AI Article Synopsis
- A novel material, PP-g-CaAlg@SiO, was developed by crosslinking calcium alginate with polypropylene and mesoporous silica to effectively adsorb Bisphenol A (BPA) and lead (Pb).
- Characterization techniques like SEM and FTIR showed that the material's unique nanorod structure enhances its surface area, leading to its high adsorption capacity.
- The study also explored the adsorption mechanisms through ITC and molecular dynamics, finding that hydrogen bonding is crucial for BPA, while carboxyl groups primarily facilitate Pb adsorption, and the material maintains stable performance over multiple cycles.
Article Abstract
Polypropylene grafted calcium alginate with mesoporous silica (PP-g-CaAlg@SiO) for adsorbing Bisphenol A (BPA) and Pb was prepared by calcium chloride (CaCl) crosslinking and hydrochloric acid solution treatment. The PP-g-CaAlg@SiO was characterized by SEM, TEM, BET, XRD, FTIR and TG. PP-g-CaAlg@SiO exhibited excellent adsorption capacity for BPA and Pb, because the formation of reticulated nanorod structure increased its specific surface area. Subsequently, the adsorption behaviours of BPA and Pb, including adsorption isotherms and adsorption kinetics, were investigated. Afterward, isothermal titration calorimetry (ITC) and molecular dynamics (MD) simulation were performed to explore the adsorption mechanism. The results indicated that hydrogen bonding played the leading role in the adsorption of BPA, while the bonding of Pb to carboxyl group binding sites was the focus of Pb adsorption. In addition, the adsorption capacity of PP-g-CaAlg@SiO was stable over 10 cycles.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2023.124131 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Moisture-driven carbonation kinetics for ultrafast CO mineralization.
Proc Natl Acad Sci U S A
January 2025
Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China.
CO mineralization, a process where CO reacts with minerals to form stable carbonates, presents a sustainable approach for CO sequestration and mitigation of global warming. While the crucial role of water in regulating CO mineralization efficiency is widely acknowledged, a comprehensive understanding of the underlying mechanisms remains elusive. This study employs a combined experimental and atomistic simulation approach to elucidate the intricate mechanisms governing moisture-driven carbonation kinetics of calcium-bearing minerals.
View Article and Find Full Text PDFTailoring the Porous Structure of Carbon for Enhanced Oxidative Cleavage and Esterification of C(CO)-C Bonds.
ChemSusChem
December 2024
National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, P. R. China.
The cleavage and functionalization of carbon-carbon bonds are crucial for the reconstruction and upgrading of organic matrices, particularly in the valorization of biomass, plastics, and fossil resources. However, the inherent kinetic inertness and thermodynamic stability of C-C σ bonds make this process challenging. Herein, we fabricated a glucose-derived defect-rich hierarchical porous carbon as a heterogeneous catalyst for the oxidative cleavage and esterification of C(CO)-C bonds.
View Article and Find Full Text PDFStrong adsorption of guanidinium cations to the air-water interface.
Proc Natl Acad Sci U S A
January 2025
Department of Chemistry, University of California, Berkeley, CA 94720.
Combining Deep-UV second harmonic generation spectroscopy with molecular simulations, we confirm and quantify the specific adsorption of guanidinium cations to the air-water interface. Using a Langmuir analysis of measurements at multiple concentrations, we extract the Gibbs free energy of adsorption, finding it larger than typical thermal energies. Molecular simulations clarify the role of polarizability in tuning the thermodynamics of adsorption, and establish the preferential parallel alignment of guanidinium at the air-water interface.
View Article and Find Full Text PDFEcofriendly and biocompatible biochars derived from waste-branches for direct and efficient solid-phase extraction of benzodiazepines in crude urine sample prior to LC-MS/MS.
Mikrochim Acta
January 2025
School of Public Health, Hebei Key Laboratory of Occupational Health and Safety for Coal Industry, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China.
Biochars (BCs) derived from waste-branches of apple tree, grape tree, and oak were developed for direct solid-phase extraction (SPE) of five benzodiazepines (BZDs) in crude urine samples prior to liquid chromatography-tandem mass spectrometry (LC-MS/MS) determination. Scanning electron microscopy, elemental analyzer, X-ray diffractometry, N adsorption/desorption experiments, and Fourier transform infrared spectrometry characterizations revealed the existence of their mesoporous structure and numerous oxygen-containing functional groups. The obtained BCs not only possessed high affinity towards BZDs via π-π and hydrogen bond interactions, but also afforded the great biocompatibility of excluding interfering components from undiluted urine samples when using SPE adsorbents.
View Article and Find Full Text PDFSelective adsorption of unmethylated DNA on ZnO nanowires for separation of methylated DNA.
Lab Chip
January 2025
Department of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan.
DNA methylation is a crucial epigenetic modification used as a biomarker for early cancer progression. However, existing methods for DNA methylation analysis are complex, time-consuming, and prone to DNA degradation. This work demonstrates selective capture of unmethylated DNAs using ZnO nanowires without chemical or biological modifications, thereby concentrating methylated DNA, particularly those with high methylation levels that can predict cancer risk.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!