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Zhu, Yang,Nakanishi, Takahiro,Kanamori, Kazuyoshi,Nakanishi, Kazuki,Ichii, Shun,Iwaida, Kohji,Masui, Yu,Kamei, Toshiyuki,Shimada, Toyoshi,Kumamoto, Akihito,Ikuhara, Yumi H.,Jeon, Mina,Hasegawa, George American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.1
<P>Multifunctional catalysts are of great interest in catalysis because their multiple types of catalytic or functional groups can cooperatively promote catalytic transformations better than their constituents do individually. Herein we report a new synthetic route involving the surface functionalization of nanoporous silica with a rationally designed and synthesized dihydrosilane (3-aminopropylmethylsilane) that leads to the introduction of catalytically active grafted organoamine as well as single metal atoms and ultrasmall Pd or Ag-doped Pd nanoparticles via on-site reduction of metal ions. The resulting nanomaterials serve as highly effective bifunctional dehydrogenative catalysts for generation of H-2 from formic acid.</P>
Particle Capture Reaction using Extended Core Plus Valence Nucleon Model
K. Yamamoto,H. Masui,M. Ohta,K. Kato 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
We investigate the ^(17)O(n,γ)^(18)O capture reaction cross section at the astrophysical energy using a microscopic ^(16)O+n+n model. The data of this reaction cross section for the s-process nucleosynthesis becomes important. The ^(17)O(n,γ)^(18)O reaction cross section is not measured by the experiment, because the natural abundance of <sup>17</sup>O is the 0.038%. We consider that it is necessary to estimate the ^(17)O(n,γ)^(18)O reaction cross section by a theoretical approach. In this paper, we apply the available wave function obtained by the microscopic ^(16)O+n+n model to the estimation of the ^(17)O(n,γ)^(18)O reaction cross section.
Electronic state of MgB2 superconductor
S.Tajima,T.Masui,H.Uchiyama,J.W.Quilty,Yu.Eltsev,S.Lee,A.Yamamoto,H.Mori 한국물리학회 2002 Current Applied Physics Vol.2 No.4
Thanks to the high quality single crystals of MgB2, we have measured various physical properties to extract important features ofthe electronic state in this superconductor. The electron density maps calculated from a precise X-ray diraction analysis and theband dispersions determined by the angle-resolved photoemission spectroscopy demonstrate that the boron orbitals play a centraldicated in resistivity and Raman scattering spectra. Although the multi-band structure signicantly aects various normal stateproperties, no clear multi-gap feature can be observed in the Raman scattering spectra belowTc.. 2002 Elsevier Science B.V. All rights reserved.