Visible-Light-Driven Photocatalytic Water Oxidation by a pi-Conjugated Donor Acceptor Donor-Chromophore/Catalyst Assembly
- 주제(기타) Chemistry, Physical; Electrochemistry; Energy & Fuels; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
- 설명문(일반) [Eom, Yu Kyung; Leem, Gyu; Schanze, Kirk S.] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 USA; [Nhon, Linda; Reynolds, John R.] Georgia Inst Technol, Sch Chem & Biochem, Sch Mat Sci & Engn, Ctr Organ Photon & Elect,Georgia Tech Polymer Net, Atlanta, GA 30332 USA; [Sherman, Benjamin D.] Texas Christian Univ, Dept Chem & Biochem, Ft Worth, TX 76129 USA; [Wang, Degao; Troian-Gautier, Ludovic; Meyer, Thomas J.] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA; [Kim, Soojin; Kim, Jinheung] Ewha Womans Univ, Dept Chem & Nano Sci, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000156133
- 본문언어 영어
- Published As http://dx.doi.org/10.1021/acsenergylett.8b01020
초록/요약
The organic chromophore 2,2'-(benzo[c][1,2,5]thiadiazole-4,7-diyObis(thiophene-3-carboxylic acid), T2-BTD, was prepared and investigated along with metal complex [Ru(bda)(pyP)(2)] (bda = 2,2'-bipyridine-6,6'-dicarboxylate; pyP = 3-(pyridine-4-yloxy)propyl)phosphonic acid), RuC, for light-driven water splitting in dye sensitized photoelectrochemical cells. The resulting co-loaded organic chromophore plus catalyst surface assembly was evaluated by photocurrent transient measurement and direct O-2 detection using a collector-generator cell. The complete SnO2/TiO2 core-shell-based photoanode exhibited an enhanced photocurrent (similar to 38 pA cm(-2)) compared to that with only the chromophore pA cm(-2)). A modest Faradaic efficiency of 12% was recorded for O-2 generation under 1 sun illumination in pH 3.9, 0.1 M acetate buffer solutions.
more