l -Proline Functionalized Dicationic Framework of Bifunctional Mesoporous Organosilica for the Simultaneous Removal of Lead and Nitrate Ions
| Autor: | Manish Kumar Dinker, Thalasseril G. Ajithkumar, Prashant S. Kulkarni |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Small-angle X-ray scattering General Chemical Engineering Inorganic chemistry 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Tetraethyl orthosilicate chemistry.chemical_compound Mesoporous organosilica chemistry Siloxane Polymer chemistry Magic angle spinning Environmental Chemistry Fourier transform infrared spectroscopy 0210 nano-technology Bifunctional Lead(II) nitrate |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:4188-4196 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.7b00132 |
| Popis: | A novel bifunctional mesoporous organosilica, PEG-functionalized bis-prolinium chloride bridged mesoporous organosilica (BPBMO) was synthesized by reacting the precursor, PEG-functionalized bis-prolinium chloride bridged organosilane (BPRIL) with tetraethyl orthosilicate (TEOS) in the presence of surfactant. The chemical conformation of BPBMO was investigated by using Fourier transform infrared (FTIR), thermogravimentric analysis (TGA), 13C, and 29Si cross-polarization/magic angle spinning (CP/MAS) NMR techniques. The characterization represents PEG-linked-prolinium (−N+Cl–) and carboxyl (−COOH) entities, constructing the dicationic framework through siloxane (Si–O–Si) linkages. The pore-wall distribution and the periodicity of BPBMO retained during the synthesis were examined by small-angle X-ray scattering (SAXS), Brunauer-Emmett-Teller-Barrett-Joyner-Halenda (BET-BJH), and transmission electron microscopy (TEM) techniques. The results revealed BPBMO as a spherical shaped solid (50–100 nm) having mesopo... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|