Anatase-Type Ti1-2xNbxAlxO2 Solid Solution/Silica (SiO2) Composite Nanoparticles: Synthesis, Phase Stability, and Photocatalytic Performance
Anatase-Type Ti1-2xNbxAlxO2 Solid Solution/Silica (SiO2) Composite Nanoparticles: Synthesis, Phase Stability, and Photocatalytic Performance
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锐钛矿型 Ti1-2xNbxAlxO2 固溶体/二氧化硅 (SiO2) 复合纳米颗粒:合成、相稳定性和光催化性能
DOI:
10.4028/www.scientific.net/msf.654-656.2735
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
N. Kuno
中科院分区:
文献类型:
--
作者:
M. Hirano;N. Kuno
Composite nanoparticles (anatase-type Ti1-2XNbXAlXO2 solid solution/SiO2) were directly synthesized from precursor solutions in the presence of urea under mild hydrothermal conditions at 180 °C for 5 h. The crystallite size of anatase was gradually decreased with increased silica content in the composite nanoparticles formed under weakly basic hydrothermal conditions via the hydrolysis of urea. The composite nanoparticles with composition Ti0.9Nb0.05Al0.05O2/SiO2 = 100/10 mol% showed good photocatalytic activity. The anatase-to-rutile phase transformation in the course of heating in air was retarded to maintain the anatase-type structure up to more than 1050 °C without a trace of rutile phase by the formation of composite nanoparticles (Ti0.90Nb0.05Al0.05O2/SiO2 = 100/20 mol%) with amorphous silica.
DOI:
--
发表时间:
2007
期刊:
Bull. Res. Inst. Ind. Tech. AIT 9
影响因子:
--
作者:
M. Hirano;T. Ito;K. Matsushima;K. Date
通讯作者:
K. Date