Tahira Bibi, Ashraf Ali, Sarah Alharthi, Eman Y. Santali
{"title":"Efficient removal of bisphenol A from water using C18 functionalized silica-coated iron oxide nanoparticles","authors":"Tahira Bibi, Ashraf Ali, Sarah Alharthi, Eman Y. Santali","doi":"10.1007/s11051-024-06202-0","DOIUrl":null,"url":null,"abstract":"<div><p>The presence of bisphenol A (BPA) in the environment is becoming an increasingly serious threat to human health, and its removal is crucial. In the current study, a novel adsorbent based on C18 functionalized silica-coated iron oxide nanoparticles (Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-C18) was prepared for the adsorptive removal of BPA from water. First, magnetic Fe<sub>3</sub>O<sub>4</sub> NPs were prepared and coated with porous silica particles by the sol–gel method to prepare Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>. Then, surface functionalization of Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> was carried out with octadecyl dimethyl chlorosilane to prepare Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-C18. The developed adsorbent was characterized by elemental analysis, FTIR spectroscopy, SEM, TEM, XRD analysis, BET, and BJH analysis. The effect of various parameters such as concentration, adsorbent dose, contact time, and pH on BPA adsorption was studied during batch adsorption experiments. Maximum adsorption capacity (473.224 mg/g) and removal efficiency (94%) were achieved with the following parameters: concentration (60 mg/L), sorbent dose (10 mg/L), pH (6), and contact time (90 min). The isotherm and kinetics studies show that the adsorption of BPA onto Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-C18 followed the Langmuir isotherm and pseudo 2nd-order model, respectively. The adsorbent was regenerated, and the removal efficiency dropped only by 20% after using it 30 times.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"27 1","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanoparticle Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11051-024-06202-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The presence of bisphenol A (BPA) in the environment is becoming an increasingly serious threat to human health, and its removal is crucial. In the current study, a novel adsorbent based on C18 functionalized silica-coated iron oxide nanoparticles (Fe3O4@SiO2-C18) was prepared for the adsorptive removal of BPA from water. First, magnetic Fe3O4 NPs were prepared and coated with porous silica particles by the sol–gel method to prepare Fe3O4@SiO2. Then, surface functionalization of Fe3O4@SiO2 was carried out with octadecyl dimethyl chlorosilane to prepare Fe3O4@SiO2-C18. The developed adsorbent was characterized by elemental analysis, FTIR spectroscopy, SEM, TEM, XRD analysis, BET, and BJH analysis. The effect of various parameters such as concentration, adsorbent dose, contact time, and pH on BPA adsorption was studied during batch adsorption experiments. Maximum adsorption capacity (473.224 mg/g) and removal efficiency (94%) were achieved with the following parameters: concentration (60 mg/L), sorbent dose (10 mg/L), pH (6), and contact time (90 min). The isotherm and kinetics studies show that the adsorption of BPA onto Fe3O4@SiO2-C18 followed the Langmuir isotherm and pseudo 2nd-order model, respectively. The adsorbent was regenerated, and the removal efficiency dropped only by 20% after using it 30 times.
期刊介绍：
The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size.
Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology.
The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.
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