Use of Sulfobetaine-Based Block Copolymer as Stabilizer in Silver Nanoparticle Production and Catalytic Activity Studies
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, cilt.18, sa.4, ss.2521-2529, 2018 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 18 Sayı: 4
- Basım Tarihi: 2018
- Doi Numarası: 10.1166/jnn.2018.14338
- Dergi Adı: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
- Sayfa Sayıları: ss.2521-2529
- Anahtar Kelimeler: Sulfobetaine Copolymer, Silver Nanoparticle, Catalytic Activity, p-Nitrophenol, NOBLE-METAL COLLOIDS, IN-SITU FORMATION, GOLD NANOPARTICLES, BIMETALLIC NANOPARTICLES, AQUEOUS-MEDIUM, SIZE CONTROL, MICELLES, MICELLIZATION, GLYCOL), OXIDE)
- Eskişehir Osmangazi Üniversitesi Adresli: Evet
Özet
A zwitterionic sulfobetaine-based diblock copolymer was successfully synthesized and used in the preparation and stabilization of Ag nanoparticles (AgNPs). For the related block copolymer, a precursor AB type diblock copolymer was synthesized via atom transfer radical polymerization by using a MPEG-based ATRP macroinitiator and 2-(N-dimethylamino)ethyl methacrylate (DMA) comonomer. Tertiary amine residues of PDMA blocks in poly(ethylene glycol) methyl ether-b-poly[2(N-diethylamino)ethyl methacrylate] (MPEG-b-PDMA) precursor was then converted to polybetaine structures by reacting with 1,3-propanesultone to obtain poly(ethylene glycol) methyl ether-b-poly[3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate] (MPEG-b-P beta DMA) derivative. The resulting block copolymer was successfully used as stabilizer in the chemical and sonochemical synthesis of spherical AgNPs with a diameter in the range of 7.9-9.3 nm. The average diameter of AgNPs synthesized by sonochemical method was smaller than those synthesized by chemical method. The MPEG-b-P beta DMA diblock copolymer was determined to be a good stabilizer for AgNPs. The AgNPs dispersion was stable for more than 5 months without any flocculation at room temperature. The catalytic activity of polymer-AgNP dispersion was also investigated in the reduction of p-nitrophenol to p-aminophenol and was found to be quite effective.