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Preparation of Mg/Al-LDH@HC composite with low concentration hydrochloric acid modified for phosphate removal from aqueous solution: Synthesis, adsorption performance and mechanism.
J Environ Manage
January 2025
College of Energy and Environment, Shenyang Aerospace University, Shenyang, 110136, China.
With high microporosity, good dispersibility, excellent specific surface area and large content surface functional group, hydrochar demonstrates significant advantages and strong affinity towards pollutants in water. Modification method plays a significant role for anion adsorption by modified hydrochar, layered double hydroxide (LDH) modified hydrocarbons (Mg/Al-LDH@HC-HCl) have been synthesized through a one-step hydrothermal approach and activated with hydrochloric acid in this paper. The physical and chemical characteristics of the hydrochar, both before and after modification, are analyzed using BET, SEM-EDS, TEM, XRD, FTIR, and XPS to explore the phosphate adsorption mechanisms.
View Article and Find Full Text PDFTwo-in-one strategy to enhance the stability of TiCT in transition metal ion solutions.
J Colloid Interface Sci
January 2025
College of Materials Science and Engineering, Hunan University, Changsha 410082 PR China. Electronic address:
Although MXenes have attracted significant attention across diverse fields, they exhibit a pronounced susceptibility to oxidation in aqueous environments, with oxidation significantly accelerated in the presence of transition metal ions (TMI) such as Fe and Cu. This limitation impedes the synthesis of transition metal compounds/MXene-based composites and their potential for functional applications. In this study, we elucidate the mechanism of accelerated oxidation of TiCT is that Fe promotes the electron loss in TiCT, thus leading to an increased production of hydroxyl radicals (OH) to oxidize TiCT.
View Article and Find Full Text PDFRisks associated with opioid prescriptions for headache in the emergency department.
Am J Emerg Med
January 2025
Departments of Emergency Medicine (EM) and Community Health Sciences, University of Calgary, Canada.
Study Hypothesis: Use of opioids for treatment of headache in the emergency department (ED) is associated with an increased 1-year risk of opioid-related adverse events.
Objective: To assess the safety and efficacy of opioid prescribing for ED patients with headache.
Methods: We performed a multicenter observational cohort study using linked administrative data.
A Multi-Phase Analytical Model for Effective Electrical Conductivity of Polymer Matrix Composites Containing Micro-SiC Whiskers and Nano-Carbon Black Hybrids.
Polymers (Basel)
January 2025
Advanced Manufacturing Institute, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia.
Multifunctional polymer composites containing micro/nano hybrid reinforcements have attracted intensive attention in the field of materials science and engineering. This paper develops a multi-phase analytical model for investigating the effective electrical conductivity of micro-silicon carbide (SiC) whisker/nano-carbon black (CB) polymer composites. First, CB nanoparticles are dispersed within the non-conducting epoxy to achieve a conductive CB-filled nanocomposite and its electrical conductivity is predicted.
View Article and Find Full Text PDFThe External Validation of a Multivariable Prediction Model for Recurrent Pelvic Organ Prolapse After Native Tissue Repair: A Prospective Cohort Study.
J Clin Med
January 2025
Department of Obstetrics and Gynecology, Zuyderland Medical Center, Henri Dunantstraat 5, 6419 PC Heerlen, The Netherlands.
: A prediction model for anatomical cystocele recurrence after native tissue repair was developed and internally validated in 2016. This model estimates a patients' individual risk of recurrence and can be used for counseling. Before implementation in urogynecological clinical practice, external validation is needed.
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