Selective adsorption and fluorescence sensing of tetracycline by Zn-mediated chitosan non-woven fabric
| Autor: | Chensi Shen, Yanbiao Liu, Chenye Xu, Mingyu Xiong, Man Wang, Huaping Wang, Fang Li, Chunyan Ma, Yaopeng Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Nonwoven fabric
Inorganic chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences Fluorescence Water Purification Ion Biomaterials Chitosan chemistry.chemical_compound Colloid and Surface Chemistry Adsorption Aqueous solution Hydrogen-Ion Concentration Tetracycline 021001 nanoscience & nanotechnology Anti-Bacterial Agents 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Kinetics Zinc chemistry Tetracyclines Selective adsorption 0210 nano-technology Saturation (chemistry) Water Pollutants Chemical |
| Zdroj: | Journal of Colloid and Interface Science. 603:418-429 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.06.091 |
| Popis: | Nowadays, numerous studies have focused on the newly developed technologies for the thorough removal of tetracyclines (TCs). The efficient removal of trace-amount pollutants requires the development of improved materials with higher adsorption capacity and increased adsorption selectivity. Zn(II)-mediated chitosan nonwoven fabric (Zn-CSNW) adsorbent with coordination capability was explored for the effective and selective removal of TC. The adsorption of TC to Zn-CSNW could reach equilibrium in about 30 min with a maximum adsorption capacity of 195.9 mg/g. It exhibited high anti-interference performance for TC adsorption at low concentrations, with good regeneration and effective reuse. Except for citrate, organic materials similar in structure to TC or common ions in aqueous solutions did not show obvious competition for the adsorption of low concentrations of TC. Additionally, the inherent fluorescence of chitosan and the fluorescence sensitization effect of Zn2+ for TC enabled function of Zn-CSNW as an indicator of the adsorption of TC by changes in fluorescence color and intensity under UV light (365 nm). It can indicate the saturation state of the Zn-CSNW, which will bring convenience to the use of the adsorbent. The Zn(II)-mediated coordination interaction plays a vital role in both the selective recognition of TC and the fluorescence sensing of adsorption amount, demonstrating an affordable and effective strategy for the treatment of water containing low amounts of antibiotics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect