Synthesis of Ti4O7 Nanoparticles by Carbothermal Reduction Using Microwave Rapid Heating

Catalysts

Hirotsugu Takizawa¹  Tomohiro Takeuchi¹  Jun Fukushima¹  Yamato Hayashi¹ 

[1] Department of Engineering, Tohoku University, 6-6-07, Aoba Aramaki, Sendai 980-8579, Miyagi, Japan;

关键词: Ti4O7;    nanoparticles;    catalyst support;    polymer electrolyte fuel cell;    microwave heating;    carbothermal reduction;   

DOI  :  10.3390/catal7020065

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown