A simple route to disperse silver nanoparticles on the surfaces of silica nanofibers with excellent photocatalytic properties

Journal Article · Sun Jul 15 00:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.03.042· OSTI ID:22215146

Wang, Xin ^[1]; Fan, Huiqing ^[1]; Ren, Pengrong; Yu, Huawa; Li, Jin ^[1]

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1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072 (China)

Graphical abstract: The SiO{sub 2}/Ag composite nanofibers have been prepared by electrospinning and thermal decomposition of hybrid nanofibers, which exhibit a good catalytic property in reducing the methyl orange dye. Highlights: ► Hydrochloric acid was used as the catalyst of tetraethyl orthosilicate. ► Silver nanoparticles are obtained by pyrolysis of silver chloride. ► PVP–silica hybrid can disperse silver chloride and thus preventing the aggregation of silver nanoparticles. ► The catalytic activity of SiO{sub 2}/Ag composite nanofibers is much larger than that of SiO{sub 2} nanofibers. -- Abstract: In this work, monodispersed silver nanoparticles decorated SiO{sub 2} nanofibers were synthesized by electrospinning method, followed by thermal treatment at 600 °C. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermo-gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) were used to characterize the composite nanofibers. Accordingly, the detailed formation mechanism of SiO{sub 2}/Ag composite nanofibers was discussed. Furthermore, an excellent catalytic activity of SiO{sub 2}/Ag composite fibers was observed by a degradation reaction of methyl orange (MO) dye.

• OSTI ID: 22215146
• Journal Information: Materials Research Bulletin, Vol. 47, Issue 7; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CATALYSTS
FIBERS
HEAT TREATMENTS
HYDROCHLORIC ACID
METHYL ORANGE
NANOSTRUCTURES
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
SILICA
SILICATES
SILICON OXIDES
SILVER
SILVER CHLORIDES
SURFACES
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY