Preparation of uniform rhodamine B-doped SiO{sub 2}/TiO{sub 2} composite microspheres

Journal Article · Wed Feb 15 04:00:00 EST 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.11.006· OSTI ID:20784883

Fuyong, Yang ^[1]; Ying, Chu ^[1]; Lei, Huo ^[1]; Yang, Yang ^[1]; Yang, Liu ^[1]; Jinglin, Liu ^[1]

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1. Faculty of Chemistry, Northeast Normal University, Changchun 130024 (China)

Uniform rhodamine B (RB)-doped SiO{sub 2}/TiO{sub 2} composite microspheres with catalytic and fluorescent properties were prepared by an easy and economical method in this paper. The composite microspheres were built up with well-dispersed silica particles as the cores, RB as both the doped agent and stabilizer, and the TiO{sub 2} shells were obtained through the hydrolysis of TiCl{sub 4} in water bath. The morphology and structure of the particles were characterized by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). The characterization results indicate that composite particles are all in spherical shape and have a narrow size distribution. The composite particles calcined above 500 deg. C reveal clear crystalline reflection peaks of the rutile TiO{sub 2} which exhibits well catalytic property. The photocatalytic experiment was carried out in order to examine the catalytic property of composite microspheres. The fluorescent property of particles was also investigated. Dye-leakage test indicates that RB molecules entrapped in the composite particles by this method are stable inside the particles.

• OSTI ID: 20784883
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
DOPED MATERIALS
HYDROLYSIS
MICROSPHERES
RUTILE
SCANNING ELECTRON MICROSCOPY
SILICA
SILICON OXIDES
SPHERICAL CONFIGURATION
TEMPERATURE RANGE 0400-1000 K
TITANIUM CHLORIDES
TITANIUM OXIDES
X-RAY DIFFRACTION