Development of a photoelectrochemical cell for artificial photosynthetic H2O and CO2 reduction to form syngas under sunlight

• Project/Area Number: 16K17948
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Energy-related chemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Takayama Tomoaki 東京工業大学, 理学院, 助教 (40760369)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 二酸化炭素の還元 / 人工光合成 / 光電気化学セル / 合成ガス生成 / 導電性有機ポリマー / 表面修飾 / Ag助触媒 / 金属硫化物光触媒 / CO2還元 / 合成ガス / 光電極 / 金属硫化物 / 有機導電性ポリマー / 再生可能エネルギー / 新エネルギー / 触媒・化学プロセス

Outline of Final Research Achievements

The activity of a Cu0.8Ag0.2GaS2 photocathode for H2O and CO2 reduction was drastically improved by comodification with Ag and ZnS. Additionally, the conductive organic polymer necking that formed between the metal sulfide photocatalyst particles and a substrate improved the photoelectrochemical performances of the metal sulfide photocathodes. Photoelectrochemical cells for artificial photosynthetic H2O and CO2 reduction to form syngas in an aqueous solution under simulated sunlight have been successfully developed by combining the photocathode and a CoO-loaded BiVO4 photoanode.

Research Products

• [Presentation] PHOTOELECTROCHEMICAL WATER SPLITTING AND CO2 REDUCTION USING METAL SULFIDE PHOTOCATHODES MODIFIED WITH ORGANIC CONDUCTIVE POLYMERS (2017)
  • Author(s): Tomoaki Takayama, Akihide Iwase, Akihiko Kudo
  • Organizer: 2017 International Conference on Artificial Photosynthesis (ICARP 2017)
  • Place of Presentation: Japan (Ritsumeikan Univ., Kyoto)
  • Year and Date: 2017-03-03
  • Int'l Joint Research
• [Presentation] 種々の導電性有機ポリマーで修飾した金属硫化物光カソードを用いたCO2還元反応 (2016)
  • Author(s): 高山大鑑，岩瀬顕秀，工藤昭彦
  • Organizer: 第118回触媒討論会
  • Place of Presentation: 岩手（岩手大学）
  • Year and Date: 2016-09-23
• [Presentation] 太陽光を利用してCO2を固定化するための人工光合成型光電気化学セルの開発 (2016)
  • Author(s): 高山大鑑，岩瀬顕秀，工藤昭彦
  • Organizer: 第5回JACI/GSCシンポジウム
  • Place of Presentation: 兵庫（ANAクラウンプラザホテル神戸）
  • Year and Date: 2016-06-02