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Muratsugu S, Miyamoto S, Sakamoto K, Ichihashi K, Kim CK, Ishiguro N, Tada M. Size Regulation and Stability Enhancement of Pt Nanoparticle Catalyst via Polypyrrole Functionalization of Carbon-Nanotube-Supported Pt Tetranuclear Complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10271-10282. [PMID: 28933549 DOI: 10.1021/acs.langmuir.7b02114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel multiwall carbon nanotube (MWCNT) and polypyrrole (PPy) composite was found to be useful for preparing durable Pt nanoparticle catalysts of highly regulated sizes. A new pyrene-functionalized Pt4 complex was attached to the MWCNT surface which was functionalized with PPy matrix to yield Pt4 complex/PPy/MWCNT composites without decomposition of the Pt4 complex units. The attached Pt4 complexes in the composite were transformed into Pt0 nanoparticles with sizes of 1.0-1.3 nm at a Pt loading range of 2 to 4 wt %. The Pt nanoparticles in the composites were found to be active and durable catalysts for the N-alkylation of aniline with benzyl alcohol. In particular, the Pt nanoparticles with PPy matrix exhibited high catalyst durability in up to four repetitions of the catalyst recycling experiment compared with nonsize-regulated Pt nanoparticles prepared without PPy matrix. These results demonstrate that the PPy matrix act to regulate the size of Pt nanoparticles, and the PPy matrix also offers stability for repeated usage for Pt nanoparticle catalysis.
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Affiliation(s)
- Satoshi Muratsugu
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Shota Miyamoto
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Kana Sakamoto
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Kentaro Ichihashi
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Chang Kyu Kim
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Nozomu Ishiguro
- Element Visualization Team, Materials Visualization Photon Science Group, RIKEN SPring-8 Center, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
| | - Mizuki Tada
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University , Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Element Visualization Team, Materials Visualization Photon Science Group, RIKEN SPring-8 Center, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
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Chun WJ, Asakura K, Iwasawa Y. Polarization-Dependent Total-Reflection Fluorescence XAFS Study of Mo Oxides on a Rutile TiO2(110) Single Crystal Surface. J Phys Chem B 1998. [DOI: 10.1021/jp9820368] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wang-Jae Chun
- Department of Chemistry and Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kiyotaka Asakura
- Department of Chemistry and Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasuhiro Iwasawa
- Department of Chemistry and Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Asakura K, Chun WJ, Shirai M, Tomishige K, Iwasawa Y. In-Situ Polarization-Dependent Total-Reflection Fluorescence XAFS Studies on the Structure Transformation of Pt Clusters on α-Al2O3(0001). J Phys Chem B 1997. [DOI: 10.1021/jp970394p] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kiyotaka Asakura
- Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Institute for Chemical Reaction Science, Tohoku University, Katahira, Sendai 980-77, Japan, and Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Wang-Jae Chun
- Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Institute for Chemical Reaction Science, Tohoku University, Katahira, Sendai 980-77, Japan, and Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Masayuki Shirai
- Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Institute for Chemical Reaction Science, Tohoku University, Katahira, Sendai 980-77, Japan, and Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Keiichi Tomishige
- Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Institute for Chemical Reaction Science, Tohoku University, Katahira, Sendai 980-77, Japan, and Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
| | - Yasuhiro Iwasawa
- Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan, Institute for Chemical Reaction Science, Tohoku University, Katahira, Sendai 980-77, Japan, and Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
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