期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 42, 期 9, 页码 1350-1367出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2020.1764367
关键词
Adsorption; norfloxacin; ofloxacin; iron; copper oxides composite particles; mechanism analysis
资金
- Henan Science and Technology Department in China [162300410016]
- program of processing and efficient utilization of biomass resources of Henan center for outstanding overseas scientists [GZS2018004]
The study investigated the adsorption capacity of iron, copper oxides composite particles on norfloxacin and ofloxacin from aqueous solution, with characterization done using various surface analysis techniques. The experimental results showed that the adsorption process was spontaneous, endothermic, and likely involved multiple interactions.
Iron, copper oxides composite particles (Fe/Cu oxides CPs) were produced using rapid, single-step, green and sustainable pathway from biomolecules of pine needle extract and were adopted as a potential adsorbent for the removal of norfloxacin (NOR) and ofloxacin (OFLX) from aqueous solution. To understand the morphologies and properties of Fe/Cu oxides CPs, surface analysis via SEM image, EDS, TEM, XPS, BET and FTIR pattern were employed. The effects of factors such as contact time, reaction temperature, initial pH, initial concentration and ionic strength on the adsorption capacity of NOR or OFLX onto Fe/Cu oxides CPs were studied. Kinetic analysis confirmed that the kinetic data were well described by Double-constant rate equation. The experimental equilibrium data were well fitted by Redlich-Peterson, Koble-Corrigan and Dubinin-Radushkevich models and the maximum adsorption capacity of Fe/Cu oxides CPs calculated by Langmuir model for NOR and OFLX was 1.64 mmol/g and 1.26 mmol/g at 293 K, respectively. Thermodynamic parameters such as Gibbs free energy (Delta G), enthalpy (Delta H) and entropy (Delta S) were calculated and the results indicated that the NOR or OFLX adsorption onto Fe/Cu oxides CPs was spontaneous and endothermic. Adsorption mechanism of NOR and OFLX may be involved a combination of electrostatic interaction, the formation of hydrogen bonds, pi-pi stacking interactions, surface complexation, hydrophobic interaction.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据