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Catalysts 2017, 7(2), 65; doi:10.3390/catal7020065

Synthesis of Ti4O7 Nanoparticles by Carbothermal Reduction Using Microwave Rapid Heating

Department of Engineering, Tohoku University, 6-6-07, Aoba Aramaki, Sendai 980-8579, Miyagi, Japan
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Received: 14 December 2016 / Accepted: 13 February 2017 / Published: 16 February 2017
(This article belongs to the Special Issue Enabling Technologies toward Green Catalysis)
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Abstract

The polymer electrolyte fuel cell (PEFC) is an attractive power generation method from the perspective of environmental protection. Carbon is usually used as a catalyst support in PEFC, but it is oxidized under high electrical potential conditions. Ti4O7 is expected as a new catalyst support because of its high electrical conductivity and chemical resistivity. Though Ti4O7 as a catalyst support must have a high specific surface area for a high performance, it is difficult to synthesize nanostructured Ti4O7. In this research, Ti4O7 nanoparticles with a size of about 60 nm were synthesized by carbothermal reduction of TiO2 nanoparticles with polyvinylpyrrolidone (carbon source) using 2.45 GHz microwave irradiation. The experiment condition was at 950 °C for 30 min and the samples synthesized by conventional heating showed a grain growth. The findings of this study suggest that microwave processing can drastically reduce the total processing time for the synthesis of nanostructured Ti4O7. View Full-Text
Keywords: Ti4O7; nanoparticles; catalyst support; polymer electrolyte fuel cell; microwave heating; carbothermal reduction Ti4O7; nanoparticles; catalyst support; polymer electrolyte fuel cell; microwave heating; carbothermal reduction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Takeuchi, T.; Fukushima, J.; Hayashi, Y.; Takizawa, H. Synthesis of Ti4O7 Nanoparticles by Carbothermal Reduction Using Microwave Rapid Heating. Catalysts 2017, 7, 65.

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