Paper Title:
Preparation, Characterization and Photocatalysis Properties of Ultrafine Perovskite-Type LaCoO3
  Abstract

Using La2O3 and Co(NO3)2•6H2O as raw material, ultrafine perovskite-type oxides LaCoO3 was prepared by Supercritical Fluid Drying Technology and Sol-Gel method. The prepared materials’ crystal structure and morphology were characterized by TG-DTA、XRD、FT-IR and TEM. The photocatalytic activity of ultrafine LaCoO3 powders was evaluated by degradation of methyl orange (MO) solution under 15W UV light irradiation. The results show: At 250°C , the amorphous ultrafine La-Co particles with the size less than 10 nm can be obtained by Supercritical Fluid Drying Technology. At 850°C , the size of the particles increased to 15-35nm, the nanocrystalline LaCoO3 had a perfect rhombohedral perovskite structure. At 900°C , the crystalline phases of the lanthanum-cobalt mixed oxides were LaCoO3 and La2O3, and the amorphous component is Co2O3, the presence of lanthanum affects the crystallization of cobalt oxides. The LaCoO3 has excellent photocatalytic activities and 100% MO solution was decolorized only after 4h.

  Info
Periodical
Advanced Materials Research (Volumes 197-198)
Edited by
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Pages
935-942
DOI
10.4028/www.scientific.net/AMR.197-198.935
Citation
X. Fu, Y. Chen, G. Q. Yu, C. Yu, H. Z. Wang, G. D. Zhang, "Preparation, Characterization and Photocatalysis Properties of Ultrafine Perovskite-Type LaCoO3", Advanced Materials Research, Vols. 197-198, pp. 935-942, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Katarina Djuriš, G. Branković, Z. Branković, Slavko Bernik, M. Počuča, D. Poleti, B. Antić
Abstract:In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was...
237
Authors: Katarzyna Osinska, Grzegorz Smalarz, Beata Wodecka-Dus, Dionizy Czekaj
Chapter 2: Ceramic and glass materials
Abstract:The (Ba1-xLax)Ti1-x/4O3 (BLT) ceramics for lanthanum content x in the range 0£x£0.005...
141
Authors: Tao Yu, Xin Tan, Ling Zhang
Chapter 2: Chemical Engineering
Abstract:Lanthanum-doped anatase TiO2 coatings, which were composed of assemble crystalline of 50 nm diameter particles have been...
1036
Authors: Qing Li
Chapter 1: Chemical Engineering
Abstract:Nano-TiO2 co-doped with lanthanum and iron photocatalyst powders were prepared with the sol-gel method and supercritical fluid...
36
Authors: Qing Li, Rui Zhi Wen
Chapter 2: Material Science and Engineering
Abstract:Nano-TiO2 photocatalyst powders were prepared through the sol-gel method and supercritical fluid drying(SCFD). The...
584