| dc.creator | Valdés, Oscar | |
| dc.creator | Marican, Adolfo | |
| dc.creator | Mirabal-Gallardo, Yaneris | |
| dc.creator | Santos, Leonardo S. | |
| dc.date | 2022-09-30T14:05:18Z | |
| dc.date | 2022-09-30T14:05:18Z | |
| dc.date | 2018 | |
| dc.date.accessioned | 2024-05-02T20:29:43Z | |
| dc.date.available | 2024-05-02T20:29:43Z | |
| dc.identifier | http://repositorio.ucm.cl/handle/ucm/4068 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9274345 | |
| dc.description | The free-radical graft polymerization of acryloxyethyl-trimethylammonium chloride onto commercial silica particles was studied experimentally for extraction of arsenic ions from water. Two steps were used to graft acryloxyethyl-trimethylammonium chloride (Q) onto the surface of nanosilica: anchoring vinyltrimethoxysilane (VTMSO) onto the surface of silica to modify it with double bonds and then grafting Q onto the surface of silica with potassium persulfate as an initiator. The products were characterized by Fourier-transform infrared (FT-IR), the thermogravimetric analysis (TGA), scanning electron microscopy (SEM), 13C, 29Si nuclear magnetic resonance (NMR), and X-ray powder diffraction (XRD). The results showed that it is easy to graft Q onto the surface of silica under radical polimerization. The morphology analysis of silica and modified silica indicated that the silica decreased the size scale after modification. Q/VTMSO-SiO2 was tested for its ability to remove arsenic from drinking water. The results show that the new silica hybrid particles efficiently remove all arsenate ions. In addition, Q/VTMSO-SiO2 showed better sorption capacities for other metal ions (such as copper, zinc, chromium, uranium, vanadium, and lead) than a commercial water filter. | |
| dc.language | en | |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Chile | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
| dc.source | Polymers, 10(6), 626 | |
| dc.subject | Quaternary ammonium | |
| dc.subject | Arsenic | |
| dc.subject | Vinyltrimethoxysilane | |
| dc.subject | Graft polymerization | |
| dc.subject | Silica | |
| dc.title | Selective and efficient arsenic recovery from water through quaternary amino-functionalized silica | |
| dc.type | Article | |
