Synthesis of Oxyapatite La9.33Si6O26 Nanocrystals via Solvothermal Method
Tongxiang Cai
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
Yanwei Zeng
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
Ling Wang
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
Shilong Yin
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
Chuanming Li
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
Corresponding Author(s) : Yanwei Zeng
zengyanwei@tom.com
Asian Journal of Chemistry,
Vol. 24 No. 11 (2012): Vol 24 Issue 11
Lanthanum silicate (La9.33Si6O26) nanocrystals with apatite structure for high performance electrolyte of solid oxide fuel cells have been successfully synthesized through a solvothermal process using lanthanum nitrate (La(NO3)3·6H2O), tetraethyl orthosilicate and acetic acid as starting materials. The as-synthesized lanthanum silicate nanocrystals were structurally characterized by XRD, TEM, HRTEM and FESEM. It has been found that the lanthanum silicate nanocrystals were well-dispersed, quasi-spherical in shape and had a narrow size distribution. Furthermore, the as-synthesized nanoparticles exhibited high sinterability and 95 % of theoretical density was obtained when they were sintered at 1200 ºC for 6 h, about 450 ºC lower than that derived from conventional solid-state reactions.
Cai, T., Zeng, Y., Wang, L., Yin, S., & Li, C. (2012). Synthesis of Oxyapatite La9.33Si6O26 Nanocrystals via Solvothermal Method. Asian Journal of Chemistry, 24(11), 4855–4857. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/9780
