Preparation of no amphiphilic monolayer and orientation control of metal catalyst nanoparticles

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656199
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: Chiba University
• Principal Investigator: KUSHIDA Masahito 千葉大学, 工学(系)研究科(研究院), 准教授 (70177989)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 燃料電池 / 金属ナノ粒子 / カーボンナノチューブ / 単分子膜 / 低炭素 / 水素燃料 / 配列制御 / 分子エレクトロニクス

Outline of Final Research Achievements

Independently controlling the number density and diameter of Fe nanoparticles (FeNPs) used as a catalyst for vertically aligned carbon nanotube (VA-CNT) growth is difficult by conventional methods. In this study, mixed solutions of no amphiphilic FeNPs and saturated fatty acid used as filler molecules were prepared to prevent the thermal aggregation of FeNPs and control the number density of VA-CNTs. FeNPs mixed with saturated fatty acid monolayer films were prepared on the water surface and deposited on SiO2/Si substrates by the Langmuir-Blodgett (LB) technique. VA-CNTs were synthesized by a thermal chemical vapor deposition method using acetylene gas. By controlling the ratio of FeNP catalyst to saturated fatty acid as a filler molecule in the LB film and optimizing hydrogen reduction condition, we were able to control the number density and diameter of FeNPs independently.

Free Research Field

有機超薄膜の電気物性工学