Journal of Colloid and Interface Science最新文献

{"title":"Intercalation-induced electronic reconstruction: Unlocking stable 1T-MoS2 with expanded interlayers for lithium-ion batteries","authors":"Lianyu Zhao ,&nbsp;Yishan Wang ,&nbsp;Guangwu Wen ,&nbsp;Xueqian Zhang ,&nbsp;Xiaoxiao Huang","doi":"10.1016/j.jcis.2025.137947","DOIUrl":"10.1016/j.jcis.2025.137947","url":null,"abstract":"<div><div>Metal-phase molybdenum disulfide (1T-MoS₂), as a layered material, has attracted much attention in recent years due to its excellent electrical conductivity and lithium storage capacity. Although various methods have been applied to optimize the electrochemical properties of MoS₂, how to further enhance its performance by modulating its interlayer structure and electronic properties is still a problem waiting to be solved. In this study, the modulation effects of different metal ions (Mg/Li/Ni) on 1 T-MoS₂ were explored by the metal ion intercalation method, and Mg intercalation was proposed as a new strategy to enhance the electrochemical performance of 1T-MoS₂. Compared with Li and Ni, Mg could more significantly reduces the interlayer expansion of MoS₂, stabilizes its 1T phase, and promotes the rapid diffusion of lithium ions through its unique multi-electron storage effect and strong ion diffusion mechanism. Through a combination of density-functional theory (DFT) calculations and electrochemical tests, it is verified that the Mg intercalation significantly enhances both the ionic conductivity and cycling stability of MoS₂ through the mechanisms of electronic structure modulation and interlayer spacing expansion. The electrochemical results show that the MoS₂ with Mg intercalation reaches a high specific capacity of 2682 mAh g⁻¹ after 400 cycles at 0.5 A g⁻¹, which is superior to that of the MoS₂ with Li (1006 mAh g⁻¹) and Ni (1058 mAh g⁻¹) intercalation. This study provides a new idea for the further design of highly efficient and stable anode materials for Li-ion batteries (LIBs).</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137947"},"PeriodicalIF":9.4,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NiO-Ni2P/C3N4 heterostructures with synergistic adsorption-electrocatalysis functions for suppressing polysulfide shuttle effect in lithium sulfur batteries","authors":"Yaolin Hou ,&nbsp;Jolla Kullgren ,&nbsp;Lei Han ,&nbsp;Pengyuan Qian ,&nbsp;Wei Yuan ,&nbsp;Jia Liu ,&nbsp;Haiming Xie ,&nbsp;Jiefang Zhu","doi":"10.1016/j.jcis.2025.137972","DOIUrl":"10.1016/j.jcis.2025.137972","url":null,"abstract":"<div><div>Lithium-sulfur (Li-S) batteries, renowned for their exceptional theoretical energy density, are positioned as a leading candidate for future energy storage systems, offering a potential pathway to overcome the energy density limitations of conventional lithium-ion batteries. Nevertheless, the notorious lithium polysulfides (LiPSs) shuttle effect and sluggish redox kinetics hinder their practical application. To resolve these challenges, we report a novel NiO-Ni₂P/C₃N₄ heterostructure synthesized via an in-situ phosphation process. Herein, we present an in situ phosphorylation strategy for the construction of NiO-Ni₂P heterojunctions anchored on a conductive C₃N₄ substrate (NiO-Ni₂P/C₃N₄) for further integration into commercial polypropylene (PP) separator (denoted as NiO-Ni₂P/C₃N₄@PP). Mechanistic studies demonstrated that the NiO phase facilitated strong chemisorption of LiPSs, while the Ni₂P component reduced the energy barrier for Li₂S dissolution through optimised d-band electron transfer. Concurrently, the C₃N₄ framework enhanced the interfacial charge transfer and significantly reduced the charge transfer resistance. Benefiting from the synergistic “adsorption-transformation-conduction” triple-function, the cells with the NiO-Ni₂P/C₃N₄@PP separator exhibit remarkable cycling stability (over 300 cycles at 3C) and outstanding rate capability (82.5 % capacity retention after 200 cycles at 5C). This work provides atomic-level insights into the engineering of multi-step sulfur electrochemical heterostructures, providing a generic design paradigm for high-energy metal-sulfur batteries.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137972"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"N-methyl-2-pyrrolidone (NMP)-solvated LiNO3 in carbonate electrolyte and the synergistic effects of LiNO3, NMP and fluoroethylene carbonate on lithium electrodes","authors":"Qiuyu Jia ,&nbsp;Longfei An ,&nbsp;Heng Zhang ,&nbsp;Yuqi Jiang ,&nbsp;Aiping Jin ,&nbsp;Luying He ,&nbsp;Weiming Wang ,&nbsp;Jun Xiong ,&nbsp;Junjun Peng ,&nbsp;Ming Li ,&nbsp;Linghui Yu","doi":"10.1016/j.jcis.2025.137971","DOIUrl":"10.1016/j.jcis.2025.137971","url":null,"abstract":"<div><div>The implementation of rechargeable high-energy lithium metal batteries is hindered by the instability of lithium electrodes. The electrolyte additive, LiNO₃, can significantly improve the stability of lithium electrodes. However, LiNO₃ has very low solubility in carbonate electrolytes which are widely used in commercial lithium-ion batteries. Herein, we introduce <em>N</em>-methyl-2-pyrrolidone (NMP) as a carrier solvent into diethyl carbonate (DEC)-based electrolyte to solvate and dissolve LiNO₃. It is found that, in LiFSI/DEC electrolytes, interactions between LiNO₃, NMP, and fluoroethylene carbonate (FEC) reorganize the solvation structure: DEC, FEC, NMP, and NO₃^– are involved in coordination interactions, while FSI- ions mainly remain free. This unique configuration induces synergistic effects, achieving a Coulombic efficiency (CE) of 98.4%. Surface analysis reveals a composite solid electrolyte interphase (SEI) layer comprising Li₂CO₃, RCO₂Li, Li_xN, LiF, and a rarely reported F-containing strong ionic compound. Such an SEI layer is found to be more protective and more favorable for improving the CE and kinetics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137971"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering cobalt nickel oxide nanowires embedded in tungsten disulfide/reduced graphene oxide hybrid composites for supercapacitor applications and overall water-splitting reactions","authors":"Sajjad Hussain ,&nbsp;Dhanasekaran Vikraman ,&nbsp;Zeesham Abbas ,&nbsp;Zulfqar Ali Sheikh ,&nbsp;Sikandar Aftab ,&nbsp;Iftikhar Hussain ,&nbsp;Shoyebmohamad F. Shaikh ,&nbsp;Hyun-Seok Kim ,&nbsp;Deok-Kee Kim ,&nbsp;Jongwan Jung","doi":"10.1016/j.jcis.2025.137965","DOIUrl":"10.1016/j.jcis.2025.137965","url":null,"abstract":"<div><div>This paper presents the fabrication of hierarchical hollow 3D nanowires-like cobalt nickel oxide nanowires (NWs) embedded in tungsten disulfide/reduced graphene oxide hybrid (CoNiO₂@WS₂/rGO) composite through a facile hydrothermal process.<!--> <!-->The interaction between the 3D hollow WS₂/rGO skeleton network and the well-defined CoNiO₂ NWs enabled the remarkable electrochemical supercapacitor performances constructed with an enriched specific capacity (515C/g at 0.5 A/g) and superior cycling solidity (97.5 %). Asymmetric device assembled engaging the CoNiO₂@WS₂/rGO composite displayed a 236F/g specific capacitance at 1 A/g with ∼74 Wh/kg energy density at 2.4 kW/kg power density along with a high cycling stability (95.2 %). Furthermore, CoNiO₂@WS₂/rGO composite possessed bundles of pores with strong interfacial connection, and this enabled a large accessible surface area on the nanowires and facilitated the release of gas bubbles, resulting in excellent oxygen evolution and hydrogen evolution kinetics with a small overpotential (<em>η</em>₁₀ <!-->=<!--> <!-->195 and 33 mV, respectively). Assembled CoNiO₂@WS₂/rGO (+/-) electrolyzer achieved a current density of 10 mA<!--> <!-->cm⁻² at a minimal cell voltage<!--> <!-->of 1.43 with long-span strength. Additionally, theoretical computation studies confirmed that the exceptional catalytic efficacy of the fabricated catalyst could be attributed to the transfer of charge from WS₂/rGO to CONiO₂ NWs.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137965"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel-iron alloy films electrodeposited from metal salt-l-serine deep eutectic solvent for alkaline oxygen evolution reaction","authors":"Yun He ,&nbsp;Zheng Wang ,&nbsp;Zhikai Hu ,&nbsp;Yanling Hu ,&nbsp;Xinxin Fan ,&nbsp;Shuling Liu ,&nbsp;Chao Wang","doi":"10.1016/j.jcis.2025.137911","DOIUrl":"10.1016/j.jcis.2025.137911","url":null,"abstract":"<div><div>Active and stable electrocatalysts for oxygen evolution reaction (OER) is crutial in the widespread application of hydrogen production from water electrolyzers. Here, deep eutectic solvents formed from metal chlorides and <span>l</span>-serine are utilized as the electrolyte to deposit metal films (Ni, Fe, and Ni-Fe alloys) under potentiostatic conditions onto nickel foam (NF) substrate. The deposited films are characterized, and the Ni-Fe alloy films constituting of nanometer-sized crystalline regions. Electron interaction between Ni and Fe is observed. In 1 M KOH, Ni-Fe/NF requires only 219 mV overpotential to achieve a current density of 10 mA cm⁻², and can stably catalyze OER in alkaline solutions. Compared to the Ni/NF and Fe/NF, the high OER activity of Ni-Fe/NF is not originated from improved number of active sites, but from the enhanced intrinsic activity, evidenced by the improved OER kinetics caused by the electron interaction. The acidity of the Ni site increases due to the introduction of Fe, and lattice oxygen mechanism is involved in the OER process on Ni-Fe/NF. After long-term OER, metal oxides and (oxy)hydroxides are formed at the surface.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137911"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-defect Pd-based catalyst doped with rare earth element La for ethanol-assisted energy-saving hydrogen production","authors":"Zekai Shen,&nbsp;Xuewen Wei,&nbsp;Mengxiao Wang,&nbsp;Xiaoying Zhang,&nbsp;Ranran Wei,&nbsp;Yinglong Wang,&nbsp;Shuai Wang,&nbsp;Shuli Yin","doi":"10.1016/j.jcis.2025.137969","DOIUrl":"10.1016/j.jcis.2025.137969","url":null,"abstract":"<div><div>Replacing the oxygen evolution reaction (OER) at the anode in water electrolysis with the more thermodynamically favourable ethanol oxidation reaction (EOR) offers an innovative approach to achieving efficient and energy-saving hydrogen production. Herein, we successfully synthesised PdLa bimetallene with a multi-defect crimped perforated structure using a one-step wet chemical method, achieving remarkable catalytic performance in both EOR and hydrogen evolution reaction (HER). The established two-electrode system of EOR &amp; HER realises a current density of 100 mA cm⁻² at 0.61 V, which is significantly lower by 0.95 V compared to that in case of electrochemical water splitting. Meanwhile, the introduction of the rare earth element (RE) La endows PdLa bimetallene with better catalytic performance compared to Pd metallene and Pd black. The effect of La addition on the catalytic performance is confirmed using density functional theory (DFT) calculations. This study provides a new method for ethanol-assisted energy-saving hydrogen production, and expands the application of REs in the hydrogen production process to a certain extent.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137969"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light-responsive cobalt-doped graphitic carbon nitride nanozyme for the colorimetric detection of acetylcholinesterase and its inhibitor","authors":"Tingting Hu ,&nbsp;Haodong Yang ,&nbsp;Wanqi Yang ,&nbsp;Pengjuan Ni ,&nbsp;Yizhong Lu","doi":"10.1016/j.jcis.2025.137968","DOIUrl":"10.1016/j.jcis.2025.137968","url":null,"abstract":"<div><div>The rational design of nanozymes with remarkable catalytic activity remains pivotal for advancing colorimetric biosensing platforms. Graphitic carbon nitride (g-C₃N₄) has emerged as a captivating photocatalytic material given its cost-effectiveness, ease of fabrication and outstanding stability. However, its practical implementation as a light-responsive nanozyme is fundamentally constrained by suboptimal catalytic activity. Herein, cobalt was incorporated into g-C₃N₄ nanosheets, giving rise to the formation of cobalt-doped graphitic carbon nitride nanosheets (Co/g-C₃N₄), which significantly enhanced its light-responsive oxidase-mimicking activity primarily attributed to its notably enhanced visible light absorption capacity and optimized photo-generated charge carrier separation/transfer efficiency. When exposed to visible light illumination, Co/g-C₃N₄ triggered the chromogenic reaction by facilitating the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) owing to the generation of hydrogen oxide, singlet oxygen and photogenerated holes. Furthermore, capitalizing on the inhibitory effect of thiocholine on the TMB oxidation, a new colorimetric method was established to determine acetylcholinesterase (AChE) activity. This colorimetric method enabled determination of AChE activity ranging from 0.1–15 mU/mL, achieving a remarkably low detection limit of 0.04 mU/mL. Moreover, it was effectively utilized to ascertain AChE activity in serum samples with desirable results. Additionally, it was successfully applied to detect AChE inhibitor. This work not only advances the modulation of catalytic activities in light-responsive nanozymes, but also presents an innovative perspective for AChE activity determination.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137968"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Engineering small extracellular vesicles with multivalent DNA probes for precise tumor targeting and enhanced synergistic therapy” [J. Colloid Interface Sci. 679(Part A) (2025) 335–348]","authors":"Qi Zhang,&nbsp;Ruo-Fei Ma,&nbsp;Ting-Ju Ren,&nbsp;Xiu-Yan Ren,&nbsp;Zhang-Run Xu","doi":"10.1016/j.jcis.2025.137902","DOIUrl":"10.1016/j.jcis.2025.137902","url":null,"abstract":"","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"695 ","pages":"Article 137902"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double-layer structure and interfacial tension at an ionic surfactant-laden interface","authors":"Emerson M. Uhlig,&nbsp;Aditya S. Khair","doi":"10.1016/j.jcis.2025.137924","DOIUrl":"10.1016/j.jcis.2025.137924","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Hypothesis&lt;/h3&gt;&lt;div&gt;The electrical double-layer structure at an ionic surfactant-laden interface is unique due to the nonlinear coupling of interfacial charging and adsorption kinetics. Consequently, the interfacial equation of state is nonideal even at low surfactant concentrations.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Analysis and computations&lt;/h3&gt;&lt;div&gt;We analyze the equilibrium double-layer structure and interfacial tension of a planar interface that has a surface charge density derived from adsorbed ionic surfactants, as opposed to a surface whose charge or potential is specified &lt;em&gt;a priori&lt;/em&gt;. Our analysis utilizes matched asymptotic expansions in the limit where the Debye length (&lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;κ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;) is much smaller than the surfactant depletion length (&lt;em&gt;h&lt;/em&gt;), i.e. &lt;span&gt;&lt;math&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;κ&lt;/mi&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;mo&gt;≪&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt;. The asymptotic analysis is verified against numerical computations.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Findings&lt;/h3&gt;&lt;div&gt;The interfacial concentration of surfactant is asymptotically small due to electrostatic repulsion, scaling as &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;Γ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, where &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;Γ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; is the maximum packing surface concentration. Moreover, the atypical double-layer structure consists of an inner layer of width &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;4&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; within a Debye layer of width &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;, outside of which is an electroneutral bulk solution of surfactant and counterions at uniform concentration &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;. The surfactant and counterion concentrations in the inner layer scale as &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; respectively, whereas both are &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∞&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; in the Debye layer. The interfacial tension is predicted to decrease from its clean value (i.e. in the absence of surfactant) as &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ε&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;. This asymptotic prediction is in qualitative agreement wit","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137924"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional polysulfone composite membranes via constructing electrically conductive gradient and magnetic-core/electric-shell dual-gradient microstructures: A strategy to tackle multiple hazards","authors":"Shuhao Qin ,&nbsp;Kang Li ,&nbsp;Ting Lei ,&nbsp;Yufei Liu ,&nbsp;Huiju Shao","doi":"10.1016/j.jcis.2025.137966","DOIUrl":"10.1016/j.jcis.2025.137966","url":null,"abstract":"<div><div>The rapid advancement of industries and technologies leads to the emergence of new pollutants such as dyeing wastewater and electromagnetic interference (EMI), and their efficient treatment poses great challenges for traditional materials and methods. Herein, a novel electrically conductive membrane (ECM) was fabricated on a large scale through the electric field-assisted membrane formation. Carbon nanotubes (CNTs) and carbon black (CB) were uniformly dispersed in dope solution by strong hydrogen bonding with suitable polyvinylpyrrolidone (PVP) molecules. They moved towards the coating layer upper surface under an electric field, forming electrically conductive gradient microstructures. Subsequently, a stable electrically conductive skin layer was generated due to the excellent film-forming ability of PVP, which hindered the loss of CNTs and CB into coagulating bath. The optimized membrane possessed a high electrical conductivity of 34.3 ± 0.7 S/m, and exhibited superior permeate fluxes (&gt;515.6 L/m² h·bar), dye rejections (&gt;87.1 %) and flux recovery ratios (&gt;91.5 %) in the electric-assisted filtration. Moreover, magnetic Fe₃O₄ nanoparticles were incorporated on the bottom surface and inside the pores by vacuum filtration, yielding an innovative magnetic-core/electric-shell dual-gradient microstructure. Electromagnetic wave went through an “absorption-multiple reflection/absorption-strong reflection-reabsorption/multiple reflection” process within the membrane, and then was consumed through the superposition of magnetic loss, polarization loss and conducting loss. Accordingly, the membrane displayed an EMI shielding efficiency of 23.6 ± 0.5 dB with a thickness of 0.2 mm at a low CB-CNTs loading of 20 wt%. This work provides a strategic framework for designing adaptable multifunctional membranes, bridging critical applications from wastewater remediation to next-generation electronic shielding technologies.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137966"},"PeriodicalIF":9.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}