Enhanced Hydrogen Storage Ability of Palladium Nanodisks induced by Visible-to-Near Infrared Plasmons

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K13978
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Kyoto University
• Principal Investigator: Teranishi Toshiharu 京都大学, 化学研究所, 教授 (50262598)
• Research Collaborator: YAMAUCHI Miho 九州大学, カーボンニュートラル・エネルギー国際研究所, 教授 (10372749) ; LI Yanhui
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: ナノ粒子 / コロイド / パラジウム / ディスク / 結晶構造 / 水素吸蔵 / プラズモン

Outline of Final Research Achievements

Insertion of carbon atoms into the Pd nanodisks was carried out to confirm the plasmon peak shift by dissolving another element into the Pd nanodisks. When the Pd nanodisks of 79 ± 16 nm in side and 23 ± 3.2 nm in thickness were reacted with trimethylamine-N-oxide, an insertion of carbon atoms into the lattices of Pd nanodisks was observed. By changing the reaction conditions, the Pd sublattices were found to possess either a hexagonal close-packed structure or a cubic close-packed structure. Furthermore, it was found that the change in the dielectric constant of the Pd nanodisks by the carbon insertion induced the red-shift of the plasmon peak. This result means that the light irradiation with longer wavelength than the plasmon peak of Pd nanodisk is necessary for enhancing the hydrogen storage ability.

Free Research Field

無機化学