Polymer-derived mesoporous Ni/SiOC(H) ceramic nanocomposites for efficient removal of acid fuchsin |
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| Affiliation: | 1. College of Materials, Key Laboratory of High Performance Ceramic Fibers (Xiamen University), Ministry of Education, Xiamen 361005, China;2. College of Materials, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China;1. College of Materials, Key Laboratory of High Performance Ceramic Fibers, Xiamen University, Ministry of Education, Xiamen 361005, China;2. College of Materials, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China;1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environmental, Beihang University, 37 Xueyuan Road, Haidian, Beijing, 100191, PR China;2. School of Chemical Engineering, Taishan Medical University, 169 Changcheng Road, Tai''an, 271016, PR China;1. College of Materials, Key Laboratory of High Performance Ceramic Fibers (Xiamen University), Ministry of Education, Xiamen 361005, China;2. College of Materials, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China;3. Institut für Materialwissenschaft, Technische Universität Darmstadt, D-64287 Darmstadt, Germany;1. Department of Chemistry, University of Londrina (UEL), P.O. Box 10.011, Zip Code 86057-970 Londrina, Paraná, Brazil;2. Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, Zip Code 13083-970 Campinas, São Paulo, Brazil;1. Technische Universität Darmstadt, Institut für Materialwissenschaft, Fachgebiet Disperse Feststoffe, Jovanka-Bontschits-Strasse 2, D-64287 Darmstadt, Germany;2. Technische Universität Darmstadt, Institut für Materialwissenschaft, Fachgebiet Oberflächenforschung, Jovanka-Bontschits-Strasse 2, D-64287 Darmstadt, Germany;3. Technische Universität Darmstadt, Institut für Angewandte Geowissenschaften, Fachgebiet Geomaterialwissenschaft, Schnittspahnstrasse 9, D-64287 Darmstadt, Germany |
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| Abstract: | In this paper, magnetic porous Ni-modified SiOC(H) ceramic nanocomposites (Ni/SiOC(H)) were successfully prepared via a template-free polymer-derived ceramic route, which involves pyrolysis at 600 °C of nickel-modified allylhydridopolycarbosilane (AHPCS-Ni) precursors synthesized by the reaction of allylhydridopolycarbosilane (AHPCS) with nickel(II)acetylacetonate (Ni(acac)2). The resultant Ni/SiOC(H) nanocomposites are comprised of in-situ formed nanoscaled Ni socialized with small amounts of NiO and nickel silicides embedded in the amorphous SiOC(H) matrix. The materials show ferromagnetic behavior and excellent magnetic properties with the saturation magnetization in the range of 1.71–7.08 emu g−1. Besides, the Ni/SiOC(H) nanocomposites are predominantly mesoporous with a high BET surface area and pore volume in the range of 253–344 and 0.134–0.185 cm3 g−1, respectively. The measured porosity features cause an excellent adsorption capacity towards a template dye acid fuchsin with the adsorption capacity Qt at 10 min of 80.7–85.8 mg g−1 and the Qe at equilibrium of 123.8–129.8 mg g−1. |
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| Keywords: | Polymer derived ceramics Ceramic nanocomposites Porous ceramics Magnetic properties Dye adsorption |
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