Development of thermal- and photo-chemical hybrid hydrogen production process

• Project/Area Number: 24686107
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Energy engineering
• Research Institution: Kyushu University
• Principal Investigator: HAGIWARA Hidehisa 九州大学, 工学(系)研究科(研究院), 助教 (30574793)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2012: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
• Keywords: ISプロセス / 水素 / 光触媒 / 水分解

Outline of Final Research Achievements

Recently, hydrogen production from water decomposition has been actively studied to solve the energy issues. IS process, which is one of the thermochemical hydrogen production processes, consists of three chemical reactions: sulfuric acid decomposition, hydrogen iodide (HI) decomposition, and bunsen reaction. In this study, photocatalytic HI decomposition was investigated to improve reaction rate of the HI decomposition. This study revealed that potassium tantalate (KTaO3) showed relatively high photocatalytic activity for HI decomposition and Pt and Pd cocatalysts effectively improve the photocatalytic HI decomposition activity because of the acceleration of iodide ion oxidation.

Research Products

• [Journal Article] Modification Effect of meso-Hexakis(pentafluorophenyl) [26]Hexaphyrin Aggregates on the Photocatalytic Water Splitting (2014)
  • Author(s): Hidehisa Hagiwara, Motonori Watanabe, Takeshi Daio, Shintaro Ida and Tatsumi Ishihara
  • Journal Title: Chemical Communications Volume: 50 Issue: 83 Pages: 12515-12518
  • DOI: 10.1039/c4cc05127k
  • Peer Reviewed
• [Journal Article] Fabrication of an oxysulfide of bismuth Bi2O2S and its photocatalytic activity in a Bi2O2S/In2O3 composite (2014)
  • Author(s): Pacquette, A.L., Hagiwara, H., Ishihara, T., Gewirth, A.A.
  • Journal Title: Journal of Photochemistry and Photobiology A: Chemistry Volume: 277 Pages: 27-36
  • DOI: 10.1016/j.jphotochem.2013.12.007
  • Peer Reviewed
• [Journal Article] Spacer Effects in Metal-Free Organic Dyes for Visible-Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production (2014)
  • Author(s): Watanabe, M., Hagiwara, H., Iribe, A., Ogata, Y., Shiomi, K., Staykov, A., Ida, S., Tanaka, K., Ishihara, T.
  • Journal Title: Journal of Materials Chemistry A Volume: 2 Issue: 32 Pages: 12952-12961
  • DOI: 10.1039/c4ta02720e
  • Peer Reviewed
• [Journal Article] In situ carbonization of a soft-template to directly synthesize crystalline mesoporous metal oxides with high surface areas (2014)
  • Author(s): Guo, L., Ida, S., Daio, T., Hagiwara, H., Ishihara, T.
  • Journal Title: New Journal of Chemistry Volume: 38 Issue: 12 Pages: 5846-5855
  • DOI: 10.1039/c4nj01034e
  • Peer Reviewed
• [Journal Article] Direct soft-templating route to crystalline mesoporous transition-metal oxides (2014)
  • Author(s): Guo, L., Ida, S., Hagiwara, H., Daio, T., Ishihara, T.
  • Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects Volume: 451 Pages: 136-143
  • DOI: 10.1016/j.colsurfa.2014.03.059
  • Peer Reviewed
• [Presentation] 光触媒によるヨウ化水素水溶液からの水素生成反応 (2015)
  • Author(s): 萩原英久・伊田進太郎・石原達己
  • Organizer: 石油学会 第64回研究発表会
  • Place of Presentation: タワーホール船堀
  • Year and Date: 2015-05-26 – 2015-05-27
• [Presentation] 光触媒によるヨウ化水素水溶液からの水素生成反応 (2015)
  • Author(s): 萩原英久・伊田進太郎・石原達己
  • Organizer: 日本化学会第95春季年会
  • Place of Presentation: 日本大学
  • Year and Date: 2015-03-26 – 2015-03-29
• [Presentation] 光触媒によるヨウ化水素水溶液からの水素生成反応(3) 助触媒の効果 (2015)
  • Author(s): 萩原英久・柿木亮太・酒井孝明・伊田進太郎・石原達己
  • Organizer: 第115回触媒討論会
  • Place of Presentation: 成蹊大学
  • Year and Date: 2015-03-23 – 2015-03-24
• [Presentation] 光触媒によるヨウ化水素水溶液からの水素生成反応(2)Ta系複合酸化物の光触媒活性 (2014)
  • Author(s): 萩原英久・酒井孝明・伊田進太郎・石原達己
  • Organizer: 第114回触媒討論会
  • Place of Presentation: 広島大学東広島キャンパス
  • Year and Date: 2014-09-25 – 2014-09-27
• [Presentation] 光触媒によるヨウ化水素水溶液からの水素生成反応 (2014)
  • Author(s): 萩原英久・酒井孝明・伊田進太郎・石原達己
  • Organizer: 第113回触媒討論会
  • Place of Presentation: ロワジールホテル豊橋（愛知県豊橋市）
• [Remarks]
  • URL: http://www.cstf.kyushu-u.sc.jp/~ishihara-lab/index2.html