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제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Stochastic Kinetics of Nanocatalytic Systems

등록일
2019년 8월 20일 14시 47분 42초
접수번호
0507
발표코드
PHYS.P-147 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Jingyu Kang, Jaeyoung Sung1,*
Chemistry, Chung-Ang University, Korea
1Department of Chemistry, Chung-Ang University, Korea
Catalytic reaction events occurring on the surface of nanoparticle constitute a complicated stochastic process. Although advances in modern single molecule experiments enable direct measurements of individual catalytic turnover events occurring on a segment of single nanoparticle, it is yet to be known how the catalytic turnover time distribution is related to microscopic dynamics of catalytic reactions. Here, we present a general theory of the turnover time distribution for a nanoparticle catalyst and apply it to exactly solvable models of nanocatalytic systems. From our model study, we find that communication among catalytic sites greatly increases the randomness in the catalytic turnover time and dramatically affects the sign and reactant concentration dependence of the randomness parameter of nanoparticle catalytic reactions. Ubiquitous heterogeneity of nanoparticle size is an additional source of randomness in the catalytic turnover time. This work enables a quantitative analysis of the catalytic turnover time distribution for nanocatalytic systems and other catalytic systems with multiple catalytic sites.

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