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Polymer-derived porous Bi2WO6/SiC(O) ceramic nanocomposites with high photodegradation efficiency towards Rhodamine B

Feng, Yao ; Lai, Shuyi ; Yang, Le ; Riedel, Ralf ; Yu, Zhaoju :
Polymer-derived porous Bi2WO6/SiC(O) ceramic nanocomposites with high photodegradation efficiency towards Rhodamine B.
[Online-Edition: https://doi.org/10.1016/j.ceramint.2018.02.061]
In: Ceramics International, 44 (7) S. 8562-8569. ISSN 02728842
[Artikel] , (2018)

Offizielle URL: https://doi.org/10.1016/j.ceramint.2018.02.061

Kurzbeschreibung (Abstract)

Polymer-derived porous Bi2WO6/SiC(O) nanocomposites were prepared by a simple mechanical mixing of Bi2WO6 nanopowders with a polyorganocarbosilane, namely allylhydridopolycarbosilane (AHPCS), followed by pyrolysis of the resulting blend at 700 °C for 2 h. The Bi2WO6 nanopowders were synthesized by the reaction between Bi(NO3)3·5H2O and Na2WO4 and characterized by means of X-ray diffraction (XRD) and dynamic light scattering (DLS). The cross-linking and polymer-to-ceramic transformation of the physically blended Bi2WO6/AHPCS were determined by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). TEM studies revealed that the final ceramic composite is comprised of Bi2WO6 nanoparticles homogeneously embedded in a polymer-derived SiC(O) matrix. Nitrogen sorption isothermal analysis showed the meso-macroporous feature of resultant Bi2WO6/SiC(O) nanocomposites. Finally, the porous Bi2WO6/SiC(O) composites show a high photodegradation efficiency (ca. 90%) towards a model organic dye Rhodamine B (RhB) under UV irradiation. Therefore, the synthesized ceramic composite has to be considered as a promising candidate material for purification of water contaminated with organic dyes.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Feng, Yao ; Lai, Shuyi ; Yang, Le ; Riedel, Ralf ; Yu, Zhaoju
Titel: Polymer-derived porous Bi2WO6/SiC(O) ceramic nanocomposites with high photodegradation efficiency towards Rhodamine B
Sprache: Englisch
Kurzbeschreibung (Abstract):

Polymer-derived porous Bi2WO6/SiC(O) nanocomposites were prepared by a simple mechanical mixing of Bi2WO6 nanopowders with a polyorganocarbosilane, namely allylhydridopolycarbosilane (AHPCS), followed by pyrolysis of the resulting blend at 700 °C for 2 h. The Bi2WO6 nanopowders were synthesized by the reaction between Bi(NO3)3·5H2O and Na2WO4 and characterized by means of X-ray diffraction (XRD) and dynamic light scattering (DLS). The cross-linking and polymer-to-ceramic transformation of the physically blended Bi2WO6/AHPCS were determined by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). TEM studies revealed that the final ceramic composite is comprised of Bi2WO6 nanoparticles homogeneously embedded in a polymer-derived SiC(O) matrix. Nitrogen sorption isothermal analysis showed the meso-macroporous feature of resultant Bi2WO6/SiC(O) nanocomposites. Finally, the porous Bi2WO6/SiC(O) composites show a high photodegradation efficiency (ca. 90%) towards a model organic dye Rhodamine B (RhB) under UV irradiation. Therefore, the synthesized ceramic composite has to be considered as a promising candidate material for purification of water contaminated with organic dyes.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Ceramics International
Band: 44
(Heft-)Nummer: 7
Verlag: Elsevier Science Publishing
Freie Schlagworte: Polymer derived ceramics, Ceramic nanocomposites, Porous ceramics, Photodegradation
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
Hinterlegungsdatum: 07 Jun 2018 08:03
DOI: 10.1016/j.ceramint.2018.02.061
Offizielle URL: https://doi.org/10.1016/j.ceramint.2018.02.061
Sponsoren: Zhaoju Yu thanks Natural Science Foundation of Fujian Province of China (No. 2015J01221) and Creative Research Foundation of Science and Technology on Thermo structural Composite Materials Laboratory (No. 6142911040114) for financial support.
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