Fabrication of multi-functional porous microspheres in a modular fashion for the detection, adsorption, and removal of pollutants in wastewater
| Autor: | Shuo Ge, Jie Wang, Shengyang Tao, Weijun Li, Guangtao Li, Lijing Zhang, Baojun Ding, Haonan Shi, Ning Gao, Yunzhe Ding |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Fabrication
Materials science Surface Properties Metal ions in aqueous solution Microfluidics Nanoparticle 02 engineering and technology Wastewater 010402 general chemistry 01 natural sciences Biomaterials Magnetics Colloid and Surface Chemistry Adsorption Metals Heavy Specific surface area Particle Size Coloring Agents Porosity 021001 nanoscience & nanotechnology Ferrosoferric Oxide Microspheres 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Chemical engineering 0210 nano-technology Water Pollutants Chemical |
| Zdroj: | Journal of Colloid and Interface Science. 522:1-9 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2018.03.060 |
| Popis: | Water pollution control has become significant challenges in recent years because of their extensive species diversity. It is critical to developing general-purpose materials for environmental rehabilitation. In this paper, a novel module-assembly method is developed to prepare multi-functional materials for treating pollutants in water. Building blocks are porous nanoparticles with a different function. Microspheres (MS) with a diameter of 90 μm are prepared and have a coefficient of variation of 6.8%. The modular fashion of self-assembly process in a microfluidic chip is the crucial factor in fabricating the multifunction material. The assembled microspheres with different building modules still have a specific surface area larger than 400 m2 g−1, and exhibit excellent performance in adsorbing various pollutants in water, such as heavy metal ions and organic dyes. The adsorption capacities of them to Hg2+ and orange II reach 150 mg g−1 and 333 mg g−1, respectively. The integrated fluorescence probes in microspheres can detect low concentration (9.8 ppb) of Hg2+. Microspheres integrated with Fe3O4 nanoparticles have a magnetic susceptibility of 6.01 emu g−1 and can be easily removed from wastewater by applying an external magnetic. Due to the stability of inorganic building blocks, each function in the assembled system is well performed, and multi-functional “All-in-One” materials can be easily fabricated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect