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제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Growth Inhibition of Harmful Cyanobacteria by silver doped molybdenum photocatalyst: Efficiency and Its Mechanisms

등록일
2019년 8월 28일 20시 43분 19초
접수번호
1753
발표코드
MAT.P-378 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Sondavid Nandanwar
Marine Convergence Design Collaboration Course, Pukyong National University, Korea
A novel silver doped molybdenum photocatalyst was prepared by using simple ball milling method and was employed for the inactivation of harmful cyanobacteria for the first time. The effect of photocatalyst on Microcystis aeruginosa under visible light was investigated and a possible mechanism was proposed. The results showed that the synthesized photocatalyst exhibited outstanding performance with a high removal efficiency of chlorophyll a reaching 70% after 4 h and revealed excellent stability under visible light. mechanisms were explored with respect to metal ion release, agglomeration, SEM and algal cell membrane breakage, production of extracellular hydroxyl radical, intracellular reactive oxygen species and lipid peroxidation method. The inhibition of algal growth by photocatalyst was basically attributed to the presence of hydroxyl radical and intracellular reactive oxygen species, with the released Ag+ ion and cell aggregation involved to some extent. Overall, silver doped molybdenum photocatalyst is of great potential in the control of harmful cyanobacterial blooms and the inhibition is specific to the concentration of photocatalyst.

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