, Korea
1Department of Applied Chemistry, Kyung Hee University, Korea
Supported catalysts were synthesized with gold nanoparticles deposited on the outer surface (Au/CNTs-out) and inner surface (Au/CNTs-in) of CNTs by wet chemistry method. Single-molecule nanocatalysis measurements were carried out using a lab-built prism-type total internal reflection fluorescence microscope (TIRFM) by detecting the fluorescence from the reduction reaction catalyzed over Au/CNTs-out and Au/CNTs-in. The results indicated the support effect of CNTs in both product formation process and product dissociation process. For the product formation process, Au/CNTs-out showed higher catalytic activity than Au/CNTs-in because gold nanoparticles on the exterior of CNTs have relatively enriched electrons compared to those on the interior walls. For the product dissociation process, Au/CNTs-out exhibited the faster product molecules dissociation rate than Au/CNTs-in. Moreover, same dissociation pathway was observed. Product molecules on both Au/CNTs-out and Au/CNTs-in preferred the reactant-assisted dissociation pathway. Our research advances the traditional single-molecule method to provide insights into the supported catalysts.