Design of high sorbent pectin/CaCO3 composites tuned by pectin characteristics and carbonate source |
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| Affiliation: | 1. “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania;2. Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Strasse 6, 01069 Dresden, Germany;1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;2. Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, PR China;1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China;2. Sichuan Engineering Technical College, Deyang 618000, China;1. Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla tér 1, Szeged H-6720, Hungary;2. Laboratory of High Performance Ceramics, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf CH-8600, Switzerland;3. Laboratory of Physics of Complex Matter, École Polytechnique Fédérale de Lausanne, Ecublens CH-1026, Switzerland;1. Super Insulation Composite Laboratory, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;2. School of Electronic Science and Engineering, Nanjing University, Nanjing 210016, PR China;3. Center of Materials Physics and Chemistry, School of Physics and Nuclear Energy Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China;1. MINES ParisTech, PSL — Research University, CEMEF — Centre for Material Forming, CNRS UMR 7635, CS10207 rue Claude Daunesse, 06904 Sophia Antipolis Cedex, France;2. Linde AG, Carl-von-Linde-Str. 25, 85716 Unterschleissheim, Germany;3. Lafarge Centre de Recherche, 95 rue du Montmurier, 38291 Saint Quentin Fallavier, France;1. College of Equipment Manufacture, Hebei University of Engineering, Handan 056038, China;2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China |
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| Abstract: | Five pectin samples – which differ by the methylation degree and/or amide content – were used to prepare inorganic/organic composites by CaCO3 mineralization from supersaturated solutions. The pectin chemical structure and concentration could control the composite superstructure by induction or orientation of crystal growth. The inorganic materials may also control CaCO3 polymorphism and morphologies and therefore different carbonate sources, such as Na2CO3, diethylcarbonate or ammonium carbonates, were used as modulators for crystal growth. The morphology of the new CaCO3/pectin composites was investigated by SEM and the polymorphs content by X-ray diffraction, as compared to bare CaCO3 samples prepared in similar conditions. The composites were tested as sorbents for Cu(II) and Ni(II) ions. |
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