Scavenging and immobilization of Cesium with nanostructure-controlled Titanates

• Project/Area Number: 26420874
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: National Institute for Materials Science
• Principal Investigator: Hideki Abe 国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究拠点, 主席研究員 (60354156)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 放射性廃棄物 / セシウム / ナノシート / 捕集 / 固化体 / 閉じ込め / 吸着 / チタン酸 / 電気分解 / 熔融塩 / 安定閉じ込め / 一貫プロセス

Outline of Final Research Achievements

Cesium ions (Cs+) were successfully scavenged out of aqueous solution with nanosheet materials comprising an ion-exchenged pottasium titanate (K2Ti2O5) and further immobilized in the form of a crystalline cesium titanate (CsxTi8O16) via electorolytic processes in molten molybdate (MoO3) salts. The developed process involving the Cs ion scavenging through solidification in crystalline titanates can be applied to the backend of radioactive wastes of light-water reactors.

Research Products

• [Journal Article] Tailoring the surface-oxygen defects of a tin dioxide support towards an enhanced electrocatalytic performance of platinum nanoparticles (2016)
  • Author(s): M. Manikandan, T. Tanabe, V. GUBBALA, R. KODIYATH, S. Ueda, Y. Sakuma, Y. Homma, Arivuoli Dakshanamoorthy, K. Ariga, H. Abe
  • Journal Title: Phys. Chem. Chem. Phys Volume: 18 Issue: 8 Pages: 5932-5937
  • DOI: 10.1039/c5cp04714e
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Activated interiors of clay nanotubes for agglomeration-tolerant automotive exhaust remediation (2015)
  • Author(s): S.B. Noelia Maria, V. GUBBALA, Toyokazu Tanabe, Eva Koudelkova, J. Liu, L. K. Shrestha, Yuri Lvov, J. Hill, K. Ariga, H. Abe
  • Journal Title: J. Mater. Chem Volume: 3 Issue: 12 Pages: 6614-6619
  • DOI: 10.1039/c4ta06966h
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Low-temperature remediation of NO catalyzed by interleaved CuO nanoplates (2014)
  • Author(s): M. Francis, S. Ishihara, S. Mandal, T. Tanabe, G. Saravanan, V. GUBBALA, N. Umezawa, T. Hara, Y. Xu, S. Hishita, Y. Yamauchi, Arivuoli Dakshanamoorthy, J. Hill, K. Ariga, H. Abe
  • Journal Title: Advanced Materials Volume: 26 Issue: 26 Pages: 4481-4485
  • DOI: 10.1002/adma.201306055
  • Peer Reviewed / Open Access
• [Presentation] Facet-engineered Copper Oxides Rival Precious-group-metal (PGM) Catalysts for Exhaust Purification (2014)
  • Author(s): H. Abe, S. Ishihara, K. Ariga
  • Organizer: The Workshop on Clean Tech - Water Treatment and Air Purificatio
  • Place of Presentation: 蘇州（中国）
  • Year and Date: 2014-09-25
  • Invited
• [Presentation] Development of Copper(II) Oxide Nanoarchitecture with Maximized {001} Facet for Catalytic Remediation of Nitrogen Monoxide at Low Temperature (2014)
  • Author(s): S. Ishihara, M. Francis, S. Mandal, J. Hill, K. Ariga, H. Abe
  • Organizer: The 15th IUMRS-International Conference in Asia
  • Place of Presentation: 福岡大学（福岡県・福岡市）
  • Year and Date: 2014-08-24 – 2014-08-30