NO2 Detection Mechanism for Oxide-Carbon Nanotubes Composite Sensor

• Project/Area Number: 19681012
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Ritsumeikan University
• Principal Investigator: HASHISHIN Takeshi Ritsumeikan University, 生命科学部応用化学科, 助教 (20336184)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥23,660,000 (Direct Cost: ¥18,200,000、Indirect Cost: ¥5,460,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥22,230,000 (Direct Cost: ¥17,100,000、Indirect Cost: ¥5,130,000)
• Keywords: CNT-酸化物センサ / NO2吸着 / p-n接合 / 空間電荷層 / NO_2吸着 / P-n接合 / 酸化物-カーボンナノチューブ複合体 / 電子濃度分布

Research Abstract

p型半導体であるカーボンナノチューブ(CNT)にn型半導体である酸化タングステン(WO3)、酸化スズ(SnO2)などの酸化物を微量添加した時に、p-n接合の形成にともない電荷が存在しない空間電荷層が半導体表面に形成される。NO2などの酸化性ガスがその空間電荷層に吸着するとホールが注入され、電気抵抗が減少することを明らかにした。また、酸化物をCNTの筒の内側に導入することで、NO2の吸着量が大幅に増加することを見出した。

Research Products

• [Journal Article] Conductivity-Type Sensor Based on CNT-WO3 Composite for NO2 Detection (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Journal Title: J. Nanomaterials 352854 Pages: 4-4
  • Peer Reviewed
• [Journal Article] Ultrahigh-sensitive WO3 nanosensor with interdigitated Au nano-electrode for NO2 detection (2008)
  • Author(s): J. Tamaki, T. Hashishin, Y. Uno, D. V. Dao, S. Sugiyama
  • Journal Title: Sens. Actuators B 132 Pages: 234-238
  • Peer Reviewed
• [Journal Article] Au-Pd Catalyzed Growth of Carbon Nanofibers Mat (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Journal Title: Mater. Chem. Phys. 111 Pages: 54-58
  • Peer Reviewed
• [Journal Article] カーボンナノチューブを用いた抵抗型ガスセンサ (2008)
  • Author(s): 橋新剛
  • Journal Title: 化学センサ2007(ナノ化学センサ特集) 24 Pages: 36-42
  • Peer Reviewed
• [Journal Article] Nanocomposites of oxide nanoparticles and carbon nanotubes for gas sensor (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Journal Title: Proc. of 16th International Conference of Composite Engineering Pages: 417-418
  • Peer Reviewed
• [Journal Article] Conductivity-Type Sensor Based on CNT-WO_3 Composite for NO_2 Detection (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Journal Title: J. Nanomaterials 2008 Pages: 352854-352854
  • Peer Reviewed
• [Journal Article] Ultrahigh-sensitive WO_3 nanosensor with interdigitated Au nano-electrode for NO_2 detection (2008)
  • Author(s): J. Tamaki, T. Hashishin. Y. Uno, D. V. Dao, S. Sugiyama
  • Journal Title: Sens. Actuators B 132 Pages: 234-238
  • Peer Reviewed
• [Journal Article] Au-Pd Catalyzed Growth of Carbon Nanofibers Mat (2008)
  • Author(s): T. Hashishin. J. Tamaki
  • Journal Title: Mater. Chem. Phys. 111 Pages: 54-58
  • Peer Reviewed
• [Journal Article] Nanocomposites of oxide nanoparticles and carbon nanotubes for gas sensor (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Journal Title: Proc. of 16^<th> International Conference of Composite Engineering 24 Pages: 417-418
  • Peer Reviewed
• [Journal Article] Ultrahigh-sensitive WO_3 nanosensor with interdigitated Au nano-electrode for NO_2 detection (2008)
  • Author(s): J. Tamaki, T. Hashishin, Y. Uno, D. V. Dao, S. Sugiyama
  • Journal Title: Sens. Actuators B (In press)
  • Peer Reviewed
• [Presentation] 酸化スズ修飾多層カーボンナノチューブのNO2検知特性 (2009)
  • Author(s): 橋新剛, 岸孝宏, 玉置純
  • Organizer: ナノ学会第7回大会
  • Place of Presentation: 東京大学武田先端知ビル
  • Year and Date: 2009-05-11
• [Presentation] 酸化スズ修飾多層カーボンナノチューブのNO_2検知特性 (2009)
  • Author(s): 橋新剛, 岸孝宏, 玉置純
  • Organizer: ナノ学会第7回大会
  • Place of Presentation: 東京大学先端知ビル
  • Year and Date: 2009-05-11
• [Presentation] Chemical modification of carbon nanotubes for NO_2 detection (Invited) (2009)
  • Author(s): T. Hashishin
  • Organizer: The 4^<th> Vietnamese & Japanese Students Scientific Exchange Conference
  • Place of Presentation: Kyoto Univ. Yoshida Campus
  • Year and Date: 2009-05-11
• [Presentation] 酸化物内包多層カーボンナノチューブの二酸化窒素検知特性 (2009)
  • Author(s): 橋新剛, 岸孝宏, 玉置純
  • Organizer: 第47回化学センサ研究発表会(電気化学会第76回大会)
  • Place of Presentation: 京都大学吉田キャンパス
  • Year and Date: 2009-03-29
• [Presentation] Controlling Growth of Vertically Aligned MWNT by PECVD (2008)
  • Author(s): T. Tsuda, T. Hashishin, J. Tamaki
  • Organizer: IUMRS-ICA2008
  • Place of Presentation: Nagoya International Congress
  • Year and Date: 2008-12-10
• [Presentation] Controlling. Growth of Vertically Aligned MWNT by PECVD (2008)
  • Author(s): T. Tsuda, T. Hashishin, J. Tamaki
  • Organizer: IUMRS-ICA2008
  • Place of Presentation: Nagoya International Congress
  • Year and Date: 2008-12-10
• [Presentation] SnO2-MWNT複合化センサのNO2吸着特性に及ぼすSnO2担持状態の影響 (2008)
  • Author(s): 橋新剛, 岸孝宏, 玉置純
  • Organizer: 日本セラミックス協会関西支部平成20年度支部セミナ-シーズ/ニーズのマッチングによる新たな展開を求めて-
  • Place of Presentation: 京都大学ローム記念館
  • Year and Date: 2008-11-21
• [Presentation] SnO_2-MWNT複合化センサのNO_2吸着特性に及ぼすSnO_2担持状態の影響 (2008)
  • Author(s): 橋新剛, 岸孝宏, 玉置純
  • Organizer: 日本セラミックス協会関西支部平成20年度支部セミナーシーズ/ニーズのマッチングによる新たな展開を求めて-
  • Place of Presentation: 京都大学ローム記念館
  • Year and Date: 2008-11-21
• [Presentation] Chemical modification of carbon nanotubes for NO2 detection (2008)
  • Author(s): T. Hashishin
  • Organizer: The 4th Vietnamese & Japanese Students Scientific Exchange Conference
  • Place of Presentation: Kyoto Univ. Yoshida Campus
  • Year and Date: 2008-11-15
• [Presentation] Tin Oxide Nanoparticles Deposited Inside Multiwalled Carbon Nanotubes for Sensor Application (2008)
  • Author(s): T. Kishi, T. Hashishin, J. Tamaki
  • Organizer: PRiME2008
  • Place of Presentation: Waikiki, Hawai
  • Year and Date: 2008-10-12
• [Presentation] Tin Oxide Nanoparticles Deposited Inside Multiwalled Carbon Nanotubes for Sensor Application (2008)
  • Author(s): T. Kishi. T. Hashishin. J. Tamaki
  • Organizer: PRiME2008
  • Place of Presentation: ワイキキ(ハワイ)
  • Year and Date: 2008-10-12
• [Presentation] Nanocomposites of carbon nanotubes and oxides for sensor application (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Organizer: The 16th International Conference of Composites Engineering
  • Place of Presentation: Kunming, China
  • Year and Date: 2008-07-22
• [Presentation] Nano- composites of carbon nanotubes and oxides for sensor application (2008)
  • Author(s): T. Hashishin, J. Tamaki
  • Organizer: The 16^<th> International Conference of Composites Engineering
  • Place of Presentation: 昆明(中国)
  • Year and Date: 2008-07-22