Synthesis and characterization of pyrochlore-type yttrium titanate nanoparticles by modified sol�?�gel method

Bulletin of materials science

T F Chen¹  S L Li¹  Z S Chen³  W P Gong² 

[1] State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$;State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Electronic Science Department, Huizhou University, Huizhou, Guangdong 516001, P.R. China$$State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Electronic Science Department, Huizhou University, Huizhou, Guangdong 516001, P.R. China$$Electronic Science Department, Huizhou University, Huizhou, Guangdong 516001, P.R. ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Electronic Science Department, Huizhou University, Huizhou, Guangdong 516001, P.R. China$$;State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000, P.R. China$$State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000, P.R. China$$Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000, P.R. ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, P.R. China$$Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000, P.R. China$$

关键词: Yttrium titanate;    solâ€�?�gel method;    synthesis.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Pyrochlore-type yttrium titanate (Y₂Ti₂O₇) nanoparticles were successfully synthesized by a simple soft-chemistry technique viz. citric acid solâ€�?�gel method (CAM). The preparation process was monitored by X-ray diffraction, thermogravimetricâ€�?�differential thermal analysis and Fourier transformâ€�?�infrared experiments and the microstructures and average size of as-prepared products were characterized by transmission electron microscopy and high resolution transmission electron microscopy images. It was found that compared with traditional solid state reaction (SSR), Y₂Ti₂O₇ nanopowders were synthesized at a relatively low temperature (750°C) for shortened reaction time. Detailed analysis showed that the as-prepared Y₂Ti₂O₇ with good dispersibility and narrow size distribution were quasi-spherical; the average size was about 20â€�??30 nm, also, the obtained products had higher BET surface area (50 m²/g). These properties are very helpful for a photocatalyst to achieve excellent activity and may result in better behaviour in hydrogen storage.

【 授权许可】

Unknown