Capturing of Nano-TiO2 from Complex Mixtures by Bisphosphonate-Functionalized Fe3O4 Nanoparticles
| Autor: | Peng-Fei Zhang, Yi-Zhou Zhu, He-Fang Wang, Ling-Feng Shen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Detection limit
Anatase Materials science Renewable Energy Sustainability and the Environment General Chemical Engineering 010401 analytical chemistry Nanoparticle Nanotechnology General Chemistry 010501 environmental sciences Nano tio2 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Chemical engineering Titanium dioxide Environmental Chemistry Quantitative analysis (chemistry) Fe3o4 nanoparticles 0105 earth and related environmental sciences |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:1704-1710 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.6b02446 |
| Popis: | Selectively capturing nanosized titanium dioxide (nano-TiO2) from complex mixtures is a very significant but very formidable task both for enriching the analytical methodology and removing/recycling of nano-TiO2. We presented a novel sustainable strategy for such a task by using the bisphosphonate-functionalized Fe3O4 (BP-Fe3O4) nanoparticles as the highly selective adsorbents toward nano-TiO2. The BP-Fe3O4 exhibited high equilibrium adsorption capacity (Qe) toward nano-TiO2 (2.45 g g–1 for 60 nm anatase TiO2) but negligible Qe toward nano-SiO2 (0.01 g g–1 for 15 nm SiO2). The BP-Fe3O4 also had good adsorption capability toward nano-TiO2 in complex liquid media, or in the solid mixtures containing 10−500 times of coexisting nano-SiO2. This capturing strategy enables the green pretreatment for quantitative analysis of nano-TiO2 in complex real samples with the spike recoveries of 69.9–99.0% and low detection limit of 0.02 ppm. Furthermore, this strategy offers great convenience for identification of the cr... |
| Databáze: | OpenAIRE |
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