Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The similar chemical behavior of metal elements in acidic wastewater remains a significant challenge for their deep separation. A key limitation lies in overcoming weak metal selectivity and low separation efficiency. Our study introduced an innovative regulation strategy to enhance the coordination selectivity, enabling the rapid precipitation of Fe and the efficient complexation of Cu. Research data clearly revealed surprising separation efficiency of Fe-Cu, two elements with similar hydrolysis and coordination behaviors. Using only reaction temperature of 25°C and alkali concentration of 0.5 mol/L, the Fe content in the solid phase reached 58.65 % and only 0.47 % of Cu content remained by TETA (Triethylenetetramine, CHN) regulation. The Fe/Cu ratio was improved from 2.36 before regulation to 124.79, a 53-fold increase. Ultimately, the system achieved complete Fe precipitation, Cu retention rate of 97.4 %, and Fe-Cu separation efficiency of 98.9 %. Importantly, a novel mechanism for rapid one-step precipitation-coordination separation was revealed, emphasizing the role of ligand TETA in lone pairs of electrons in forming a stable tetra-coordinated water-soluble complex via Cu-N bonding. Specifically, the enhanced coordination ability of Cu3d and N2p orbital overlap successfully blocked the interference of Cu on Fe precipitation process. This mechanism enhanced the rapid agglomeration and precipitation efficiency of Fe while suppressing the doping effect of Cu, breaking through the bottleneck of weak metal separation selectivity. This strategy offers a potential new pathway for the green and efficient separation of Fe and Cu in acidic solution systems.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2025.139691 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Photofunctionalization of Light Alkanes by FeO/BCN at 12 °C.
J Am Chem Soc
September 2025
State Key Laboratory of Chemistry for NBC Hazards Protection, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China.
The activation of methane and other gaseous hydrocarbons at low temperature remains a substantial challenge for the chemistry community. Here, we report an anaerobic photosystem based on crystalline borocarbonitride (BCN) supported Fe-O nanoclusters, which can selectively functionalize C-H bonds of methane, ethane, and higher alkanes to value-added organic chemicals at 12 °C. Scanning transmission electron microscopy and X-ray absorption spectroscopy corroborated the ultrafine FeOOH and FeO species in Fe-O clusters, which enhanced the interfacial charge transfer/separation of BCN as well as the chemisorption of methane.
View Article and Find Full Text PDFPerylenediimide-Based Donor-Acceptor MOF for Sunlight-Driven Photocatalytic -α-C(sp)-H Bond Functionalization of Tetrahydroisoquinoline.
Inorg Chem
September 2025
Yunnan Key Laboratory of Crystalline Porous Organic Functional Materials, College of Chemical and Materials Engineering, Qujing Normal University, Qujing 655011, China.
Sequential assembly of donor-acceptor components at the molecular level within a MOF is an effective strategy to achieve efficient electron-hole separation for enhancing the activity of photocatalysts. Meanwhile, the highly efficient and selective functionalization of tetrahydroisoquinoline (THIQ) under mild conditions remains an urgent demand in both the scientific and industrial communities. This work reports a donor-acceptor MOF photocatalyst () constructed by the coordinated assembly of donor and acceptor components, in which a naphthalene unit serves as an electron donor and a perylenediimide unit as an electron acceptor.
View Article and Find Full Text PDFMulti-sphere Cascade DNA Reaction Amplified "On-Super On-Off" PEC Sensor for Sensitive Detection of Pax-5a Gene.
Anal Chem
September 2025
School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, PR China.
Pax-5a gene, as a nucleic acid biomarker closely associated with B-cell acute lymphoblastic leukemia (B-ALL), holds significant potential for early disease diagnosis. In this study, we developed a highly accurate and efficient "on-super on-off" photoelectrochemical (PEC) biosensor based on a dual-photoelectrode heterojunction system integrated with a multisphere cascade DNA amplification strategy. The designed heterojunction dual-photoelectrode platform, comprising a InO/CdS photoanode (on state) and an in situ-formed MIL-68(In)/InO (MIO) photocathode, effectively extends the electron-hole transport pathway, enhances photogenerated charge separation, and produces high-amplitude signal output (super on state), thereby providing a robust baseline for signal transduction.
View Article and Find Full Text PDFModeling human retinal ganglion cell axonal outgrowth, development, and pathology using pluripotent stem cell-based microfluidic platforms.
Proc Natl Acad Sci U S A
September 2025
Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202.
Retinal ganglion cells (RGCs) are highly compartmentalized neurons whose long axons serve as the sole connection between the eye and the brain. In both injury and disease, RGC degeneration occurs in a similarly compartmentalized manner, with distinct molecular and cellular responses in the axonal and somatodendritic regions. The goal of this study was to establish a microfluidic-based platform to investigate RGC compartmentalization in both health and disease states.
View Article and Find Full Text PDFDeep-learning-enabled high-throughput Screening of MXene photocatalysts for hydrogen production.
Nanoscale
September 2025
School of Materials Science and Engineering, Beihang University, Beijing 100191, China.
The challenge of photocatalytic hydrogen production has motivated a targeted search for MXenes as a promising class of materials for this transformation because of their high mobility and high light absorption. High-throughput screening has been widely used to discover new materials, but the relatively high cost limits the chemical space for searching MXenes. We developed a deep-learning-enabled high-throughput screening approach that identified 14 stable candidates with suitable band alignment for water splitting from 23 857 MXenes.
View Article and Find Full Text PDF