Oxygen Functionalities Research Articles

Passivation of Iodine Vacancies in Perovskite Photodetectors by Oxygen Functional Groups in the Main and Side Chains of Alcohol Polymers

Passivation of Iodine Vacancies in Perovskite Photodetectors by Oxygen Functional Groups in the Main and Side Chains of Alcohol Polymers

Activated Carbon from Birch Wood as an Electrode Material for Aluminum Batteries and Supercapacitors

AbstractDue to its sustainable approach, biomass is the subject of much research focused on the synthesis of multifunctional materials including electrodes for batteries and supercapacitors. In this work, sawdust from the processing of birch logs was used to produce a highly porous carbon material (CBW) that is employed for the construction of electrodes for aluminum batteries (ABs) and supercapacitors (SCs). A multitude of characterizations indicated that CBW is built in with highly disordered amorphous carbons and an extremely high specific surface area of 3029 m2 g−1 which is predominant with microporous features. The chemical analysis of CBW indicated the presence of a significant amount of oxygen functionalities. As a cathode of AB, CBW achieved discharge capacities 115, 74, 54, 50, 47, 43, and 29 mAh g−1 at current rates 0.1, 1.0, 2.0, 3.0, 4.0, 5.0, and 10.0 A g−1, respectively. Similarly, SC with CBW symmetric electrodes exhibited capacitances 143, 94, 87, 79, 74, 69, 65, and 51 F g−1 at current rates 0.1, 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, and 10.0 A g−1, respectively. The electrochemical characterization revealed that CBW is promising for ABs and SCs, and controlling the porosity type could further enhance the performance.

Milky White Supernatant in the Cardiopulmonary Bypass Circuit in Severe Hypertriglyceridemia During Pediatric Cardiac Surgery: A Case Report

We present a case of severe hypertriglyceridemia (HTG) in a 21-month old female undergoing cardiac surgery for a ventricular septal defect and subaortic membrane excision. During the operation, a milky white supernatant was observed in the cardiopulmonary bypass circuit, prompting immediate lipid profile testing that revealed elevated triglycerides. The management involved maintaining anticoagulation with heparin dose–response testing and ensuring oxygenator function by measuring blood gas analysis, lactate, and arterial line pressure. The child recovered without complications. This case highlights the critical need for prompt identification and management of HTG in pediatric cardiac surgery to mitigate risks and ensure successful outcomes.

Biochar for ameliorating soil fertility and microbial diversity: From production to action of the black gold.

This article evaluated different production strategies, characteristics, and applications of biochar for ameliorating soil fertility and microbial diversity. The biochar production techniques are evolving, indicating that newer methods (including hydrothermal and retort carbonization) operate with minimum temperatures, yet resulting in high yields with significant improvements in different properties, including heating value, oxygen functionality, and carbon content, compared to the traditional methods. It has been found that the temperature, feedstock type, and moisture content play critical roles in the fabrication process. The alkaline nature of biochar is attributed to surface functional groups and addresses soil acidity issues. The porous structure and oxygen-containing functional groups contribute to soil microbial adhesion, affecting soil health and nutrient availability, improving plant root morphology, photosynthetic pigments, enzyme activities, and growth even under salinity stress conditions. The review underscores the potential of biochar to address diverse agricultural challenges, emphasizing the need for further research and application-specific considerations.

Negative contribution from defects responsible for low Young's modulus of graphene oxide at small defect densities.

Graphene oxide has been extensively employed as an additive in several nanocomposites to enhance their mechanical stability even though its Young's modulus is significantly smaller than that of pristine graphene. In the past decade, various chemical functionalizations have been attempted to enhance the mechanical strength of graphene oxide. In this work, we analyze the atomic contributions to the Young's modulus (YM) of graphene oxide with relevant models to decouple the role of the defects and the oxygen functionalities. Based on our analysis we show that (1) the presence of defects is more important than the oxygen groups for reducing the YM and (2) the defect atoms provide negative contribution to the YM at low defect densities. The latter novel observation can be exploited, in principle, to perform selective substitution of the defect atoms to increase the YM of graphene oxide while keeping other functional groups in the non-defect region intact for further functionalization, if required. In the proof of concept example, 75% of the enhancement of the YM obtained upon substitution of the oxygen functionalities with two hydrogen atoms, in silico, can be accomplished by displacing just 10% of the oxygen atoms that are exclusive to the defects.

Insights of Zinc Ion Storage in Chilli-Stem Derived Porous Carbon Enabling Ultrastability and High Energy Density of Zinc-Ion Hybrid Supercapacitors.

Aqueous zinc ion hybrid supercapacitors (ZIHSCs) are promising as low-cost and safe energy storage devices for next-generation applications. Still, their energy-power performance and durability are far from satisfactory. Here, we present an energy-dense, and ultrastable ZIHSC realized using activated porous carbons derived from chilli-stems. KOH activation resulted in a high specific surface area of 1710 m2/g, abundant mesoporous structure, and oxygen functionalities, which helped the KOH-activated carbon (CSK) to yield an impressive specific capacity and energy density of 192 mA h/g and 172 W h/kg, respectively, and makes it the top-performing ZIHSC in recent times. ZIHSC's cycling performance is exceptional, retaining over 90% capacity even after 50,000 charge-discharge cycles. Molecular dynamics simulations reveal easy Zn ion diffusion through interconnected channels and subsequent pore fillings within the carbon electrodes, rendering impressive performance. Simulations further reveal important atomic interactions, demonstrating that higher currents drawn from the device cause partial filling of pores and blockages in the channels and result in a decrease in the device's specific capacity. Benefitted by CSK's impressive performance, the aqueous Zn@pCu//CSK full-cell device has demonstrated good energy-power densities (57.7 W h/kg and 4.5 k W/kg) and durability over tens of thousands of cycles, further substantiating ZIHSCs' application prospects in real life.

Carbon Mediated In Situ Cathode Interface Stabilization for High Rate and Highly Stable Operation of All‐Solid‐State Lithium Batteries

AbstractInterfacial stability issues at the cathode remain a bottleneck to developing durable and high‐power all‐solid‐state lithium batteries (ASSLBs). In fact, the presence of conductive carbon in the cathode, necessary for high capacity and power capability, is believed to aggravate the stability woes. Thus, it is typically excluded from the cathode mix. Herein, employing a model functionalized carbon, it is shown that a small carbon surface oxygen functionality can in situ engineer a robust carbon–solid electrolyte interphase, which arrests conductive carbon‐mediated degradation of Li6PS5Cl into reactive polysulfides that degrades the active LiNi1/3Mn1/3Co1/3O2 (NMC) cathode. Such interfacial stabilization, as confirmed by ex situ spectroscopic and in situ impedance analysis, combined with fast charge transport facilitated by functionalized yet conductive carbon and lowly resistive cathode interphases, elevates the performance. This is evidenced by stable cycling at room temperature (22 °C) and elevated temperatures (60 °C), high rate capability, a Coulombic efficiency of 99.8%, and ≈100% capacity retention after 1000 cycles and >90% retention over 2000 cycles at 60 °C. Functionalized carbon‐mediated in situ cathode interfacial engineering offers a simple and scalable approach to designing durable ASSLB cathodes, with the potential for broader application across various NMC cathodes and compatible solid electrolytes.

Experimental and computational studies on oxygen functionalization of covalent triazine frameworks for enhanced hydrogen storage

We report the hydrogen (H2) storage performance of an oxygen-functionalized covalent triazine framework (O-CTF) measured at 77 K and up to 20 bars. The O-CTF was synthesized using a carboxylic acid-functionalized carbonitrile monomer via an ionothermal nitrile trimerization reaction. Despite its lowered specific surface area (599 m2/g vs. 756 m2/g) compared to CTF-1, O-CTF exhibited an enhanced H2 storage capacity of 4.34 wt.% at 20 bars, nearly 1.61 times as high than the 2.69 wt.% H2 storage capacity of CTF-1. Furthermore, O-CTF demonstrated a notable H2 storage capacity of 2.19 wt.% at 1 bar and 77 K, emphasizing its competitive performance among other porous polymeric materials. The superior H2 uptake performance of O-CTF, as demonstrated by density-functional theory (DFT) calculations performed using the M06-2X-D3/def2-TZVPD method, was attributed to its high heteroatom content, especially the presence of oxygen. Compared to CTF-1 with nitrogen as the heteroatom (18.97 wt.%), the high oxygen and nitrogen contents (27.16 and 11.83 wt.%, respectively) of O-CTF resulted in additional accessible adsorption sites, enhancing the electrostatic/dispersion interaction with H2 molecules and increasing the adsorption capacity.

Effect of mechanical compaction and nitrogen doping treatment on ultramicropore structure of biomass-based porous carbon and the mechanism of CO2 capture

In the preparation of biomass-derived porous carbon, targeting the enhancement of ultramicropore volume and understanding the effects of nitrogen doping on ultramicroporous structure are crucial for improving CO2 capture. Here, we prepared porous carbon using mechanical compaction and urea-assisted KOH activation of tobacco stem-derived hydrochar. The results showed that mechanical compaction increased the ultramicropore volume with little impact on oxygen content, leading to an increase in CO2 adsorption capacity, with a maximum adsorption capacity of 5.6mmol g−1 at 25℃ and 1 bar. In contrast, nitrogen doping negatively affected the ultramicropore structure and oxygen functionalities, resulting in a decrease in CO2 adsorption capacity. Furthermore, experimental and molecular simulation studies revealed that ultramicropore smaller than 0.5 nm predominantly determine the CO2 adsorption capacity at 0.15 bar and CO2/N2 selectivity. These findings provide theoretical and practical support for the development of efficient carbon-based CO2 adsorbents.

Ion Beam Implantation of Graphite Felt for Redox Flow Batteries: Role of Defects Versus Nitrogen Groups

Vanadium flow batteries (VFBs) are a promising solution to the growing demand for large-scale energy storage [1] . A critical component of VFBs are the electrodes, commonly manufactured from highly porous, carbon materials [2] . Carbon-based electrodes have good conductivity, high surface area, and are low-cost, however, they often exhibit poor activity for the vanadium redox reactions. The reactivity of electrode materials is of great interest, with previous research on carbon felt ascribing enhanced electrode reaction kinetics to the presence of oxygen functional groups (OFGs), nitrogen functional groups (NFGs), and/or carbon defects [3–6].In this study, catalytic sites were introduced into graphite felt using ion beam implantation to probe the effectiveness of specific active sites for the VFB. Specifically, N2 +- and Ne+-ion implantation are used to investigate the influence of introducing both NFGs and carbon defects versus carbon defects only. Polarisation curves and impedance measurements revealed that defects and edges sites introduced onto the electrode surface appear to be the relevant catalytic sites for facilitating the positive vanadium redox reaction. Raman spectroscopy and XPS helped to establish correlations between the surface chemistry and structure of graphite felt to electrode activity. Lower implantation fluences (< 1016 ion cm-2) were found to improve performance compared to pristine electrodes. In contrast, implantation at higher fluences resulted in the formation of amorphous carbon at the electrode surface, which was thought to result in a lower density of active defect sites and lower conductivity. Furthermore, this electrode modification technique was investigated on a scaled-up electrode geometry to assess its effectiveness for larger electrodes. Full- and half-cell measurements allowed for full-cell, positive half-cell, and negative half-cell performance to be independently investigated, whilst providing insight into performance-limiting factors. References K. Lourenssen, J. Williams, F. Ahmadpour, R. Clemmer, S. Tasnim. Vanadium redox flow batteries: A comprehensive review. J. Energy Storage 25 (2019) 100844.M.-S. Park, J. Ho Kim, M. Skyllas-Kazacos, K. Jae Kim, Y.-J. Kim. A technology review of electrodes and reaction mechanisms in vanadium redox flow batteries. J. Mater. Chem. A 3 (2015) 16913–16933.M. E. Lee, H.-J. Jin, Y. S. Yun. Synergistic catalytic effects of oxygen and nitrogen functional groups on active carbon electrodes for all-vanadium redox flow batteries. RSC Adv. 7 (2017) 43227–43232.L. Zeng, T. Zhao, L. Wei. Revealing the Performance Enhancement of Oxygenated Carbonaceous Materials for Vanadium Redox Flow Batteries: Functional Groups or Specific Surface Area? Adv. Sustainable Syst. 2 (2018) 1700148.H. Radinger, A. Ghamlouche, H. Ehrenberg, F. Scheiba. Origin of the catalytic activity at graphite electrodes in vanadium flow batteries. J. Mater. Chem. A 9 (2021) 18280–18293.S. C. Kim, J. Paick, J. S. Yi, D. Lee. Marked importance of surface defects rather than oxygen functionalities of carbon electrodes for the intrinsic vanadium redox kinetics in flow batteries. J. Power Sources 520 (2022) 230813.

Electrochemical Insights into Hydrogen Peroxide Generation on Carbon Electrodes: Influence of Defects, Oxygen Functional Groups, and Alkali Metals in the Electrolyte

Electrochemical Insights into Hydrogen Peroxide Generation on Carbon Electrodes: Influence of Defects, Oxygen Functional Groups, and Alkali Metals in the Electrolyte

Engineering MXene Surface via Oxygen Functionalization and Au Nanoparticle Deposition for Enhanced Electrocatalytic Hydrogen Evolution Reaction.

MXene, a family of 2D transition metal carbides and nitrides, presents promising applications in electrocatalysis. Maximizing its large surface area is key to developing efficient non-noble-metal catalysts for the hydrogen evolution reaction (HER). In this study, oxygen-functionalized Ti3C2Tx MXene (Ti3C2Ox) is synthesized and deposited gold nanoparticles (Au NPs) onto it, forming a novel composite material, Au-Ti3C2Ox. By selectively removing other functional groups, mainly -O functional groups are retained on the surface, directing electron transfer from Au NPs to MXene due to electronic metal-support interaction (EMSI), thereby improving the catalytic activity of the MXene surface. Additionally, the interaction between Au NPs and -O functional groups further enhanced the overall catalytic activity, achieving an overpotential of 62 mV and a Tafel slope of 40.1 mV dec-1 at a current density of -10 mA cm-2 in 0.5 m H2SO4 solution. Density functional theory calculations and scanning electrochemical microscopy with ≤150 nm resolution confirmed the enhanced catalytic efficiency due to the specific interaction between Au NPs and Ti3C2Ox. This work provides a surface modification strategy to fully utilize the MXene surface and enhance the overall catalytic activity of MXene-based catalysts.

Effects of combined anesthesia on pulmonary oxygenation function, hemodynamics, and respiratory compliance in elderly patients undergoing pulmonary lobectomy for lung cancer.

Traditional general anesthesia in elderly lung cancer patients undergoing pulmonary lobectomy may lead to hemodynamic fluctuations and postoperative complications. To optimize anesthesia efficacy, this study explores the application of combined anesthesia (general anesthesia combined with thoracic paravertebral block) in such surgeries. We evaluated the improvement of pulmonary oxygenation function, hemodynamic stability, and respiratory compliance in elderly lung cancer patients undergoing pulmonary lobectomy with combined anesthesia. This retrospective study analyzed 100 elderly lung cancer patients who underwent pulmonary lobectomy at our hospital from February 2020 to December 2023. Patients were divided into 2 groups: the control group received general anesthesia, while the treatment group received combined anesthesia (general anesthesia plus thoracic paravertebral block). By comparing intraoperative hemodynamic parameters, postoperative pulmonary oxygenation function, respiratory compliance, cognitive function, sleep quality, and postoperative complication rates between the 2 groups, we assessed the application efficacy of combined anesthesia. Compared to the control group, the treatment group exhibited better hemodynamic stability intraoperatively, significantly improved postoperative pulmonary oxygenation function and respiratory compliance. Additionally, patients in the treatment group showed faster recovery of cognitive function, better sleep quality, and a relatively lower incidence of postoperative complications. Combined anesthesia demonstrates unique advantages in pulmonary lobectomy for elderly lung cancer patients, optimizing intraoperative hemodynamic stability, promoting postoperative pulmonary function recovery, accelerating cognitive function recovery, improving sleep quality, and potentially reducing the risk of postoperative complications. This finding provides a new effective strategy for anesthesia management in elderly lung cancer patients.

Correlation between oxygenation function and laboratory indicators in COVID-19 patients based on non-enhanced chest CT images and construction of an artificial intelligence prediction model.

By extracting early chest CT radiomic features of COVID-19 patients, we explored their correlation with laboratory indicators and oxygenation index (PaO2/FiO2), thereby developed an Artificial Intelligence (AI) model based on radiomic features to predict the deterioration of oxygenation function in COVID-19 patients. This retrospective study included 384 patients with COVID-19, whose baseline information, laboratory indicators, oxygenation-related parameters, and non-enhanced chest CT images were collected. Utilizing the PaO2/FiO2 stratification proposed by the Berlin criteria, patients were divided into 4 groups, and differences in laboratory indicators among these groups were compared. Radiomic features were extracted, and their correlations with laboratory indicators and the PaO2/FiO2 were analyzed, respectively. Finally, an AI model was developed using the PaO2/FiO2 threshold of less than 200 mmHg as the label, and the model's performance was assessed using the area under the receiver operating characteristic curve (AUC), sensitivity and specificity. Group datas comparison was analyzed using SPSS software, and radiomic features were extracted using Python-based Pyradiomics. There were no statistically significant differences in baseline characteristics among the groups. Radiomic features showed differences in all 4 groups, while the differences in laboratory indicators were inconsistent, with some PaO2/FiO2 groups showed differences and others not. Regardless of whether laboratory indicators demonstrated differences across different PaO2/FiO2 groups, they could all be captured by radiomic features. Consequently, we chose radiomic features as variables to establish an AI model based on chest CT radiomic features. On the training set, the model achieved an AUC of 0.8137 (95% CI [0.7631-0.8612]), accuracy of 0.7249, sensitivity of 0.6626 and specificity of 0.8208. On the validation set, the model achieved an AUC of 0.8273 (95% CI [0.7475-0.9005]), accuracy of 0.7739, sensitivity of 0.7429 and specificity of 0.8222. This study found that the early chest CT radiomic features of COVID-19 patients are strongly associated not only with early laboratory indicators but also with the lowest PaO2/FiO2. Consequently, we developed an AI model based on CT radiomic features to predict deterioration in oxygenation function, which can provide a reliable basis for further clinical management and treatment.

Light‐Driven Site‐Selective Glycosylation of Native Carbohydrates

AbstractCarbohydrates constitute the largest source of biomass on Earth, but their synthetic modification is challenging due to their high content in oxygen functionalities. The site‐ and stereoselective modification of native sugars is a definite goal of glycochemistry research. Recent efforts to bypass the need for protecting groups, leveraging selective activation through photochemical mechanisms for site‐selective C−C bond formation from native sugars, are likely to largely impact all glycochemistry‐related areas. Davis, Koh, and co‐workers have recently presented their use of photocatalysis to develop a “cap and glycosylate” approach for the site‐ and stereoselective C‐glycosylation of native sugars. A modernized direct radical functionalization of in situ formed thioglycoside using photocatalysis was used in the synthetic manipulation of unprotected carbohydrates. This allowed reaching complex saccharides, and post‐translational modification of proteins.

Light-Driven Site-Selective Glycosylation of Native Carbohydrates.

Carbohydrates constitute the largest source of biomass on Earth, but their synthetic modification is challenging due to their high content in oxygen functionalities. The site- and stereoselective modification of native sugars is a definite goal of glycochemistry research. Recent efforts to bypass the need for protecting groups, leveraging selective activation through photochemical mechanisms for site-selective C-C bond formation from native sugars, are likely to largely impact all glycochemistry-related areas. Davis, Koh, and co-workers have recently presented their use of photocatalysis to develop a "cap and glycosylate" approach for the site- and stereoselective C-glycosylation of native sugars. A modernized direct radical functionalization of in situ formed thioglycoside using photocatalysis was used in the synthetic manipulation of unprotected carbohydrates. This allowed reaching complex saccharides, and post-translational modification of proteins.

Research on modeling method of providing oxygen functional architecture based on model

Abstract The provision of oxygen is an important function of commercial aircraft, which is defined as providing the necessary oxygen for the safety of everyone on board, including crew oxygen, passenger oxygen, and portable oxygen. This article adopts SysML modelling language and proposes a model-based architecture modelling method for providing oxygen function for commercial aircraft. It transforms traditional experience and document-based system engineering work into functional architecture system engineering work, and utilises the correlation and traceability relationships of models to achieve state machine modelling for providing oxygen functional architecture. Through simulation verification, the functional architecture modelling method that provides oxygen can be effectively applied to the architecture of other systems.

ZIF-67 derivatives of NiCo2S4 Decorated in Salen-Complex Amine Functionalization GO Layers for High-Performance Applications in Supercapacitor Devices.

The study develops polyamine-functionalized graphene oxide-supported NiCo2S4 nanomaterial using a metal-organic framework (MOF). This modification adds free amines and oxygen functionality to the graphene oxide electrode surface, resulting in the decrease in the 2 theta value from 11.2 to 7.1 and an increase in the interlayer spacing value from 1.4 to 7.8 nm. This modification enhances the surface properties, leading to improved wettability and dispersion stability. Additionally, bimetallic nanoparticles of NiCo2S4, synthesized via the ZIF-67 MOF template, further enhance performance. Analysis confirms the successful fabrication of ZIF-67/f-GO/NiCo2S4 electrode material through various techniques such as XPS spectra, FE-SEM, XRD, and Raman spectra. The resulting Salen-fGO@NiCo2S4 composite exhibits impressive specific capacitance, reaching 2581.65 F g-1 at 10 A g-1 with 82% capacity retention after 5000 cycles. Employing this composite in a hybrid supercapacitor yields remarkable energy and power densities of 40 and 920 W kg-1, individually, while maintaining 74% capacity retention rate at 10 A g-1. These findings offer promising prospects for advanced energy storage applications.

Trajectories and sex differences of brain structure, oxygenation and perfusion functions in normal aging

Background: Brain structure, oxygenation and perfusion are important factors in aging. Coupling between regional cerebral oxygen consumption and perfusion also reflects functions of neurovascular unit (NVU). Their trajectories and sex differences during normal aging important for clinical interpretation are still not well defined. In this study, we aim to investigate the relationship between brain structure, functions and age, and exam the sex disparities.Method: A total of 137 healthy subjects between 20∼69 years old were enrolled with conventional MRI, structural three-dimensional T1-weighted imaging (3D-T1WI), 3D multi-echo gradient echo sequence (3D-mGRE), and 3D pseudo-continuous arterial spin labeling (3D-pCASL). Oxygen extraction fraction (OEF) and cerebral blood flow (CBF) were respectively reconstructed from 3D-mGRE and 3D-pCASL images. Cerebral metabolic rate of oxygen (CMRO2) were calculated as follows: CMRO2=CBF·OEF·[H]a, [H]a=7.377 μmol/mL. Brains were segmented into global gray matter (GM), global white matter (WM), and 148 cortical subregions. OEF, CBF, CMRO2, and volumes of GM/WM relative to intracranial volumes (rel_GM/rel_WM) were compared between males and females. Generalized additive models were used to evaluate the aging trajectories of brain structure and functions. The coupling between OEF and CBF was analyzed by correlation analysis. P or PFDR < 0.05 was considered statistically significant.Results: Females had larger rel_GM, higher CMRO2 and CBF of GM/WM than males (P < 0.05). With control of sex, CBF of GM significantly declined between 20 and 32 years, CMRO2 of GM declined subsequently from 33 to 41 years and rel_GM decreased significantly at all ages (R2 = 0.27, P < 0.001; R2 = 0.17, P < 0.001; R2 = 0.52, P < 0.001). In subregion analysis, CBF declined dispersedly while CMRO2 declined widely across most subregions of the cortex during aging. Robust negative coupling between OEF and CBF was found in most of the subregions (r range = -0.12∼-0.48, PFDR < 0.05).Conclusion: The sex disparities, age trajectories of brain structure and functions as well as the coupling of NVU in healthy individuals provide insights into normal aging which are potential targets for study of pathological conditions.

Efficient adsorption of antibiotics using MXene nanosheet delaminated by Taylor vortex flow

MXenes are emerging as a promising class of two-dimensional (2D) adsorbents suitable for various environmental applications. The present study explores the use of Ti3C2Tx MXene nanosheet, delaminated by Taylor vortex flow (TVF), namely d-MXene-CT, as an efficient adsorbent for fluoroquinolones (FQs). The TVF induced in the gap between two coaxial cylinders of the Couette-Taylor reactor enhances the delamination process, yielding larger and thinner MXene nanosheets with a specific surface area 12 fold higher than that of nanosheets delaminated by turbulent eddy flow (TEF), namely d-MXene-MT in a conventional mixing tank (MT) reactor. As a result, the d-MXene-CT exhibited superior adsorption performance, with removal capacity for ciprofloxacin (CIP) of 349 mg/g and for levofloxacin (LEV) of 290.51 mg/g, representing 40 ∼ 60 % improvement over d-MXene-MT (249 mg/g for CIP and 180.22 mg/g for LEV). The adsorption process follows the pseudo-second-order kinetics model and fits the Langmuir isotherm, indicating the involvement of a monolayer chemisorption mechanism. Further investigation revealed that the removal of CIP and LEV was mainly driven by electrostatic attraction between oxygen functionality of MXene and protonated nitrogen group of FQs. The study highlights the potential of d-MXene-CT as a promising adsorbent for treating (FQs) from contaminant water.