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Journal Articles

Composite with a glassy nonporous coordination polymer enhances gas adsorption selectivity

Zheng, X.*; Kato, Masaru*; Uemura, Yohei*; Matsumura, Daiju; Yagi, Ichizo*; Takahashi, Kiyonori*; Noro, Shinichiro*; Nakamura, Takayoshi*

Inorganic Chemistry, 62(3), p.1257 - 1263, 2023/01

 Times Cited Count:0 Percentile:63.13(Chemistry, Inorganic & Nuclear)

Journal Articles

Dust behavior during laser cutting in huge water tank

Miyamoto, Yuta; Uemura, Masaru*; Yoshikawa, Katsuhiro*; Ando, Seiji*

Reiwa-2-Nendo Koeki Zaidan Hojin Wakasawan Enerugi Kenkyu Senta kenkyu Nempo, 23, P. 40, 2021/10

no abstracts in English

Journal Articles

Electronic effects of nitrogen atoms of supports on Pt-Ni rhombic dodecahedral nanoframes for oxygen reduction

Kato, Masaru*; Nakahoshiba, Ryota*; Ogura, Kazuya*; Tokuda, Shoichi*; Yasuda, Satoshi; Higashi, Kotaro*; Uruga, Tomoya*; Uemura, Yohei*; Yagi, Ichizo*

ACS Applied Energy Materials (Internet), 3(7), p.6768 - 6774, 2020/07

To understand electronic effects of nitrogen-doped and polymer-coated carbon supports on the catalytic activity of Pt-based nanostructured catalysts, we prepared Pt$$_{3}$$Ni nanoframes (NFs) supported on polybenzimidazole (PBI)-coated and uncoated carbon nanotubes for the oxygen reduction reaction (ORR), and then compared their catalytic activities and electronic properties with those of NFs immobilized on nitrogen-doped and undoped carbon supports. Although both PBI-coating and nitrogen-doping approaches improved the catalytic activity of NFs, ${it ex situ}$ X-ray photoelectron spectroscopy and ${it in situ}$ X-ray absorption spectroscopy revealed that nitrogen doping showed electronic effects on NFs, whereas PBI-coating showed almost no impact on the electronic state of NFs but stabilized Pt(OH)$$_{rm ad}$$ species under electrochemical conditions. Our studies demonstrate that difference in microscopic environments of nitrogen atoms at the catalyst/support interface is highly sensitive to the electronic effects of supports on Pt-based electrocatalysts.

Journal Articles

Incorporation of multinuclear copper active sites into nitrogen-doped graphene for electrochemical oxygen reduction

Kato, Masaru*; Muto, Marika*; Matsubara, Naohiro*; Uemura, Yohei*; Wakisaka, Yuki*; Yoneuchi, Tsubasa*; Matsumura, Daiju; Ishibara, Tomoko*; Tokushima, Takashi*; Noro, Shinichiro*; et al.

ACS Applied Energy Materials (Internet), 1(5), p.2358 - 2364, 2018/05

 Times Cited Count:11 Percentile:43.85(Chemistry, Physical)

Oral presentation

Contents of underwater laser cutting test

Uemura, Masaru*

no journal, , 

no abstracts in English

5 (Records 1-5 displayed on this page)
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