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Watanabe J, Tanaka Y, Maeda Y, Harada Y, Hirokawa Y, Kawakita H, Ohto K, Morisada S. Surfactant-Assisted Synthesis of Pt Nanocubes Using Poly( N-isopropylacrylamide) Nanogels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11859-11868. [PMID: 34583506 DOI: 10.1021/acs.langmuir.1c01873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Poly(N-isopropylacrylamide) (PNIPAM) nanogels were prepared by emulsion polymerization using sodium dodecyl sulfate (SDS) and employed as a capping agent in platinum nanoparticle (Pt NP) synthesis by liquid-phase reduction with hydrogen gas. When the PNIPAM nanogels were used without removing SDS, that is, a slight amount of SDS was included in the reaction solution, Pt nanocubes (NCs) were predominantly produced (>80%). The proportion of the resultant Pt NCs was much higher than that obtained using the PNIPAM linear polymer (∼60%). To clarify the effects of the three-dimensional polymer network and SDS, we synthesized Pt NPs using the PNIPAM nanogel without SDS (SDS-free PNIPAM nanogel) and found that Pt NCs are rarely formed, and most NPs obtained have an irregular shape. When only SDS was used as a capping agent, NCs were hardly obtained, but other polyhedral NPs were formed. Furthermore, the use of SDS together with the PNIPAM polymer led to the decrease in the proportion of the Pt NCs compared with that obtained using only the linear polymer. These results indicate that the enhancement of the Pt NC proportion using the PNIPAM nanogel with SDS is attributable to not only the three-dimensional polymer network of the PNIPAM nanogel but also the assist of SDS as a capping agent.
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Affiliation(s)
- Jun Watanabe
- Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Yoshiaki Tanaka
- Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Yuusuke Maeda
- Department of Chemistry and Applied Chemistry, Saga University, 1 Honjo, Saga 840-8502, Japan
| | - Yusuke Harada
- Department of Chemistry and Applied Chemistry, Saga University, 1 Honjo, Saga 840-8502, Japan
| | - Yoshitsugu Hirokawa
- Department of Materials Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533, Japan
| | - Hidetaka Kawakita
- Department of Chemistry and Applied Chemistry, Saga University, 1 Honjo, Saga 840-8502, Japan
| | - Keisuke Ohto
- Department of Chemistry and Applied Chemistry, Saga University, 1 Honjo, Saga 840-8502, Japan
| | - Shintaro Morisada
- Department of Chemistry and Applied Chemistry, Saga University, 1 Honjo, Saga 840-8502, Japan
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Kato S, Ohyama J, Machida M, Satsuma A. Gas-phase synthesis of morphology-controlled Pt nanoparticles and their impact on cinnamaldehyde hydrogenation. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00158a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pt nanoparticles of which morphology is controlled by gas-phase synthesis using carbon monoxide as a protective agent show high catalytic activity and selectivity for cinnamaldehyde hydrogenation.
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Affiliation(s)
- Sosuke Kato
- Department of Materials Chemistry
- Graduate school of Engineering
- Nagoya University
- Nagoya
- Japan
| | - Junya Ohyama
- Faculty of Advanced Science and Technology
- Kumamoto University
- Kumamoto
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
| | - Masato Machida
- Faculty of Advanced Science and Technology
- Kumamoto University
- Kumamoto
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
| | - Atsushi Satsuma
- Department of Materials Chemistry
- Graduate school of Engineering
- Nagoya University
- Nagoya
- Japan
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Recent development of efficient electrocatalysts derived from porous organic polymers for oxygen reduction reaction. Sci China Chem 2017. [DOI: 10.1007/s11426-017-9078-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lu S, Eid K, Ge D, Guo J, Wang L, Wang H, Gu H. One-pot synthesis of PtRu nanodendrites as efficient catalysts for methanol oxidation reaction. NANOSCALE 2017; 9:1033-1039. [PMID: 28009900 DOI: 10.1039/c6nr08895c] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bimetallic Pt-based nanodendrites are of particular interest in various catalytic applications due to their high surface areas and low densities. Herein, we provide a facile method for one-pot synthesis of PtRu nanodendrites via the co-reduction of Pt and Ru precursors in oleylamine by H2. The as-fabricated PtRu nanodendrites exhibit superior catalytic activity and durability compared with PtRu nanocrystals (NCs), synthesized under the same reaction conditions, and the commercial Pt/C catalyst towards the methanol oxidation reaction (MOR).
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Affiliation(s)
- Shuanglong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P.R. China.
| | - Kamel Eid
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P.R. China.
| | - Danhua Ge
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P.R. China.
| | - Jun Guo
- Analysis and Testing Centre, Soochow University, Suzhou 215123, P.R. China
| | - Liang Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P.R. China.
| | - Hongjing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P.R. China.
| | - Hongwei Gu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P.R. China.
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