2019年12月16日日本京都大学Hiroshi Kitagawa教授学术报告

DOS Engineering for New Green Nano-Materials

发布人:夏雨人 责任审核人:陈文波 发布日期:2019-11-27
主题
DOS Engineering for New Green Nano-Materials
活动时间
-
活动地址
丰盛堂芙兰学术中心A101
主讲人
Hiroshi Kitagawa 教授(日本京都大学)
主持人
李光琴 教授

报告人简介:

       Hiroshi Kitagawa教授日本京都大学化学系教授,京都大学副校长国际杰出的纳米材料化学家。北川宏教授一直致力于分子导体、导电MOFMOFSurMOF的固态质子以及功能性纳米材料的研究。北川宏教授课题组目前在NatureScienceNature子刊等国际顶级期刊J. Am. Chem. Soc. Angew. Chem. Int. Ed.等一流期刊发表多篇论文,是当今MOF与纳米材料研究领域具有重要影响力的科学家之一。北川宏教授目前担任日本物理学会委员、日本放射光学会涉外委员、分子科学会运营委员、日本配位化学会副会长、英国皇家化学会会士(FRSC)、日本文部科学省科技学术审议会委员、日本学术振兴会科研费专门委员、文部科学省研究振兴局科学官、日本内阁府能源战略协会纳米技术委员以及经济产业省综合资源能源调查会委员。北川宏教授是固体介质中质子传导研究领域在世界上的两位创立者之一,同时于世界首创非互溶型固溶体合金的研究领域。曾获日本化学会学术奖、井上学术奖、马可波罗意大利科学奖、日本文部科学大臣表彰科学技术奖。

 

报告摘要:

 

       The property of element is correlated directly with its electron configuration. In a solid, the density of states (DOS) at the Fermi level affects the physical and chemical properties. The method of alloying elements has been used to improve the properties of materials for many years. In particular, the solidsolution-type alloy is advantageous because tuning the compositions and/or combinations of the constituent elements can continuously control the properties. However, the majority of bulk alloys are of the phase-separated type under ambient conditions, where constituent elements are immiscible with each other. To overcome the challenge of the bulk-phase metallurgical aspects, we have focused on the nanosize effect and developed methods involving “non-equilibrium synthesis” or “a process of hydrogen absorption/desorption”. We propose a new concept of “density-of-states engineering” for the design of materials having the most desirable and suitable properties by means of “inter-element fusion”. Novel solid-solution alloys of Pd-Pt, Ag-Rh, and Pd-Ru systems in which the constituent elements are immiscible in the bulk state are presented and discussed [1-4]. Our present work provides a guiding principle for the design of a suitable DOS shape according to the intended physical and/or chemical properties and a method for the development of novel solid-solution alloys [5-9].

[1] New Aspects of Platinum Group Metal-Based Solid-Solution Alloy Nanoparticles: Binary to High-Entropy Alloys,K. Kusada, D. Wu, H. Kitagawa, Chem. Eur. J., in press. Invited Review.

[2] Recent Progress in the Structure Control of Pd-Ru Bimetallic Nanomaterials, D. Wu, K. Kusada, H. Kitagawa, Science and Technology of Advanced Materials, 17, 583-596 (2016). Invited Review.

[3] A Route for Phase Control in Metal Nanoparticles: A Potential Strategy to Create Advanced Materials, K. Kusada and H. Kitagawa, Advanced Materials, 28, 1129-1142 (2016). Invited Review.

[4] Creation of Novel Solid-Solution Alloy Nanoparticles on the Basis of Density-of-States Engineering by Interelement FusionH. Kobayashi, K. Kusada, H. Kitagawa, Accounts of Chemical Research, 48, 1551-1559 (2015). Invited Review.

[5] Selective control of fcc and hcp crystal structures in Au-Ru solid-solution alloy nanoparticles, Q. Zhang, K. Kusada, D. Wu, T. Yamamoto, T. Toriyama, S. Matsumura, S. Kawaguchi, Y. Kubota, H. Kitagawa, Nature Communications, 9, 510 (2018).

[6] Solid-Solution Alloy Nanoparticles of the Immiscible Ir-Cu System with a Wide Composition Range for Enhanced Electrocatalytic Applications, F. Wang, K. Kusada, D. Wu, T. Yamamoto, T. Toriyama, S. Matsumura, Y. Nanba, M. Koyama, H. Kitagawa, Angew. Chem. Int. Ed., 57, 4505-4509 (2018).

[7] Copper Substitution Induced CO Adsorption Site Change of a Ruthenium Catalyst for Highly Enhanced CO Oxidation Activity, B. Huang, H. Kobayashi, T. Yamamoto, T. Toriyama, S. Matsumura, Y. Nishida, K. Sato, K. Nagaoka, M. Haneda, W. Xie, Y. Nanba, M. Koyama, F. Wang, S. Kawaguchi, Y. Kubota, H. Kitagawa, Angew. Chem. Int. Ed., 57, 1-6 (2018).

[8] Emergence of High ORR Activity through Controlling Local Density-of-States by Alloying Immiscible Au and Ir, K. Kusada, D. Wu, T. Yamamoto, T. Toriyama, S. Matsumura, W. Xie, M. Koyama, S. Kawaguchi, Y. Kubota, H. Kitagawa, Chemical Science, 10, 652-656 (2019).

[9] Rational Synthesis Method for a Noble Metal Carbide, T. Wakisaka, K. Kusada, D. Wu, Dongshuang; T. Yamamoto, T. Toriyama, S. Matsumura, H. Akiba, O. Yamamuro,K. Ikeda, T. Otomo, Toshiya; N. Mueller, Y. Chen, L. Kumara, C. Song, O. Sakata, W. Xie, M. Koyama, Y. Kubota, S. Kawaguchi, R. Arevalo, S. Aspera, E. Arguelles, H. Nakanishi, H. Kitagawa, J. Am. Chem. Soc., in press.