초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 05월 20일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제125회 대한화학회 학술발표회 및 총회 Anatase-rutile synergistic effect in TiO2 photocatalysis: Charge separation yield and recombination kinetics

2020년 6월 1일 14시 21분 29초
ENVR.O-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
화 09시 : 30분
Environmental Energy - Oral Presentation: General Student Session
저자 및
Sojung Park, Wooyul Kim1,*
Department of Chemical and Biological Engineering, Sookmyung Women's University, Afghanistan
1Department of Chemical and Biological Engineering, Sookmyung Women's University, Korea
Numerous studies have investigated photocatalytic, electrocatalytic properties of anatase, rutile, and TiO2 (anatase and rutile) composites; but, the detailed mechanism investigations are limited due to the short lifetime of the photogene rated charge carriers. In this study, the photo-(electrochemical) activity of slurry type and electrode type of two main crystalline were systematically investigated under acidic and basic conditions, in order to reveal the synergistic effect between anatase and rutile phase of TiO2 . In particular, the process of charge transfer between polymorphs were directly observed using time-resolved diffuse reflectance spectroscopy method. In slurry type, photocatalytic synergic effect between anatase and rutile was not observed while in electrode type system, the photo-electrochemical synergic effect was clearly represented, which is consisted with the charge transfer dynamic data from laser flash photolysis. In addition, using FT-IR spectroscopy technique, the recent result of mechanism will be discussed.