Biological Construction of Single-Walled Carbon Nanotube Electron Transfer Pathways in Dye-Sensitized Solar Cells
| Autor: | Kiyoshi Watanabe, Yasuaki Ishikawa, Hirofumi Yamauchi, Hisashi Yasueda, Ippei Inoue, Ichiro Yamashita, Yukiharu Uraoka |
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| Rok vydání: | 2014 |
| Předmět: |
Anatase
Materials science Photochemistry General Chemical Engineering Nanotechnology Carbon nanotube Spectrum Analysis Raman Nanocomposites law.invention Electron transfer Bacterial Proteins Microscopy Electron Transmission law Solar cell Solar Energy Environmental Chemistry General Materials Science Coloring Agents Titanium Nanocomposite Electrochemical Techniques Anode DNA-Binding Proteins Dye-sensitized solar cell General Energy Chemical engineering Electrode |
| Zdroj: | ChemSusChem. 7:2805-2810 |
| ISSN: | 1864-5631 |
| Popis: | We designed and mass-produced a versatile protein supramolecule that can be used to manufacture a highly efficient dye-sensitized solar cell (DSSC). Twelve single-walled carbon-nanotube (SWNT)-binding and titanium-mineralizing peptides were genetically integrated on a cage-shaped dodecamer protein (CDT1). A process involving simple mixing of highly conductive SWNTs with CDT1 followed by TiO2 biomineralization produces a high surface-area/weight TiO2 -(anatase)-coated intact SWNT nanocomposite under environmentally friendly conditions. A DSSC with a TiO2 photoelectrode containing 0.2 wt % of the SWNT-TiO2 nanocomposite shows a current density improvement by 80% and a doubling of the photoelectric conversion efficiency. The SWNT-TiO2 nanocomposite transfers photon-generated electrons from dye molecules adsorbed on the TiO2 to the anode electrode swiftly. |
| Databáze: | OpenAIRE |
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