A solvent-assisted route for coating polystyrene colloids with Ag and the corresponding hollow Ag spheres |
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| Affiliation: | 1. College of Physics and Information Technology, Shaanxi Normal University, Xian 710062, Shaanxi, PR China;2. College of Physics and Mechanical and Electronic Engineering, Xian University of Arts and Science, Xian 710065, PR China;3. ICMMO/LEMHE, Université Paris-Sud 11, 91405 Orsay Cedex, France;1. School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zographos, Athens 15780, Greece;2. School of Mining Engineering and Metallurgy, National Technical University of Athens, 9 Heroon Polytechniou Street, Zographos, Athens GR-157 80, Greece;1. College of Physics and Information Technology, Shaanxi Normal University, Xian 710062, Shaanxi, PR China;2. Department of Basic Courses, Xian Medical University, Xian 710021, Shaanxi, PR China;3. Department of Physics, Xian University of Arts and Science, Xian 710065, Shaanxi, PR China;1. College of Physics and Information Technology, Shaanxi Normal University, Xian 710062, Shaanxi, PR China;2. College of Physics and Mechanical and Electronic Engineering, Xian University of Arts and Science, Xian 710065, PR China;3. ICMMO/LEMHE, Université Paris-Sud 11, 91405 Orsay Cedex, France;1. Institute of Tissue Regeneration Engineering (ITREN), Dankook University, South Korea;2. Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, South Korea;3. Department of Biomaterials Science, College of Dentistry, Dankook University, South Korea;1. Institute for the Dynamics of Environmental Processes (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy;2. Burns Center, Division of Plastic Surgery, Hospital of Padova, Via Giustiniani 2, 35128 Padova, Italy;4. Institute of Inorganic Chemistry and of the Surfaces (ICIS-CNR), Corso Stati Uniti 4, 35127 Padua, Italy |
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| Abstract: | A novel ethylene dichloride solvent-assisted route has been successfully developed to coat uniformly polystyrene colloids with Ag and prepare the corresponding hollow spheres. In this route, by corroding and swelling the PS colloid surface with ethylene dichloride, Ag seeds are synthesized directly in and on the surface layer of core, not only the surface functionalization is avoided, but also may enhance the combination of core and seeds. The ethylene dichloride concentration is crucial for the coating results. The coverage, thickness, and roughness of the Ag shell can be effectively controlled by varying the amount of HCHO during the seeding growth process, and the as-prepared composites can crystallize into ordered structure. This coating route is facile and versatile, and apt to coat PS colloids with other metal and prepare the corresponding hollow metal spheres. |
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