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학술발표회초록보기

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  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Co-catalyst onto Fluorinated BiVO4 Photoelectrode for efficient Solar Water Oxidation

등록일
2019년 8월 22일 17시 02분 13초
접수번호
1552
발표코드
ELEC.O-9 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 20분
발표형식
구두발표
발표분야
Electrochemistry - Oral Presentation of Young Scholars in Electrochemistry
저자 및
공동저자
Maheswari Arunachalam, Soon Hyung Kang1,*
Department of Chemistry, Chonnam National University, Korea
1Department of Chemical Education, Chonnam National University, Korea
BiVO4 photoanode has been widely investigated due to the narrower bandgap (~ 2.4 eV) that better absorbs visible light, but, disadvantages have also reported in terms of the fast charge recombination process. Herein, we developed the doping of F- ions on BiVO4 films by the fluorination process displayed absorption onset at a wavelength of~ 525 nm, revealing a modest red shift (~14 nm), compared with that of the undoped BiVO4 film. It was notably observed in the pristine BiVO4@Air film improved electronic conductivity through the beneficial electrochemical active sites due to the fluorination induced mixed crystalline-amorphous phase. Furthermore, the deposition of the silver nanowire (Ag NW) as a cocatalyst onto F:BiVO4@Ar film further promotes onset potential (Von) shifts negatively to ∼160 mV as well as the increased J values of ~ 2.5 mA/cm2 at 1.23 V vs.RHE, ascribed to the beneficial charge transfer event and high charge transportation rate.

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