Journal of Colloid and Interface Science最新文献

{"title":"Reducing the excition binding energy of covalent-organic frameworks via spatial-confined NiCo-NC as internal nanoreactors for photocatalytic hydrogen evolution","authors":"Ailing Pan ,&nbsp;Xiaohui Sun ,&nbsp;Yuanyuan Che ,&nbsp;Yu Wang ,&nbsp;Hong Du","doi":"10.1016/j.jcis.2025.137944","DOIUrl":"10.1016/j.jcis.2025.137944","url":null,"abstract":"<div><div>COFs (covalent-organic frameworks) are regarded as ideal photocatalyst for hydrogen-evolution, due to their structural controllability, but they possess poor electrical conductivity and high exciton binding energy, which limits their photocatalytic activity. Here, the NiCo-ZIF-67 derived NiCo-nitrogen-doped carbon (NiCo-NC) with superior conductivity and high light-absorption capacity was spatially confined in the channels of TP-BD COF (TP: 2, 4, 6-triformylphloroglucino; BD: 4, 4′-biphenylenediamin) by constructing hydrogen bonds to form NiCo-NC@TP-BD COF core@shell heterojunctions and NiCo-NC acts as internal highly active nanoreactor, which could accelerate the photocatalytic efficiency. Specifically, the optimal catalyst [email protected] (NT-0.6) exhibits the maximum H₂ evolution rate of 78.97mmol g⁻¹ h⁻¹ without Pt cocatalyst, which is approximately 395 times higher than that of bare TP-BD COF. Systematic investigations imply that the NiCo-NC as a high active nanoreactor was stably encapsulated in the pore of TP-BD by hydrogen bonds and formed a close interfacial contact, which is revealed by Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (¹H NMR). Meanwhile, the charge transfer and Hydrogen Evolution Reaction (HER) are revealed by the density functional theory (DFT) calculation. This work offers a promising strategy to reduce the high excitation binding energy of COFs-based catalysts in photocatalytic H₂ evolution.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137944"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115371","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":"Rational design of an Ag@MOF functional separator for controlled lithium deposition and enhanced interfacial stability in lithium metal batteries","authors":"Xiang Wang,&nbsp;Mengxi Bai,&nbsp;Qiufen Li,&nbsp;Dongze Li,&nbsp;Xiaoyan Lin,&nbsp;Siyuan Shao,&nbsp;Yanting Zhou,&nbsp;Donghui Cai,&nbsp;Yingxin Wu,&nbsp;Ziqi Wang","doi":"10.1016/j.jcis.2025.137946","DOIUrl":"10.1016/j.jcis.2025.137946","url":null,"abstract":"<div><div>The increasing demand for high-energy–density batteries has driven intensive research into lithium metal batteries (LMBs) as promising alternatives to conventional lithium-ion batteries. Despite their ultrahigh theoretical capacity, lithium metal anodes (LMAs) suffer from uncontrolled dendrite growth, leading to safety hazards and irreversible capacity loss. Herein, we develop a functional separator based on a composite of Ag nanoparticles (NPs) and metal–organic frameworks (MOFs) to enhance LMA stability. The –NH₂ groups in MOFs promote Li⁺ desolvation and transport, while Ag NPs induce the in-situ formation of a Li-Ag alloy interphase, effectively suppressing dendrite growth and improving interfacial lithiophilicity. As a result, the reversibility and Li plating/stripping kinetics of LMAs are significantly enhanced. The Li symmetric cells exhibit an ultralong lifespan of 2000 h at 0.2 mA cm⁻² and 1000 h at 0.5 mA cm⁻². Moreover, the Li||LiFePO₄ full cell retains 93.3 % of its initial capacity after 2000 cycles at 1C and maintains 45 mAh g⁻¹ even at an ultra-high rate of 15C.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137946"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115449","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":"Investigation of Cu-doped MnCeOx in PTFE catalytic fiber for synergistic removal of CB and NO at low temperature","authors":"Shengyong Lu ,&nbsp;Xuanhao Guo ,&nbsp;Manting Chen ,&nbsp;Guanjie Wang ,&nbsp;Juan Qiu ,&nbsp;Jiaming Ding ,&nbsp;Minghui Tang ,&nbsp;Zhengdong Han ,&nbsp;Yaqi Peng ,&nbsp;Jianhua Yan","doi":"10.1016/j.jcis.2025.137955","DOIUrl":"10.1016/j.jcis.2025.137955","url":null,"abstract":"<div><div>The synergistic removal of multiple pollutants from flue gas has attracted growing interest in recent years. In this study, Cu-doped MnCeO_x catalysts were synthesized via an impregnation method and integrated into PTFE fibers using a split-film process to enable the simultaneous removal of chlorobenzene (CB) and nitrogen oxide (NO). Among the catalysts tested, Mn₂Ce₁Cu_0.6O_x exhibited the highest performance, achieving 90 % CB degradation and 100 % NO conversion at 180 °C. The PTFE-based catalytic fibers also demonstrated excellent removal efficiency, reaching 83.7 % for dioxins at the same temperature. A possible reaction mechanism is proposed in which the NH₃-SCR process facilitates CB oxidation by generating reactive intermediates. Cu doping was found to enhance the density of acid sites and promote the ring-opening of CB, thereby suppressing chlorine accumulation and improving catalyst stability. These findings provide valuable insights for the development and optimization of catalytic bag filters for the efficient, synergistic removal of multiple pollutants from industrial emissions.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137955"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124007","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":"Interfacial crosslinking of hygroscopic hydrogel: A universal strategy for energy storage garment and its wearable applications","authors":"Zhiling Luo ,&nbsp;Hongyu Huang ,&nbsp;Zhipeng Wu ,&nbsp;Jiaqi Liu ,&nbsp;Xuhui Ye ,&nbsp;Huamin Chen ,&nbsp;Luzhuo Chen","doi":"10.1016/j.jcis.2025.137952","DOIUrl":"10.1016/j.jcis.2025.137952","url":null,"abstract":"<div><div>Energy storage textiles represent an innovative form of flexible energy storage devices, fully leveraging the wearing advantages of textiles and demonstrating unique benefits in wearable electronics. However, due to the inherent porous and insulating characteristics of textiles, textiles electrodes suffer from intricate preparation process and unsatisfying performance. Additionally, the electrolytes face challenges such as evaporation loss and leakage. To address these issues, this work presents an innovative strategy for fabricating energy storage garments based on the interfacial crosslinking of hydrogel electrolyte. Garments and electrodes were first assembled with polyvinyl alcohol (PVA) solution. The energy storage textiles are prepared by constructing textile/hydrogel/electrode interfaces during the freezing-thawing crosslinking process with enhanced strength. This strategy avoids the complex step of fabricating textile electrodes. Additionally, the hydrogel is hygroscopic and can replenish moisture from the air, enabling the long-term operation of devices without encapsulation. Importantly, this strategy is versatile and compatible with various textiles and available electrodes. A variety of supercapacitors (SCs) have been successfully integrated into commercial garments, including large-sized devices (5 × 5 cm², 11.8 F) for wearable applications. This innovative strategy is expected to provide new insights for the development of energy storage textiles.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137952"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123903","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 heterostructured CoS2@Co3O4 nanosheets synergistically enhance polysulfide adsorption and conversion in lithium-sulfur batteries","authors":"Zhidong Ye,&nbsp;Linfeng Gan,&nbsp;Yaxiong He,&nbsp;Qi Jiang","doi":"10.1016/j.jcis.2025.137943","DOIUrl":"10.1016/j.jcis.2025.137943","url":null,"abstract":"<div><div>The practical application of lithium-sulfur (Li-S) batteries faces numerous challenges, primarily due to the shuttle effect of soluble lithium polysulfides (LiPSs) and the sluggish electrochemical reaction kinetics during their conversion to Li₂S, resulting in poor cycling performance. To address these issues, this study employed a vapor deposition technique to in situ construct a CoS₂@Co₃O₄ heterostructure with superior interfacial properties on a Co₃O₄ substrate, followed by crosslinking and optimization with reduced graphene oxide (rGO). Density functional theory (DFT) calculations reveal for the first time that the incorporation of S effectively modulates the d-band center of Co, which not only enhances the chemical adsorption capability of the heterointerface toward lithium polysulfides but also optimizes the catalytic pathway for sulfur species conversion. Comprehensive experimental results and theoretical calculations confirm that the CoS₂@Co₃O₄ heterostructure exhibits multiple advantages, including strong adsorption capability, high catalytic activity, rapid Li⁺ transport efficiency, and excellent electrical conductivity. The CoS₂@Co₃O₄ heterostructure not only significantly suppresses the LiPSs shuttle effect but also greatly accelerates the electrochemical reaction kinetics of LiPSs and Li₂S. Compared to materials composed solely of CoS₂ or Co₃O₄, the CoS₂@Co₃O₄ heterostructure demonstrates synergistically enhanced electrochemical performance in Li-S batteries. At a current density of 2C, a representative Li-S battery achieves nearly 100 % Coulombic efficiency, with a reversible specific capacity of 827 mAh g⁻¹ retained after 1000 cycles, corresponding to a capacity decay rate of only 0.007 % per cycle. Even under high sulfur loading conditions (5.1 mg cm⁻²), the battery maintains stable cycling performance. This work provides novel insights and directions for designing multifunctional heterostructures with synergistic effects for applications in lithium-ion batteries and catalytic fields.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137943"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131344","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":"Strengthening built-in electric field and enriching active sites on cobalt-doped ZnSn(OH)6/ZnWO4 heterojunction to promote photocatalytic reduction of CO2","authors":"YiKai Wang ,&nbsp;Chenchen Xing ,&nbsp;Yujia Liu ,&nbsp;Ting Liang ,&nbsp;Yi Liu ,&nbsp;Xinqiu Tan ,&nbsp;Yan Huang ,&nbsp;Zebin Yu ,&nbsp;Zuofang Yao ,&nbsp;Yanping Hou","doi":"10.1016/j.jcis.2025.137950","DOIUrl":"10.1016/j.jcis.2025.137950","url":null,"abstract":"<div><div>The photocatalytic activity of photocatalysts is often limited by rapid recombination of photo-induced electron-hole pairs, insufficient active sites and slow reaction kinetics. In this study, the Co-doped ZnSn(OH)₆/ZnWO₄ heterojunctions with oxygen vacancies and Lewis basic sites were synthesized for efficient photocatalytic CO₂ reduction. The Co-doped ZnSn(OH)₆/ZnWO₄ exhibited superior photoelectrochemical properties to the ZnSn(OH)₆ and ZnWO₄. Results of kelvin probe force microscopy (KPFM) and electron density difference calculations demonstrated that Co doping induced lattice distortion in ZnSn(OH)₆, generating a local electric field, which, in synergy with oxygen vacancies in ZnWO₄, further enhanced the built-in electric field (IEF) within the Co-doped ZnSn(OH)₆/ZnWO₄ heterojunction, significantly accelerating carriers separation. Density functional theory (DFT) calculation also revealed that the Lewis basicity of ZnSn(OH)₆ and oxygen vacancies in ZnWO₄ enhanced CO₂ adsorption on the Co-doped ZnSn(OH)₆/ZnWO₄ heterojunction, facilitating CO₂ conversion. The Co-ZnSn(OH)₆/ZnWO₄-V_O composite exhibited the highest CO production rate (90.18 μmol·g⁻¹·h⁻¹) during CO₂ reduction, which was 25.47 and 1.28 times of those of ZnSn(OH)₆ and Co-ZnSn(OH)₆/ZnWO₄, respectively. The main reaction intermediates were identified and CO₂ reduction mechanism was proposed. This work provides reference to improve photocatalytic activity by enhancing IEF and increasing active sites in heterojunctions.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137950"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115446","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":"Ti3C2 quantum dots/hydroxypropyl methylcellulose modified Bi2WO6 for enhancing piezo-photocatalytic degradation of tetracycline","authors":"Ziyu Yao ,&nbsp;Luyang Zuo ,&nbsp;Huan Yang ,&nbsp;Bin Qin ,&nbsp;Xiaolong Li ,&nbsp;Jinzeng Wang ,&nbsp;Fang Wang","doi":"10.1016/j.jcis.2025.137939","DOIUrl":"10.1016/j.jcis.2025.137939","url":null,"abstract":"<div><div>A ternary composite of Ti₃C₂ quantum dots, hydroxypropyl methylcellulose, and Bi₂WO₆ effectively harnesses both optical and mechanical energy to achieve a strong piezo-phototronic effect for the removal of tetracycline hydrochloride. Under external mechanical stress, this system maintains a tightly integrated heterostructure, dynamically facilitating charge transfer across the nanosheets. Notably, the catalytic activity of the Ti₃C₂ quantum dots/hydroxypropyl methylcellulose/Bi₂WO₆ composite has been significantly enhanced, exhibiting a kinetic rate constant of 0.146 min⁻¹, which is 9.7 and 7.3 times higher than that of Bi₂WO₆ under pure photocatalytic and piezocatalytic conditions, respectively. The enhanced piezo-photocatalytic performance can be attributed to several synergistic factors: (i) Charge carriers move in the direction of external forces while holes move in the opposite direction, reducing the recombination efficiency of photoexcited electrons and holes; (ii) The good dispersibility and abundant hydroxyl groups of hydroxypropyl methylcellulose enable the even distribution of Ti₃C₂ quantum dots. Moreover, they form strong hydrogen bonds between Ti₃C₂ quantum dots and Bi₂WO₆, significantly promoting charge transfer and system stability; (iii) Ti₃C₂ quantum dots serve as electrons accepter of photogenerated carriers on the surface of Bi₂WO₆ nanoplates, accelerating the separation and migration of photoelectrons. This work demonstrates the successful construction of a stable organic–inorganic ternary catalytic system and elucidates its underlying mechanism, offering a promising strategy to boost the piezo-phototronic effect in advanced wastewater treatment applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137939"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115445","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":"Supercritical CO2-assisted synthesis of high-density Co clusters/N-doped porous carbon as bifunctional oxygen electrocatalyst for rechargeable Zn-air batteries","authors":"Shuai Gao ,&nbsp;Yuxi Song ,&nbsp;Huan Yang ,&nbsp;Ning Wang ,&nbsp;Juan Yang","doi":"10.1016/j.jcis.2025.137945","DOIUrl":"10.1016/j.jcis.2025.137945","url":null,"abstract":"<div><div>Rechargeable zinc-air batteries (ZABs) hold great promise for next-generation energy storage, but their practical application depends on the development of efficient bifunctional catalysts capable of catalyzing both the oxygen reduction reaction (ORR) during discharge and the oxygen evolution reaction (OER) during recharge. Herein, we propose a high-performance bifunctional oxygen electrocatalyst for ZABs, fabricated by encapsulating Co clusters into zeolite imidazole framework-8 (ZIF-8)-derived carbon via a supercritical CO₂ (scCO₂) fluid-assisted method. The dual-protection combining spatial confinement from porous carbon frameworks and strong Co-N coordination anchoring enables the stabilization of high-density Co clusters and preventing its aggregation. Furthermore, the scCO₂ treatment reconstructs the mesoporous structure, significantly improving mass transport and exposing more accessible active sites. Density functional theory (DFT) calculations demonstrate that the surface Co-N moieties serve as highly active centers for the ORR, whereas the metallic Co sites within the clusters predominantly drive the OER. As a result, Co@N–C exhibits a remarkably low potential gap (ΔE = 0.68 V) between ORR and OER. When applied in aqueous ZABs, the catalyst delivers an impressive specific capacity of 780 mAh g_Zn⁻¹ and a peak power density of 170 mW cm⁻², surpassing Pt/C + RuO₂. Moreover, the solid-state ZABs assembled with this catalyst achieve a high peak power density of 87.0 mW cm⁻² along with long-time cycling stability of 200 h, demonstrating great potential for flexible and portable energy storage devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137945"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124006","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":"Structure and interfacial properties of phospholipid-containing sponge nanoparticles and their interaction with myoglobin","authors":"Alessandra Luchini ,&nbsp;Marshall R. Machingauta ,&nbsp;Sebastian Köhler ,&nbsp;Jennifer Gilbert ,&nbsp;Ivan P. Yakimenko ,&nbsp;Jens Birch ,&nbsp;Kenneth Järrendahl ,&nbsp;Joshaniel F.K. Cooper ,&nbsp;Sjoerd Stendahl ,&nbsp;Sean Langridge ,&nbsp;Christy Kinane ,&nbsp;Andrew J. Caruana ,&nbsp;Olga Dikaia ,&nbsp;Aleksandr Goikhman ,&nbsp;Alexey Vorobiev ,&nbsp;Anton Devishvili ,&nbsp;Björgvin Hjörvarsson ,&nbsp;Tommy Nylander","doi":"10.1016/j.jcis.2025.137879","DOIUrl":"10.1016/j.jcis.2025.137879","url":null,"abstract":"<div><h3>Hypothesis</h3><div>Sponge phase (L₃) lipid nanoparticles (L₃-NPs) have been shown to have large potential for the encapsulation of biomolecules, such as enzymes, with applications in food and pharmaceutical science. In this study, we introduce new formulations of L₃-NPs including the phospholipids dioleoylphosphatidylcholine (DOPC) and dioleoyltrimethylammonium propane (DOTAP). The interaction of these new L₃-NPs with myoglobin is of interest for the development of iron supplements which can be incorporated during food processing.</div></div><div><h3>Experiments</h3><div>We characterized the sample structure by small-angle X-ray scattering (SAXS) measurements with and without the addition of myoglobin. We also tested the myoglobin-lipid interaction in an experimental setup that mimicked the interface between the bilayer and water channels within the bicontinuous sponge structure. This included spreading the L₃-NPs onto a hydrophilic surface to form supported lipid bilayers and characterizing their interaction with myoglobin by means of quartz crystal microbalance with dissipation monitoring and polarized neutron reflectometry.</div></div><div><h3>Findings</h3><div>SAXS data indicate that the new formulations containing DOPC and DOTAP formed a sponge phase in the bulk. The data from the surface techniques showed that deposited bilayers containing DOPC were largely unaffected by the addition of myoglobin, whereas those without DOPC were destabilized and partially removed.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137879"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134325","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":"Excellent absorption-dominant electromagnetic interference shielding performances of asymmetric gradient layered composite films exploited with assistance of machine learning","authors":"Lingjun Zeng ,&nbsp;Yu Zhang ,&nbsp;Xiaoping Mai ,&nbsp;Peng Ai ,&nbsp;Lan Xie ,&nbsp;Bai Xue ,&nbsp;Qiang Zheng","doi":"10.1016/j.jcis.2025.137927","DOIUrl":"10.1016/j.jcis.2025.137927","url":null,"abstract":"<div><div>Developing high-performance absorption-dominant electromagnetic interference (EMI) shielding composites is essential yet challenging for advanced high-power electronic devices to minimize the second EMI radiation. Traditional experiment-based approaches for shielding material exploitation usually require extensive fabrication and characterization procedures, leading to a long duration and high expense. Herein, machine learning was applied to assist in developing calcium alginate/sodium montmorillonite/CNT@FeCo/CNT (CA/MMT/CNT@FeCo/CNT, CMF/CMFC-x wt%/CMC-y wt%) EMI shielding composites with the asymmetrical gradient layered architecture, triggering the optimization of absorption-dominant EMI shielding properties and reducing experimental costs. The fabricated CMF/CMFC-48.4 wt%/CMC-43.9 wt% film with a small thickness (341.4 μm) exhibits the superior averaged total EMI shielding effectiveness (EMI SE_T) of 38.9 dB and optimal absorption coefficient (A) of 0.61, when electromagnetic waves (EMWs) are incident from CMF layer. Based on experimental data, the reflection shielding effectiveness (SE_R), absorption shielding effectiveness (SE_A), reflection coefficient (R), and A are utilized to train and test four different machine learning models. Polynomial Linear model (PL) possesses the best prediction accuracy and reliability with the root mean square error (RMSE) of SE_R and SE_A lower than 0.7022, and RMSE of R and A below 0.0361, suggesting that machine learning can effectively alleviate the experimental burden. Moreover, the composite film also features the acceptable mechanical properties and prominent fire resistance, which is vital for the practical application. This work provides a new idea for reducing experimental costs and accelerating the discovery of advanced absorption-dominant EMI shielding materials.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137927"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115373","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}