Preparation of Y₂Ti₂O₇ Nanocrystal by Sol-Gel Method and its Characterization

Abstract:

Y2Ti2O7 nanocrystals have been prepared at the calcining temperature of 700-900°C by using tetrabutyl titanate as starting materials and citric acid as chelator. The preparation process was monitored by XRD, FT-IR and TG-DTA analysis. Compared with traditional solid state reaction (SSR), the present used methods can prepare can Y2Ti2O7 nanocrystals at a relatively low temperature (750°C) and with shortened reaction time (dwelling time of 1 h). The morphology and averge size of as-prepared products were analysized by FESEM. Results showed that the as-prepared Y2Ti2O7 with good dispersibility and narrow size-distritution were all sphere-like; the average size was about 40-50 nm, Also, the obtained products had higher BET surface area (32 m2/g). These properties are very helpful for a photocatalytic catalyst to achieve excellent activity.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 2175-2179
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.2175
• Online since: March 2010
• Authors: Zhong Sheng Chen, Wei Ping Gong, Teng Fei Chen, Guo Xuan Xiong, Guo Lin Huang
• Keywords: Nanocrystal, Preparation, Pyrochlore Oxide, Sol-Gel Method

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