Mass production of semiconducting atomic-layer materials

• Project/Area Number: 24656028
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: Tohoku University
• Principal Investigator: FUJITA Takeshi 東北大学, 原子分子材料科学高等研究機構, 准教授 (90363382)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 単層材料 / 水素発生触媒 / 電子顕微鏡 / 触媒 / グラフェン

Research Abstract

Chemical exfoliation of MoS2 and WS2 by using lithium intercalation has been investigated to make atomic-layer materials for efficient mass production. The structural analysis for exfoliated materials was performed by transmission electron microscope, and the coherent interface of metallic phase (1T) and semiconducting phase (2H) was clarified. In the WS2 atomic-layer sample, the metallic superlattice phase (1T') showing the mazing lattice patterns was found. The exfoliated WS2 and MoS2 atomic-layer samples have high catalytic capability of hydrogen evolution reaction, compatible to that of Pt. This high catalytic activity comes from the conducting metallic phase (1T) and the active sites from local strain induced by the superlattice.

Research Products

• [Journal Article] High quality three dimensional nanoporous graphene (2014)
  • Author(s): Y. Ito, Y. Tanabe, H-J. Qiu, K. Sugawara, S. Heguri, N. H. Tu, K. Kim Huynh, T. Fujita, T. Takahashi, K. Tanigaki, M. W. Chen
  • Journal Title: Angew. Chem. Int. Ed. Volume: 126 Issue: 19 Pages: 4922-4926
  • DOI: 10.1002/ange.201402662
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High-Quality Three-dimensional Nanoporous Graphene (2014)
  • Author(s): Y. Ito, Y. Tanabe, H. J. Qiu, K. Sugawara, S. Heguri, N. H. Tu, K. K. Huynh, T. Fujita, T. Takahashi, K. Tanigaki, M. W. Chen
  • Journal Title: Angewandte Chemie International Edition Volume: 126 Issue: 19 Pages: 141-145
  • DOI: 10.1002/anie.201402662
  • Peer Reviewed
• [Journal Article] Conducting MoS_2 Nanosheets as Catalysts for Hydrogen Evolution Reaction (2013)
  • Author(s): D. Voiry, M. Salehi, R. Silva, T. Fujita, M. W. Chen, T. Asefa, V. B. Shenoy, G. Eda, M. Chhowalla
  • Journal Title: Nano Letters Volume: 13 Issue: 12 Pages: 6222-6227
  • DOI: 10.1021/nl403661s
  • Peer Reviewed
• [Journal Article] Enhanced Catalytic Activity in Strained Chemically Exfoliated WS2 Nanosheets for Hydrogen Evolution (2013)
  • Author(s): D. Voiry, H. Yamaguchi, J. W. Li, R. Silve, D. C. B. Alves, T. Fujita, .M. W. Chen, T. Asefa, V. B. Shenoy, G. Eda, and M. Chhowalla
  • Journal Title: Nature Materials Volume: 12 Issue: 9 Pages: 850-855
  • DOI: 10.1038/nmat3700
  • Peer Reviewed
• [Journal Article] Coherent Atomic and Electronic Heterostructures of Single-Layer MoS_2 (2012)
  • Author(s): G. Eda, T. Fujita, H. Yamaguchi, D. Voiry, M. W. Chen, and M. Chhowalla
  • Journal Title: ACS Nano Volume: 6 Issue: 8 Pages: 7311-7317
  • DOI: 10.1021/nn302422x
  • Peer Reviewed
• [Presentation] 化学的剥離によるWS_2ナノシートの作製と水素発生反応触媒特性 (2014)
  • Author(s): 藤田武志, 陳明偉, Damien Voiry, 山口尚登, Manish Chhowalla, 江田剛輝
  • Organizer: 2014年日本金属学会第154回春期大会
  • Place of Presentation: 東京工業大学大岡山キャンパス
• [Presentation] 化学的剥離によるWS2ナノシートの作製と水素発生反応触媒特性 (2014)
  • Author(s): 藤田 武志、陳 明偉、Damien Voiry、山口尚登、Manish Chhowalla、江田 剛輝
  • Organizer: 日本金属学会 第154回春期大会
  • Place of Presentation: 東京都、東京工業大学 大岡山キャンパス
• [Remarks]
  • URL: http://www.wpi-aimr.tohoku.ac.jp/jp/research/researcher/fujita_t.html
• [Remarks] Takeshi Fujita Ph.D
  • URL: http://www.wpi-aimr.tohoku.ac.jp/en/research/researcher/t-fujita.html