Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Wireless modulation of magneto-responsive Schwann cells and DRG via integrating into topological electrospun ovalbumin scaffolds under external magnetic fields","authors":"Huoyun Shen ,&nbsp;Yuqing Shang ,&nbsp;Mingzhu Jia ,&nbsp;Hongxia Gao ,&nbsp;Lele Wang ,&nbsp;Yaqiong Liu ,&nbsp;Haoran Wang ,&nbsp;Zhenhua Gong ,&nbsp;Nana Jin ,&nbsp;Guicai Li","doi":"10.1016/j.colsurfa.2025.137826","DOIUrl":"10.1016/j.colsurfa.2025.137826","url":null,"abstract":"<div><div>Functional reconstruction following peripheral nerve injury (PNI) remains a critical clinical challenge. Magnetic stimulation and magnetically responsive neural cells can promote peripheral nerve regeneration and functional recovery, anisotropic topological structures facilitate directional nerve migration and enhance the regeneration process, while the combined application of magnetic stimulation, magnetically responsive neural cells, and anisotropic topology for PNI repair has rarely been reported. In this study, anisotropic topological ovalbumin (OVA) scaffolds were firstly fabricated via electrospinning, and magnetically responsive neural cells were engineered through incorporation of 3-aminopropyltriethoxysilane (APTES) -modified magnetic nanoparticles, which were subsequently integrated into the OVA topological scaffolds and stimulated by external magnetic field. The physicochemical properties—including morphology, mechanical properties, hydrophilicity, and biocompatibility—were systematically characterized. The behaviors of magnetized dorsal root ganglion (DRG) neurons and Schwann cells (RSC 96) were assessed under a static magnetic field. Molecular mechanisms were further investigated using RT-qPCR and Western blot (WB) analyses. The results demonstrated that under directional guidance of an external magnetic field, anisotropic topological scaffolds loaded with magnetically responsive neural cells, synergistically provided physical cues (topological structure), biochemical cues (magnetic stimulation), and a regenerative microenvironment. This combination effectively promoted directional migration of magnetized DRG neurons, oriented axonal growth, and enhanced proliferation, migration, and elongation of RSC 96 cells. Significant upregulation of genes associated with axonal guidance, proliferation, migration, axonal regeneration, and magnetoreception (Cntn2, Calm3, SERCA2a, Dpyd) was observed, along with increased expression of Growth-associated protein 43 (GAP43) in neurons. These effects collectively enabled wireless, non-invasive, and remote directional guidance of RSC 96 and neurons, facilitating improved reconnection at nerve defect sites. The study thus provides theoretical and experimental foundations for developing novel artificial nerve graft platforms.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137826"},"PeriodicalIF":5.4,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective gas sensitivity characterisation based on transition metal doped WS₂ single molecule membrane and its application in lung cancer breath marker detection","authors":"Pengfei Jia ,&nbsp;Yujie Chen ,&nbsp;Wenhao Jiang ,&nbsp;Qingbin Zeng ,&nbsp;Min Xu ,&nbsp;Yunhan Jia","doi":"10.1016/j.colsurfa.2025.137846","DOIUrl":"10.1016/j.colsurfa.2025.137846","url":null,"abstract":"<div><div>Lung cancer is the leading cause of cancer-related deaths worldwide, and innovation in early diagnostic techniques is urgently needed. In recent years, novel sensing technologies based on the detection of volatile organic compounds (VOCs) in exhaled breath have shown great potential in the field of early lung cancer screening due to their advantages of being non-invasive, convenient, and highly sensitive. In this study, the sensing properties of transition metal (Cu, Ag, Pt)-doped WS₂ monolayers for lung cancer-specific VOCs were systematically investigated through the innovative application of density functional theory. The results demonstrate that all three doped systems exhibit excellent thermal stability, and their VOCs adsorption capacity is significantly enhanced compared with that of pristine WS₂. This ensures stable desorption and sensing performance of the material in high-temperature operating environments. Notably, the Ag-WS₂ system performs particularly well in key performance indicators such as charge transfer, bandgap modulation, and recovery time, showing superior adsorption properties for four typical lung cancer biomarkers. More importantly, the Ag-WS₂ system exhibits a unique CO₂-repelling property, which significantly improves detection accuracy. This effectively addresses the common issue of cross-sensitivity interference in traditional methods and provides a theoretical basis for the accurate qualitative analysis of lung cancer-specific VOC mixtures. These research findings not only pave the way for the development of novel early diagnostic techniques for lung cancer but also provide an important scientific reference for preventive lung cancer screening.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137846"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lightweight and robust aerogel assembling with aramid nanofibers and biomass-derived magnetic carbon nanoparticles toward advanced microwave absorption and infrared stealth","authors":"Min-yu Li ,&nbsp;Yuan-lin Yan ,&nbsp;Xing-hai Zhou ,&nbsp;Yuan Gao ,&nbsp;Gang Wang ,&nbsp;Li-hua Lyu ,&nbsp;Yong-fang Qian ,&nbsp;Shang-ru Zhai ,&nbsp;Hong-zhu Liu ,&nbsp;Zhong-gang Wang","doi":"10.1016/j.colsurfa.2025.137797","DOIUrl":"10.1016/j.colsurfa.2025.137797","url":null,"abstract":"<div><div>Carbon aerogel exhibits unique advantages in microwave absorption and infrared stealth applications owing to its ultralow density, high porosity, and continuous three-dimensional conductive networks. Nevertheless, developing carbon aerogel with excellent mechanical robustness to meet the practical application demands remains a significant challenge. Herein, a lightweight and robust aerogel assembling with biomass-derived magnetic nickel/carbon (Ni/C) nanoparticles and aramid nanofibers (ANF) is successfully constructed. The magnetic Ni/C nanoparticles are synthesized via an innovative wet-spraying technique that fully exploits the strong chelation capability of biomass sodium alginate toward metallic nickel ions. After high-temperature carbonization, this process yields magnetic Ni/C nanoparticles with high specific surface area, and offers advantages of simple processing procedures and high yield. Concurrently, the ANF is fabricated by a scalable top-down deprotonation approach, acting as a supportive skeleton to ensure structural integrity and mechanical robustness. The optimized aerogel delivers a unique lamellar network architecture with an ultra-low density of 0.0168 g/cm³ and outstanding elastic recovery exceeding 95 % after 100 cycles at 40 % strain. Consequently, the optimized aerogel delivers remarkable electromagnetic microwave absorption (EMA) performance, achieving a minimum reflection loss (RL_min) of −49.497 dB at 14.87 GHz, and an effective absorption bandwidth (EAB) of 5.41 GHz at a thickness of 2.0 mm. Simultaneously, the optimized aerogel exhibits excellent infrared (IR) stealth capability. After being exposed to IR radiation for 60 min on a heating platform at 80 ℃, the surface temperature of the optimized aerogel only rise from 25.3 ℃ to 26.9 ℃. This study provides a strategic paradigm for designing aerogel material with balanced mechanical properties and multi-functional performance.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137797"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Injectable poly(ethylene glycol)/chitosan-based in situ hydrogel with wonderful mechanical property for wound dressing","authors":"Fan Li ,&nbsp;Yimeng Liu ,&nbsp;Jun Wang ,&nbsp;Yu Zhou ,&nbsp;Junjie Tan ,&nbsp;Hongxiang Chen ,&nbsp;Hongye Yan ,&nbsp;Xinghua Liao","doi":"10.1016/j.colsurfa.2025.137841","DOIUrl":"10.1016/j.colsurfa.2025.137841","url":null,"abstract":"<div><div>To increase the water solubility of chitosan and enhance the mechanical strength of chitosan-based <em>in-situ</em> hydrogel, poly(ethylene glycol) monomethyl ether-grafted chitosan (PCS) was fabricated by a simple and efficient modification method with hexamethylene diisocyanate (HDI) as bridging agent, and then a series of poly(ethylene glycol)/chitosan-based <em>in situ</em> hydrogels (PCS@gel) were prepared from PCS and aldehyde-terminated poly(ethylene glycol) (DF-PEG) as cross-linking agent. The resultant PCS shows good water solubility in the absence of acid and its solid content is up to 8 wt%. By studying the effects of the mass ratio of PCS to DF-PEG and their solid content on the gel time and properties of PCS@gel, the results demonstrate that increasing the solid content of precursor solution can significantly shorten the gel time and improve its mechanical properties and adhesion strength. When the mass ratio of PCS to DF-PEG is 1:1, PCS@gel has a shorter gel time and higher mechanical strength. While the mass ratio of PCS to DF-PEG is 5:1, PCS@gel has better adhesion properties. Besides, PCS@gel also has good self-healing ability, antibacterial effect, low cytotoxicity and the ability to promote cell migration. Therefore, PCS@gel will have a promising application as a wound dressing.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137841"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical Surface-Enhanced Raman Spectroscopy of acetaminophen: Adsorption dynamics and charge transfer mechanism","authors":"Matěj Kmetík ,&nbsp;Ivan Kopal ,&nbsp;Karolína Salvadori ,&nbsp;Gabriela Broncová ,&nbsp;Marcela Dendisová","doi":"10.1016/j.colsurfa.2025.137801","DOIUrl":"10.1016/j.colsurfa.2025.137801","url":null,"abstract":"<div><div>Electrochemical Surface-Enhanced Raman Spectroscopy (EC-SERS) enables detailed study of molecular adsorption and charge transfer at metal surfaces. This work investigates acetaminophen (AAP) adsorption on a roughened copper electrode using EC-SERS combined with cyclic voltammetry (CV). CV confirms AAP’s electrochemical stability within −1000 to 0 mV, allowing analysis of adsorption without redox interference. AAP rapidly adsorbs within eight CV cycles (∼13 min), forming stable surface complexes primarily through amine group interactions. Desorption is slower, indicated by gradual changes in electrochemical current and Raman signal during reverse scans. The highest SERS enhancement occurs at −600 mV, where optimal charge transfer and molecular orientation maximize signal intensity. Density functional theory calculations support experimental findings, confirming the formation of metal-molecule “complexes” consistent with observed vibrational modes. The study highlights the influence of applied potential on adsorption/desorption dynamics and demonstrates copper’s promise as an affordable EC-SERS substrate. Despite lower enhancement compared to noble metals, copper’s biocompatibility and surface versatility make it suitable for biomedical and environmental sensing applications. These insights contribute to the advancement of electrochemical sensors based on EC-SERS for pharmaceutical and bioanalytical uses.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137801"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the enzyme-like acidic microenvironment in FER zeolite for N-alkylation of aniline with benzyl alcohol","authors":"Xinghao Shi,&nbsp;Lei Chen,&nbsp;Biao Meng,&nbsp;Xiaoling Liu,&nbsp;Jiao Wei,&nbsp;Meng Xu,&nbsp;Xinyu Zhu,&nbsp;Yang Yang,&nbsp;Yu Zhou,&nbsp;Jun Wang","doi":"10.1016/j.colsurfa.2025.137847","DOIUrl":"10.1016/j.colsurfa.2025.137847","url":null,"abstract":"<div><div>The ordered microchannels of zeolites provide a feasible opportunity to modulate the adsorption and diffusion of guest molecules depending on the matching of the molecular structure and porous characteristics, encouraging the exploration of enzyme-like specificity of zeolites in heterogeneous catalysis. In this work, we investigated the activity of FER, MFI, MOR, and BEA zeolites in the amination of aniline with benzyl alcohol. The influence of acid properties, morphology, and topology-related adsorption behavior was specially studied to uncover how the micro-environment determined the activities from the molecular level through Rietveld refinement. FER zeolites were found extremely active in the amination to give the 99 % conversion of aniline and 98.7 % yield of secondary amines. The T1 site in the cross-section of the 10-membered-ring (MR) channel and FER cavity was found as the active site. Aniline and benzyl alcohol adsorption on the T1 site was respectively preferred in the FER cavity and 10-MR channel, increasing the collision probability and thus enhancing the activity. This unique molecular recognition behavior in the confined space of zeolite is responsive to the remarkable and stable amination activity.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137847"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the adsorption mechanism of green and efficient flotation reagents in the reverse flotation separation of limonite and quartz","authors":"Jianwei Yu ,&nbsp;Jin Yao ,&nbsp;Wanzhong Yin ,&nbsp;Xiufeng Gong ,&nbsp;Xueming Yin ,&nbsp;Xu Zhao","doi":"10.1016/j.colsurfa.2025.137849","DOIUrl":"10.1016/j.colsurfa.2025.137849","url":null,"abstract":"<div><div>This study achieved efficient reverse flotation separation of limonite and quartz using a green and efficient flotation reagent, polyaspartic acid (PASP), in the dodecylamine (DDA) flotation system. The flotation test found that under the conditions of pH 6, DDA concentration of 75 mg/L, and PASP concentration of 5 mg/L, the most significant flotation difference of 86.02 % was achieved between limonite and quartz. The contact angle test showed that after the simultaneous action of DDA and PASP, the contact angle of limonite decreased by 26.93° compared to DDA alone, while the contact angle of quartz increased by 8.68°. Zeta potential and infrared spectroscopy analysis indicated that PASP strongly adsorbed on limonite surface, hindering the adsorption of DDA on limonite surface, and weakly adsorbing on quartz surface, slightly affecting the adsorption of DDA on the surface of quartz. XPS analysis showed that PASP had a strong adsorption effect on Fe sites on limonite, while its effect on Si sites on quartz surface was weak, indicating selective adsorption characteristics on limonite. Extended Derjaguin–Landau–Verwey–Overbeek (E–DLVO) theoretical calculations showed that the introduction of PASP transformed the total mutual attraction energy between limonite particles and bubbles in the DDA system into total mutual repulsion energy, while the total mutual attraction energy between quartz particles and bubbles remained basically unchanged, causing the sinking of limonite and the rising of quartz, which was beneficial for the reverse flotation separation of limonite and quartz.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137849"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144696455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and facile synthesis of CoFe nanoparticles functionalized with boron and nitrogen co-doped ultra-thin mesoporous carbon nanosheets: The advanced glucose and hydrogen peroxide electrochemical sensors","authors":"Xinyan Xiong ,&nbsp;Zhuang Wang ,&nbsp;Xiaoyu Li ,&nbsp;Mian Li ,&nbsp;Xiangjie Bo","doi":"10.1016/j.colsurfa.2025.137852","DOIUrl":"10.1016/j.colsurfa.2025.137852","url":null,"abstract":"<div><div>Cobalt (Co)-based bimetallic alloys, formed by incorporating a secondary metal with Co, demonstrate improved catalytic performance for glucose/H₂O₂ sensing. Nevertheless, limitations related to their porous structures and the availability of active sites have led to a restricted linear detection range. Designing three-dimensional (3D) architectures composed of orderly stacked two-dimensional (2D) carbon nanosheets (NSs) reveals abundant hierarchical pores and three-phase interfaces, which facilitate efficient mass and electron transfer while simultaneously enhancing the dispersion of additional active centers. The present study proposes a novel 3D hierarchically porous 'honeycomb' structure self-assembled from numerous cobalt iron (CoFe) nanoparticles integrated with 2D ultrathin NSs doped with boron (B) and nitrogen (N) (referred to as CoFe-BN-CNSs_T NSs). The optimized CoFe-BN-CNSs₉₀₀ NSs exhibit excellent electrical conductibility, abundant mesoporous structures, and a remarkably high doping level of B/N electrochemically active sites (9.71 atom %). The CoFe-BN-CNSs₉₀₀ NSs-based H₂O₂ sensor displays a wide linear detection range from 0.04 to 16.10 mM, along with a high sensitivity of 127.20 uA cm⁻² mM⁻¹. For glucose detection, the sensor exhibits a wide linear range of 0.01–9.35 mM and a high sensitivity of 118.90 uA cm⁻² mM⁻¹. Notably, the CoFe-BN-CNSs₉₀₀ NSs-derived sensors for H₂O₂ and glucose detection demonstrate excellent reproducibility, stability, and strong resistance to interference from electroactive molecules and inorganic salts. In particular, CoFe-BN-CNSs₉₀₀ NSs-based electrochemical sensors demonstrate remarkable accuracy in the quantification of H₂O₂ concentrations in disinfectant solutions and glucose levels in serum samples, thereby highlighting their potential for practical applications. This study presents a novel approach for the sensitive and rapid detection of H₂O₂ and glucose in real-world samples.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137852"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of advanced composites as some corrosion protection coatings for 3D-printed H13 steel in 1M HCl: Elaboration, experimental and theoretical studies","authors":"Rachid Hsissou ,&nbsp;Ilham Aichouch ,&nbsp;Anouar El Magri ,&nbsp;Konstantin P. Katin ,&nbsp;Elyor Berdimurodov ,&nbsp;Fazliddin Jalilov ,&nbsp;Fouad Benhiba ,&nbsp;Driss Ouzebla","doi":"10.1016/j.colsurfa.2025.137848","DOIUrl":"10.1016/j.colsurfa.2025.137848","url":null,"abstract":"<div><div>The present study highlights the evaluation of corrosion protection combating potential of two innovative composite coatings against 3D-printed H13 steel in 1 M HCl solution with investigation of experimental studies, and mathematical approaches (density functional theory (DFT), and molecular dynamics (MD) simulations). Two composite coatings were elaborated based N2,N4,N6-tris(2-(oxiran-2-yl methoxy) ethyl)-N2,N4,N6-tris(oxiran-2-yl methyl)-2.4.6-triamine-1,3,5-triazine (ERT) as an epoxy resin, diaminobiphenyl (DABP) as a curing agent, and titanium dioxide (TiO₂) as a reinforcing filler. These composites were characterized through using different technique include XRD, FTIR, SEM, EDS, and AFM. The extreme protection efficiencies of 95.93 % (PDP), 95.44 % (EIS), and 93.84 % (WL) was recorded for ERT/DABP/TiO₂ composite formulated by TiO₂. The main findings of the incorporation of TiO2 in the elaborated composite is considered responsible for the best adherence protective coating formed on the 3D printed H13 steel surface. Electrochemical studies showed that the incorporation of TiO₂ significantly reduced the corrosion current density from 2330.507 (bare steel) to 94.799 µA/cm², and enhanced the polarization resistance from 22.57 Ω·cm² to 495.4 Ω·cm². SEM investigation was involved to outline the degradation of H13 steel surface when subjected to elaborated composites. EDS evaluated the possible presence of polymer coatings film over H13 steel surface. The mathematical models have been acclimated additionally as supporting evidence for experimental data. These findings confirm that the TiO₂-enhanced elaborated composite provides an effective and durable corrosion barrier, with promising industrial applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137848"},"PeriodicalIF":4.9,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of chlorite-based magnetic composite for treatment of dodecylamine-containing beneficiation wastewater","authors":"Lixiang Fu ,&nbsp;Jingfeng He ,&nbsp;Bin Yang ,&nbsp;Zilin Zhang ,&nbsp;Wenqi Gong","doi":"10.1016/j.colsurfa.2025.137796","DOIUrl":"10.1016/j.colsurfa.2025.137796","url":null,"abstract":"<div><div>The effective removal of dodecylamine from beneficiation wastewater is of great significance. Currently, materials such as activated carbon or montmorillonite used for treating amine-containing wastewater have limitations such as limited adsorption efficiency, insufficient selectivity, and difficulty in recovery. Therefore, this study synthesized a novel chlorite-based magnetic composite (CBMC) by loading CoFe₂O₄ onto the surface of chlorite via the sol-gel method for the removal of dodecamine (DDA). Optimal adsorption conditions were determined experimentally, with the best results achieved at an initial dodecylamine concentration of 20 mg/L, an adsorbent dosage of 1.5 g/L, a pH of 7.0, and an adsorption duration of 60 mins. Under these conditions, the adsorption capacity and removal efficiency of dodecylamine were 12.2 mg/g and 91.5 %, respectively. Characterization results of CBMC indicated that it possessed a stable structure and excellent magnetic properties (magnetic saturation intensity of 14.84 emu/g), as well as a much higher specific surface area (32.67 m²/g) than chlorite (1.87 m²/g). The adsorption processes conformed to the Freundlich isotherm model and pseudo-second-order kinetic model, with fitting coefficients (R²) of 0.9993 and 0.9943, respectively. This indicated that dodecylamine adsorbed onto the CBMC surface forming a hybrid multilayer structure with the simultaneous presence of physical and chemical adsorption, influenced by liquid film diffusion behavior (R² = 0.9764) and intra-particle diffusion (<span><math><msubsup><mrow><mi>R</mi></mrow><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></msubsup></math></span> = 0.9886, <span><math><msubsup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow><mrow><mn>2</mn></mrow></msubsup></math></span> = 0.9831). Thermodynamic analysis indicated that the adsorption process was spontaneous, endothermic, and entropy-driven. Additionally, CBMC exhibited excellent recycling performance, maintaining over 80 % removal efficiency for dodecylamine after three cycles, and demonstrated selective adsorption capacity, achieving 76.56 % removal efficiency in the presence of calcium and magnesium ions. This provides a highly selective and easily recoverable adsorbent material for treating amine-containing beneficiation wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137796"},"PeriodicalIF":5.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}