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Synthesis and catalytic activity of doped TiO2-palygorskite composites
Abstract This paper reports the synthesis of the VOx–WOy/TiO2-palygorskite composite catalysts via mixed impregnation method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The fibers of palygorskite retained the original morphology upon calcination. The VOx–WOy/TiO2 (VWT) particles were attached on the surface of the palygorskite. The mass ratio of VWT to palygorskite showed an obvious effect on the coating condition of VWT onto the palygorskite, which also affected the catalytic performance. The composites had the highest catalytic activity of 90% to orto-dichlorobenzene (o-DCB) at the mass ratio of 2:1.
Research highlights ► VOx–WOy/TiO2-palygorskite composites were synthesized via mix impregnation method. ► Coating condition of VOx–WOy/TiO2 onto palygorskite fibers varied with its percentage. ► The catalytic activity of the composites to orto-dichlorobenzene can reach 90%.
Synthesis and catalytic activity of doped TiO2-palygorskite composites
Abstract This paper reports the synthesis of the VOx–WOy/TiO2-palygorskite composite catalysts via mixed impregnation method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The fibers of palygorskite retained the original morphology upon calcination. The VOx–WOy/TiO2 (VWT) particles were attached on the surface of the palygorskite. The mass ratio of VWT to palygorskite showed an obvious effect on the coating condition of VWT onto the palygorskite, which also affected the catalytic performance. The composites had the highest catalytic activity of 90% to orto-dichlorobenzene (o-DCB) at the mass ratio of 2:1.
Research highlights ► VOx–WOy/TiO2-palygorskite composites were synthesized via mix impregnation method. ► Coating condition of VOx–WOy/TiO2 onto palygorskite fibers varied with its percentage. ► The catalytic activity of the composites to orto-dichlorobenzene can reach 90%.
Synthesis and catalytic activity of doped TiO2-palygorskite composites
He, Xi (author) / Tang, Aidong (author) / Yang, Huaming (author) / Ouyang, Jing (author)
Applied Clay Science ; 53 ; 80-84
2011-05-04
5 pages
Article (Journal)
Electronic Resource
English
Synthesis and catalytic activity of doped TiO2-palygorskite composites
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