Pub Date : 2026-05-20Epub Date: 2026-02-05DOI: 10.1016/j.colsurfa.2026.139861
Xiaoying Feng , Juan Miao , Xuefeng Wei , Xinquan Zhou , Ning Zhang , Hang Xu , Shuge Peng
Electrocatalytic dechlorination (EDC) offers an efficient and environmentally friendly approach to removing chlorinated pollutants, but its selectivity is frequently undermined by the competing hydrogen evolution reaction (HER). To overcome this limitation, this study fabricated an innovative Ag-NiOx-NC/CF cathode, integrating a NiOx and nitrogen-doped carbon co-modified Ag composite onto a carbon felt substrate. The composite cathode demonstrates good EDC activity for 2,4-dichlorophenol (2,4-DCP), achieving a 95.8 % removal efficiency on the Ag-NiOx-NC/CF electrode within 180 min under neutral conditions, with an apparent rate constant (kobs) of 0.0168 min−1, comparable to commercial Pd electrodes. This enhanced performance is attributed to its abundant oxygen vacancies and the synergistic interactions among NiOx, nitrogen-doped carbon, and Ag. The EDC of 2,4-DCP involves both H*-mediated electrocatalytic hydrogenation (ECH) and direct electron transfer (DET). This work provides a cost-effective strategy for developing noble metal-free EDC systems, advancing practical remediation of chlorinated pollutants.
{"title":"Nitrogen-doped carbon and NiOx synergistically powered electrocatalytic dechlorination on Ag composite cathode","authors":"Xiaoying Feng , Juan Miao , Xuefeng Wei , Xinquan Zhou , Ning Zhang , Hang Xu , Shuge Peng","doi":"10.1016/j.colsurfa.2026.139861","DOIUrl":"10.1016/j.colsurfa.2026.139861","url":null,"abstract":"<div><div>Electrocatalytic dechlorination (EDC) offers an efficient and environmentally friendly approach to removing chlorinated pollutants, but its selectivity is frequently undermined by the competing hydrogen evolution reaction (HER). To overcome this limitation, this study fabricated an innovative Ag-NiO<sub>x</sub>-NC/CF cathode, integrating a NiO<sub>x</sub> and nitrogen-doped carbon co-modified Ag composite onto a carbon felt substrate. The composite cathode demonstrates good EDC activity for 2,4-dichlorophenol (2,4-DCP), achieving a 95.8 % removal efficiency on the Ag-NiO<sub>x</sub>-NC/CF electrode within 180 min under neutral conditions, with an apparent rate constant (<em>k</em><sub>obs</sub>) of 0.0168 min<sup>−1</sup>, comparable to commercial Pd electrodes. This enhanced performance is attributed to its abundant oxygen vacancies and the synergistic interactions among NiO<sub>x</sub>, nitrogen-doped carbon, and Ag. The EDC of 2,4-DCP involves both H*-mediated electrocatalytic hydrogenation (ECH) and direct electron transfer (DET). This work provides a cost-effective strategy for developing noble metal-free EDC systems, advancing practical remediation of chlorinated pollutants.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139861"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185676","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}
Pub Date : 2026-05-20Epub Date: 2026-01-31DOI: 10.1016/j.colsurfa.2026.139802
Zhongxuan Liu , Kangkang Wang , Zhixian He , Wukui Yang , Haijiao Xie , Sheying Dong
Developing eco-friendly, high performance corrosion inhibitors is imperative for mitigating the economic and safety risks of carbon steel corrosion in acidic media. A hybrid carbon dot inhibitor (CD1-CD2) was prepared by hydrothermal carbonization of hexamethylenetetramine and itaconic acid, in which amide coupling promotes adsorption. In 1.0 M HCl, CD1-CD2 achieves 90.5 % inhibition at 200 mg·L−1. Polarization and electrochemical impedance spectroscopy indicate a mixed type interfacial mechanism, which is dominated by anodic suppression. Compared with hexamethylenetetramine carbon dots (CD1), the Nyquist semicircle diameter of CD1-CD2 increased by 71 %, and compared with itaconic acid carbon dots (CD2), it increased by 140 %, which is consistent with its higher interfacial charge-transfer resistance and improved inhibition efficiency. In 3.5 wt% NaCl solution, CD1-CD2 at 200 mg·L−1 achieves 52.7 % inhibition for Q235 carbon steel. SEM shows that severe pitting in the blank is replaced by a smooth, continuous surface. Weight loss measurements together with the Langmuir fit indicate spontaneous adsorption. UV–vis spectra, photoluminescence, and density functional theory indicate that nitrogen rich motifs facilitate coordination to surface Fe and film formation, yielding a compact interfacial layer that blocks active sites and limits chloride transport. Together, these results establish interfacial adsorption and film formation as the key drivers of inhibition and point to a practical route for deploying hybrid carbon dots in acidic and saline media.
{"title":"Unraveling the enhanced corrosion inhibition mechanism of hybrid carbon dots: Interfacial analysis and performance evaluation","authors":"Zhongxuan Liu , Kangkang Wang , Zhixian He , Wukui Yang , Haijiao Xie , Sheying Dong","doi":"10.1016/j.colsurfa.2026.139802","DOIUrl":"10.1016/j.colsurfa.2026.139802","url":null,"abstract":"<div><div>Developing eco-friendly, high performance corrosion inhibitors is imperative for mitigating the economic and safety risks of carbon steel corrosion in acidic media. A hybrid carbon dot inhibitor (CD<sub>1</sub>-CD<sub>2</sub>) was prepared by hydrothermal carbonization of hexamethylenetetramine and itaconic acid, in which amide coupling promotes adsorption. In 1.0 M HCl, CD<sub>1</sub>-CD<sub>2</sub> achieves 90.5 % inhibition at 200 mg·L<sup>−1</sup>. Polarization and electrochemical impedance spectroscopy indicate a mixed type interfacial mechanism, which is dominated by anodic suppression. Compared with hexamethylenetetramine carbon dots (CD<sub>1</sub>), the Nyquist semicircle diameter of CD<sub>1</sub>-CD<sub>2</sub> increased by 71 %, and compared with itaconic acid carbon dots (CD<sub>2</sub>), it increased by 140 %, which is consistent with its higher interfacial charge-transfer resistance and improved inhibition efficiency. In 3.5 wt% NaCl solution, CD<sub>1</sub>-CD<sub>2</sub> at 200 mg·L<sup>−1</sup> achieves 52.7 % inhibition for Q235 carbon steel. SEM shows that severe pitting in the blank is replaced by a smooth, continuous surface. Weight loss measurements together with the Langmuir fit indicate spontaneous adsorption. UV–vis spectra, photoluminescence, and density functional theory indicate that nitrogen rich motifs facilitate coordination to surface Fe and film formation, yielding a compact interfacial layer that blocks active sites and limits chloride transport. Together, these results establish interfacial adsorption and film formation as the key drivers of inhibition and point to a practical route for deploying hybrid carbon dots in acidic and saline media.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139802"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170975","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}
Nickel vanadium oxide (Ni3V2O8) is an emerging redox-active transition metal oxide with high pseudocapacitive potential but limited by poor intrinsic conductivity and structural degradation during cycling. In this study, a Ni3V2O8–reduced graphene oxide (rGO) nanocomposite was strategically engineered via a facile hydrothermal route to overcome these limitations. The synergistic integration of Ni3V2O8 nanoparticles with interlaced rGO nanosheets enhanced electronic transport, structural stability, and electrolyte accessibility. Structural analyses confirmed the orthorhombic Ni3V2O8 phase and strong interfacial coupling with rGO, while XPS verified the coexistence of Ni2+/Ni3+ and V4+/V5+ redox couples. Among the composites, the optimized Ni3V2O8@rGO (4 mg rGO) exhibited a specific capacitance of 509 F/g at 3 mA/cm2 in a three-electrode system. The assembled asymmetric supercapacitor (Ni3V2O8@rGO//AC) delivered 16.47 F/g capacitance, 7.41 Wh/kg energy density, and 523 W/ kg power density, maintaining 89 % coulombic efficiency after 10,000 cycles. These findings highlight the effective role of rGO in boosting electron mobility and mitigating volume expansion, positioning Ni3V2O8@rGO as a highly stable, high-performance electrode for next-generation hybrid supercapacitors.
{"title":"Strategic fabrication of nickel vanadium oxide-reduced graphene oxide nanohybrid: A pathway to hybrid supercapacitor","authors":"R.B. Kharade , R.A. Kadam , M.A. Yewale , S.S. Pujari , S.A. Alshehri , D.H. Bobade , S.D. Dhas , S.B. Madake , Minjae Kim , D.K Shin","doi":"10.1016/j.colsurfa.2026.139685","DOIUrl":"10.1016/j.colsurfa.2026.139685","url":null,"abstract":"<div><div>Nickel vanadium oxide (Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub>) is an emerging redox-active transition metal oxide with high pseudocapacitive potential but limited by poor intrinsic conductivity and structural degradation during cycling. In this study, a Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub>–reduced graphene oxide (rGO) nanocomposite was strategically engineered via a facile hydrothermal route to overcome these limitations. The synergistic integration of Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub> nanoparticles with interlaced rGO nanosheets enhanced electronic transport, structural stability, and electrolyte accessibility. Structural analyses confirmed the orthorhombic Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub> phase and strong interfacial coupling with rGO, while XPS verified the coexistence of Ni<sup>2+</sup>/Ni<sup>3+</sup> and V<sup>4+</sup>/V<sup>5+</sup> redox couples. Among the composites, the optimized Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub>@rGO (4 mg rGO) exhibited a specific capacitance of 509 F/g at 3 mA/cm<sup>2</sup> in a three-electrode system. The assembled asymmetric supercapacitor (Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub>@rGO//AC) delivered 16.47 F/g capacitance, 7.41 Wh/kg energy density, and 523 W/ kg power density, maintaining 89 % coulombic efficiency after 10,000 cycles. These findings highlight the effective role of rGO in boosting electron mobility and mitigating volume expansion, positioning Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub>@rGO as a highly stable, high-performance electrode for next-generation hybrid supercapacitors.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139685"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045211","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}
Pub Date : 2026-05-20Epub Date: 2026-01-24DOI: 10.1016/j.colsurfa.2026.139704
Aml E. Shrshr , Mohammed A. Al-Tahan , Meili Wang , Yutao Dong , Jiyu Wang , Chunjing Wang , Jianmin Zhang
Although lithium-sulfur (Li-S) batteries possess a theoretically high energy density, they face substantial limitations that hinder their commercialization and practical utilization. Two limitations are the slow kinetics of sulfur reactions and the lithium polysulfide (LiPSs) shuttle phenomenon. This research has advanced Li-S batteries by synthesizing and introducing a Fe-doped MoS2 and WO3 intercalated multilayer rGO composite (Fe-MoS2-WO3@rGO) as an electrocatalyst. WO₃ attaches to polysulfides, stopping dissolution into the electrolyte, while the MoS₂ promotes electron transport and strong binding at the separator. Doping the iron (Fe) element may expose additional anchoring active sites, which reduce the shuttle effect. Thus, the Fe-MoS2-WO3@rGO could balance polysulfide immobilization and catalytic activity, leading to high performance of the cell. The Li-S cell using a separator consisting of Fe-MoS2-WO3@rGO/PP delivers a significant capacity of 442 mAh g−1 after the 1000th cycle at 1.0 C. Moreover, under a substantial current of 5.0 C, the cell consistently retains a 415 mAh g−1 capacity for 700 cycles. Furthermore, the tri-layer sulfur cathode cell provides a capacity of 6.1 mAh cm−2 after completing the 100th cycle (under the condition of 8.19 mg cm−2 sulfur loading). The findings of this study demonstrate the successful construction and utilization of the Fe-MoS2-WO3@rGO functional mediator in Li-S cells, resulting in enhanced electrochemical performance. Besides, it facilitates the development of an innovative multi-layer cathode technology to boost the efficiency of Li-S cells.
虽然锂硫（Li-S）电池理论上具有高能量密度，但它们面临着阻碍其商业化和实际应用的实质性限制。两个限制是硫反应的缓慢动力学和锂多硫化物（LiPSs）穿梭现象。本研究通过合成并引入掺铁的MoS2和WO3插层多层氧化石墨烯复合材料（Fe-MoS2-WO3@rGO）作为电催化剂，推进了锂硫电池的发展。WO₃附着在多硫化物上，阻止其溶解到电解质中，而MoS₂促进电子传递和在分离器处的强结合。掺杂铁（Fe）元素可以暴露额外的锚定活性位点，从而减少穿梭效应。因此，Fe-MoS2-WO3@rGO可以平衡多硫化物的固定化和催化活性，从而实现电池的高性能。使用Fe-MoS2-WO3@rGO/PP组成的隔膜的Li-S电池在1.0 C下进行第1000次循环后可提供442 mAh g−1的显著容量。此外，在5.0 C的大电流下，电池在700次循环中始终保持415 mAh g - 1容量。此外，三层硫阴极电池在完成第100次循环后（在8.19 mg cm−2的硫负载条件下）提供了6.1 mAh cm−2的容量。本研究结果证明了Fe-MoS2-WO3@rGO功能介质在锂硫电池中的成功构建和利用，从而提高了锂硫电池的电化学性能。此外，它促进了创新的多层阴极技术的发展，以提高锂- s电池的效率。
{"title":"Enhancing the redox kinetics of Li-S cells with Fe-doped MoS2 and WO3 intercalated multilayer reduced graphene oxide as a multifunctional mediator","authors":"Aml E. Shrshr , Mohammed A. Al-Tahan , Meili Wang , Yutao Dong , Jiyu Wang , Chunjing Wang , Jianmin Zhang","doi":"10.1016/j.colsurfa.2026.139704","DOIUrl":"10.1016/j.colsurfa.2026.139704","url":null,"abstract":"<div><div>Although lithium-sulfur (Li-S) batteries possess a theoretically high energy density, they face substantial limitations that hinder their commercialization and practical utilization. Two limitations are the slow kinetics of sulfur reactions and the lithium polysulfide (LiPSs) shuttle phenomenon. This research has advanced Li-S batteries by synthesizing and introducing a Fe-doped MoS<sub>2</sub> and WO<sub>3</sub> intercalated multilayer rGO composite (Fe-MoS<sub>2</sub>-WO<sub>3</sub>@rGO) as an electrocatalyst. WO₃ attaches to polysulfides, stopping dissolution into the electrolyte, while the MoS₂ promotes electron transport and strong binding at the separator. Doping the iron (Fe) element may expose additional anchoring active sites, which reduce the shuttle effect. Thus, the Fe-MoS<sub>2</sub>-WO<sub>3</sub>@rGO could balance polysulfide immobilization and catalytic activity, leading to high performance of the cell. The Li-S cell using a separator consisting of Fe-MoS<sub>2</sub>-WO<sub>3</sub>@rGO/PP delivers a significant capacity of 442 mAh g<sup>−1</sup> after the 1000th cycle at 1.0 C. Moreover, under a substantial current of 5.0 C, the cell consistently retains a 415 mAh g<sup>−1</sup> capacity for 700 cycles. Furthermore, the tri-layer sulfur cathode cell provides a capacity of 6.1 mAh cm<sup>−2</sup> after completing the 100th cycle (under the condition of 8.19 mg cm<sup>−2</sup> sulfur loading). The findings of this study demonstrate the successful construction and utilization of the Fe-MoS<sub>2</sub>-WO<sub>3</sub>@rGO functional mediator in Li-S cells, resulting in enhanced electrochemical performance. Besides, it facilitates the development of an innovative multi-layer cathode technology to boost the efficiency of Li-S cells.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139704"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045213","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}
The growing demand for advanced electromagnetic shielding materials has stimulated the development of the more efficient polymer/metal–organic framework (MOF) composite films for improved microwave absorption. In this study, flexible poly(vinyl chloride) (PVC) films were incorporated with iron-based MOF and magnetic graphene quantum dots (MGQDs) to provide better microwave attenuation. The characterization studies (SEM, FTIR, and XRD) validate homogeneous large-scale dispersion of hybrid fillers, with strong interfacial interactions enhancing characteristics within polymer networks. The mechanical study as well as TGA provide quantitative evidence of improved stiffness and tensile strength, as well as improved thermal stability. The VSM measurements indicate strong magnetic responsiveness, and that this, in conjunction with optimized interfacial design, significantly contributed to an increase in microwave absorption. The optimized composite film (thickness 2.5 mm) produced a minimal reflection loss of −33 dB and effective absorption bandwidth of roughly 7.5 GHz, which spans the X and Ku-bands. These results highlight the critical role of nanocomposite dispersion and interfacial control in enhancing the structural, thermal, mechanical, and electromagnetic properties of polymer/MOF composites, providing a promising strategy for designing advanced materials for microwave management in biomedical, environmental, and related applications.
{"title":"Synthesis of polymer composite films reinforced with MOFs/magnetic graphene quantum dots for microwave absorption","authors":"Hossein Poursadegh , Majid Askari Sayar , Saeid Nickabadi , Behrang Golmohammadi , Hossein Rostami","doi":"10.1016/j.colsurfa.2026.139600","DOIUrl":"10.1016/j.colsurfa.2026.139600","url":null,"abstract":"<div><div>The growing demand for advanced electromagnetic shielding materials has stimulated the development of the more efficient polymer/metal–organic framework (MOF) composite films for improved microwave absorption. In this study, flexible poly(vinyl chloride) (PVC) films were incorporated with iron-based MOF and magnetic graphene quantum dots (MGQDs) to provide better microwave attenuation. The characterization studies (SEM, FTIR, and XRD) validate homogeneous large-scale dispersion of hybrid fillers, with strong interfacial interactions enhancing characteristics within polymer networks. The mechanical study as well as TGA provide quantitative evidence of improved stiffness and tensile strength, as well as improved thermal stability. The VSM measurements indicate strong magnetic responsiveness, and that this, in conjunction with optimized interfacial design, significantly contributed to an increase in microwave absorption. The optimized composite film (thickness 2.5 mm) produced a minimal reflection loss of −33 dB and effective absorption bandwidth of roughly 7.5 GHz, which spans the X and Ku-bands. These results highlight the critical role of nanocomposite dispersion and interfacial control in enhancing the structural, thermal, mechanical, and electromagnetic properties of polymer/MOF composites, providing a promising strategy for designing advanced materials for microwave management in biomedical, environmental, and related applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139600"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076426","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}
Pub Date : 2026-05-20Epub Date: 2026-01-26DOI: 10.1016/j.colsurfa.2026.139709
Chao Chen, Lei Xia, Wenjun Pan, Sheng Pu, Dongpeng Wang, Yuxin Wang
Oxidase-like enzymes have been considered as the promising antibacterial agent for toxicity of H2O2 can be absolutely avoid. Development of mixed metal oxides-based nanozymes has been considered as an essential method for enhancing the antibacterial activity. Bioinspired by the efficient catalytic action of natural oxidases, novel ternary mixed metal oxides (MMOs) microspheres were designed through modulating the ratio of Co, Mn, Cu as oxidase-like catalytic platform for achieving a biomimetic antibacterial activity. In this work, a composite system leveraging oxidase-like enzymes of Co3O4 and Mn3O4 were designed to achieve efficient catalytic function through substrate capture and generating reactive oxygen radicals (ROS) by tailoring the composition and structure. Additionally, antibacterial components such as CuO nanoparticles and Co3O4 were incorporated to enhance antimicrobial efficacy. Interestingly, by controlling of CoMnCu components ratio at 2:1:1, the achieved ternary Co2MnCu MMOs microsphere exhibits an inhibition rate more than 99.15 % against Escherichia coli. The excellent sterilization ability is primarily attributed to the strong substrate affinity (Km=0.0715 mM) of the oxidase-mimicking and the optimal content (2.7 %) of CuO for the Co2MnCu microsphere composed of nanoneedles. This research shed light on a novel designing strategy for environmentally friendly antibacterial materials and contributes to the advancement of sustainable materials.
{"title":"Bioinspired antibacterial microspheres: Integrating Co3O4/Mn3O4 nanozyme catalysis and CuO nanoparticles in a single platform","authors":"Chao Chen, Lei Xia, Wenjun Pan, Sheng Pu, Dongpeng Wang, Yuxin Wang","doi":"10.1016/j.colsurfa.2026.139709","DOIUrl":"10.1016/j.colsurfa.2026.139709","url":null,"abstract":"<div><div>Oxidase-like enzymes have been considered as the promising antibacterial agent for toxicity of H<sub>2</sub>O<sub>2</sub> can be absolutely avoid. Development of mixed metal oxides-based nanozymes has been considered as an essential method for enhancing the antibacterial activity. Bioinspired by the efficient catalytic action of natural oxidases, novel ternary mixed metal oxides (MMOs) microspheres were designed through modulating the ratio of Co, Mn, Cu as oxidase-like catalytic platform for achieving a biomimetic antibacterial activity. In this work, a composite system leveraging oxidase-like enzymes of Co<sub>3</sub>O<sub>4</sub> and Mn<sub>3</sub>O<sub>4</sub> were designed to achieve efficient catalytic function through substrate capture and generating reactive oxygen radicals (ROS) by tailoring the composition and structure. Additionally, antibacterial components such as CuO nanoparticles and Co<sub>3</sub>O<sub>4</sub> were incorporated to enhance antimicrobial efficacy. Interestingly, by controlling of CoMnCu components ratio at 2:1:1, the achieved ternary Co<sub>2</sub>MnCu MMOs microsphere exhibits an inhibition rate more than 99.15 % against <em>Escherichia coli</em>. The excellent sterilization ability is primarily attributed to the strong substrate affinity (<em>K</em><sub>m</sub>=0.0715 mM) of the oxidase-mimicking and the optimal content (2.7 %) of CuO for the Co<sub>2</sub>MnCu microsphere composed of nanoneedles. This research shed light on a novel designing strategy for environmentally friendly antibacterial materials and contributes to the advancement of sustainable materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139709"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076537","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}
Pub Date : 2026-05-20Epub Date: 2026-01-22DOI: 10.1016/j.colsurfa.2026.139689
Mengying Li , Xinglong Song , Na Cheng , Tong Lu , Yilun Hu , Xu Wang , Kai Weng , Baoji Hu , Yalan Yang
A coaxial composite nanofiber triboelectric nanogenerator (TENG) was fabricated using electrospinning technology, featuring a polyacrylonitrile (PAN)/thermoplastic polyurethane (TPU) tribopositive layer (TP) and a polyvinylidene fluoride (PVDF)/polystyrene (PS) tribonegative layer (TN). The diversified interface design enhances energy conversion efficiency and environmental adaptability. Under vertical contact separation mode, the device achieves an open-circuit voltage (VOC) of 198.2 V and a short-circuit current (ISC) of 0.83 μA, outperforming most conventional fiber-based TENGs. It can stably power low-power wearable devices such as LED arrays and digital clocks. Mechanical testing demonstrates the spun nanofiber membrane’s exceptional flexibility and structural integrity: the optimized 10PAN/15TPU fiber membrane exhibits a tensile strength of 6.5 MPa and elongation at break of 79 %, while the 10PVDF/22PS fiber membrane achieves a tensile strength of 0.43 MPa and ductility of 3.7 %, both meeting the mechanical requirements for wearable applications. Characterization via scanning electron microscope (SEM), Fourier transform infrared (FTIR), and XRD confirmed excellent interfacial compatibility, uniform fiber morphology, and tunable crystallinity, which enhance charge retention and reduce leakage. COMSOL Multiphysics simulations revealed an inverse relationship between electrode spacing and output potential, providing theoretical guidance for geometric optimization. This study demonstrates that coaxial PAN/TPU and PVDF/PS nanofibers are viable materials for high-performance flexible TENGs, offering a practical solution for self-powered wearable smart systems integrating mechanical and electrical functionality.
{"title":"Coaxial electrospinning of PAN/TPU and PVDF/PS nanofibers for triboelectric nanogenerators: Fabrication, characterization, and output performance","authors":"Mengying Li , Xinglong Song , Na Cheng , Tong Lu , Yilun Hu , Xu Wang , Kai Weng , Baoji Hu , Yalan Yang","doi":"10.1016/j.colsurfa.2026.139689","DOIUrl":"10.1016/j.colsurfa.2026.139689","url":null,"abstract":"<div><div>A coaxial composite nanofiber triboelectric nanogenerator (TENG) was fabricated using electrospinning technology, featuring a polyacrylonitrile (PAN)/thermoplastic polyurethane (TPU) tribopositive layer (TP) and a polyvinylidene fluoride (PVDF)/polystyrene (PS) tribonegative layer (TN). The diversified interface design enhances energy conversion efficiency and environmental adaptability. Under vertical contact separation mode, the device achieves an open-circuit voltage (VOC) of 198.2 V and a short-circuit current (ISC) of 0.83 μA, outperforming most conventional fiber-based TENGs. It can stably power low-power wearable devices such as LED arrays and digital clocks. Mechanical testing demonstrates the spun nanofiber membrane’s exceptional flexibility and structural integrity: the optimized 10PAN/15TPU fiber membrane exhibits a tensile strength of 6.5 MPa and elongation at break of 79 %, while the 10PVDF/22PS fiber membrane achieves a tensile strength of 0.43 MPa and ductility of 3.7 %, both meeting the mechanical requirements for wearable applications. Characterization via scanning electron microscope (SEM), Fourier transform infrared (FTIR), and XRD confirmed excellent interfacial compatibility, uniform fiber morphology, and tunable crystallinity, which enhance charge retention and reduce leakage. COMSOL Multiphysics simulations revealed an inverse relationship between electrode spacing and output potential, providing theoretical guidance for geometric optimization. This study demonstrates that coaxial PAN/TPU and PVDF/PS nanofibers are viable materials for high-performance flexible TENGs, offering a practical solution for self-powered wearable smart systems integrating mechanical and electrical functionality.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139689"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076486","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}
Pub Date : 2026-05-20Epub Date: 2026-01-28DOI: 10.1016/j.colsurfa.2026.139748
Lifei Zhang , Mei Yan , Ke Wang , Xinchun Lu
Cobalt (Co) with its low resistivity, superior adhesion property, and void-free seamless fill ability pledges to transform the landscape of integrated circuits in many areas, especially in interconnects and logic contacts. The cleaning of Co surfaces after chemical mechanical polishing (CMP) is an indispensable step, as the process can introduce defects such as SiO2 nanoparticles, organic residues, and severe corrosion. Based on preliminary investigations, this study proposes a composite system utilizing a cationic surfactant combined with a nonionic surfactant. Specifically designed for post-CMP cleaning of Co patterned wafers, the system addresses the issues of low particle removal efficiency (PRE) associated with single surfactant approaches. The cleaning performance of this system was validated for the first time on actual Co patterned wafers (94.58 % PRE), which is significantly superior to that of individual surfactant systems. Contact angle measurements demonstrate that the introduction of composite surfactants enhances the wettability of the cleaning solution, mitigating the hydrophobicity of the Co surface induced by corrosion inhibitors. Furthermore, zeta potential measurements and analysis of electrostatic interactions indicate that under the influence of the complex surfactant, stronger repulsion occurs between silica particles and the Co surface, facilitating effective particle cleaning. Quantum chemical calculations further elucidate the efficacy of surfactants, with hydrophilic groups serving as primary adsorption sites. This study addresses the current gap in cleaning research, which has been largely confined to blanket wafers, and provides valuable insights for practical Co post‑CMP cleaning solutions.
{"title":"Particle removal behavior of composite surfactants during the post-CMP cleaning process for Co-patterned wafers","authors":"Lifei Zhang , Mei Yan , Ke Wang , Xinchun Lu","doi":"10.1016/j.colsurfa.2026.139748","DOIUrl":"10.1016/j.colsurfa.2026.139748","url":null,"abstract":"<div><div>Cobalt (Co) with its low resistivity, superior adhesion property, and void-free seamless fill ability pledges to transform the landscape of integrated circuits in many areas, especially in interconnects and logic contacts. The cleaning of Co surfaces after chemical mechanical polishing (CMP) is an indispensable step, as the process can introduce defects such as SiO<sub>2</sub> nanoparticles, organic residues, and severe corrosion. Based on preliminary investigations, this study proposes a composite system utilizing a cationic surfactant combined with a nonionic surfactant. Specifically designed for post-CMP cleaning of Co patterned wafers, the system addresses the issues of low particle removal efficiency (PRE) associated with single surfactant approaches. The cleaning performance of this system was validated for the first time on actual Co patterned wafers (94.58 % PRE), which is significantly superior to that of individual surfactant systems. Contact angle measurements demonstrate that the introduction of composite surfactants enhances the wettability of the cleaning solution, mitigating the hydrophobicity of the Co surface induced by corrosion inhibitors. Furthermore, zeta potential measurements and analysis of electrostatic interactions indicate that under the influence of the complex surfactant, stronger repulsion occurs between silica particles and the Co surface, facilitating effective particle cleaning. Quantum chemical calculations further elucidate the efficacy of surfactants, with hydrophilic groups serving as primary adsorption sites. This study addresses the current gap in cleaning research, which has been largely confined to blanket wafers, and provides valuable insights for practical Co post‑CMP cleaning solutions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139748"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076501","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}
Pub Date : 2026-05-20Epub Date: 2026-01-26DOI: 10.1016/j.colsurfa.2026.139720
Ziqing Liu , Long Xu , Mingyuan Xin , Tianning Fei , Guodong Yang , Houjian Gong , Mei-Chun Li , Hai Sun , Mingzhe Dong
Hydraulic fracturing promotes widespread oil-water two-phase flow within shale nanopores. Real shale oil exhibits a high degree of compositional complexity. Simplifying shale oil to alkanes in previous studies may overlook the influence of specific components on oil-water interfacial evolution, which governs two-phase flow. In this work, molecular dynamics (MD) simulations are used to investigate the flow behavior of multi-component oil and water within shale nanopores. Compared with alkanes, active component (n-decylamine) and heavy component (asphaltene) show preferential adsorption to the water layer at the oil-water interface, primarily driven by electrostatic interactions. Interestingly, this phenomenon significantly weakens the liquid-liquid slip at the oil-water interface and reduces the flow velocities. It also demonstrates that increasing the pressure gradient promotes desorption of n-decylamine and asphaltenes from the oil-water interface into the pure oil phase. Differences in interaction energy with the water layer lead to a relatively greater desorption of asphaltenes. For a 9 nm nanopore, an increased pressure gradient was found to induce a flow-regime transition from parabolic to piston-like. This study offers new insights into oil-water two-phase flow and provides theoretical guidance for optimizing shale oil production.
{"title":"Effects of oil-water interfacial evolution driven by oil compositional differences on two-phase flow in shale nanopores: A molecular perspective","authors":"Ziqing Liu , Long Xu , Mingyuan Xin , Tianning Fei , Guodong Yang , Houjian Gong , Mei-Chun Li , Hai Sun , Mingzhe Dong","doi":"10.1016/j.colsurfa.2026.139720","DOIUrl":"10.1016/j.colsurfa.2026.139720","url":null,"abstract":"<div><div>Hydraulic fracturing promotes widespread oil-water two-phase flow within shale nanopores. Real shale oil exhibits a high degree of compositional complexity. Simplifying shale oil to alkanes in previous studies may overlook the influence of specific components on oil-water interfacial evolution, which governs two-phase flow. In this work, molecular dynamics (MD) simulations are used to investigate the flow behavior of multi-component oil and water within shale nanopores. Compared with alkanes, active component (n-decylamine) and heavy component (asphaltene) show preferential adsorption to the water layer at the oil-water interface, primarily driven by electrostatic interactions. Interestingly, this phenomenon significantly weakens the liquid-liquid slip at the oil-water interface and reduces the flow velocities. It also demonstrates that increasing the pressure gradient promotes desorption of n-decylamine and asphaltenes from the oil-water interface into the pure oil phase. Differences in interaction energy with the water layer lead to a relatively greater desorption of asphaltenes. For a 9 nm nanopore, an increased pressure gradient was found to induce a flow-regime transition from parabolic to piston-like. This study offers new insights into oil-water two-phase flow and provides theoretical guidance for optimizing shale oil production.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139720"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076502","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}
Pub Date : 2026-05-20Epub Date: 2026-01-29DOI: 10.1016/j.colsurfa.2026.139767
Shuang Lin , Lingjun Zeng , Shiting Xu , Longyun Xiao , Yingying Wang , Bingkun Kang , Kaiqing You , Gezhen Lin , Minxin Zhang , Zhihong Liu , Xin Zhou
Current immune checkpoint inhibitors (ICIs) have transformed the landscape of cancer therapy. BMS-202 (BMS), a small-molecule ICI, offers advantages including lower molecular weight, easier synthesis, reduced cost, higher membrane permeability, and lower immunogenicity compared to macromolecular monoclonal antibodies. Similar to macromolecular ICIs, the efficacy of BMS is also limited by the immunosuppressive tumor microenvironment (TME). Paclitaxel (PTX), a classic anti-tumor drug, not only exerts direct cytotoxic effects but also induces immunogenic cell death (ICD), thereby remodeling the TME and potentially enhancing the efficacy of ICIs. To harness this synergistic potential, this study developed a human serum albumin (HSA)-based nanoplatform for the co-delivery of PTX and BMS, termed PTX/BMS@HSA. In vitro, PTX/BMS@HSA demonstrated significant advantages across multiple key aspects, such as enhanced cellular uptake, increased cytotoxicity, elevated ROS generation, and the induction of ICD. In vivo, this nanoparticle system demonstrated highly efficient accumulation in esophageal tumor tissues. Within the tumor microenvironment, PTX-triggered ICD and BMS-mediated blockade of PD-1/PD-L1 interaction work synergistically to reverse immunosuppression, thereby reactivating and restoring T cell function. These changes resulted in the elevation of dendritic cell maturation to 35.7 % and enhanced CD8⁺ T cell infiltration to 46.8 %. Consequently, PTX/BMS@HSA achieved remarkable tumor growth inhibition, with a suppression rate of 98.1 %, and effectively suppressed metastatic progression. This PTX/BMS@HSA presents a highly promising strategy for synergistic chemo-immunotherapy in esophageal carcinoma.
{"title":"Reversal of tumor immunosuppression and induction of potent antitumor immunity via albumin-based co-delivery of paclitaxel and a PD-L1 inhibitor","authors":"Shuang Lin , Lingjun Zeng , Shiting Xu , Longyun Xiao , Yingying Wang , Bingkun Kang , Kaiqing You , Gezhen Lin , Minxin Zhang , Zhihong Liu , Xin Zhou","doi":"10.1016/j.colsurfa.2026.139767","DOIUrl":"10.1016/j.colsurfa.2026.139767","url":null,"abstract":"<div><div>Current immune checkpoint inhibitors (ICIs) have transformed the landscape of cancer therapy. BMS-202 (BMS), a small-molecule ICI, offers advantages including lower molecular weight, easier synthesis, reduced cost, higher membrane permeability, and lower immunogenicity compared to macromolecular monoclonal antibodies. Similar to macromolecular ICIs, the efficacy of BMS is also limited by the immunosuppressive tumor microenvironment (TME). Paclitaxel (PTX), a classic anti-tumor drug, not only exerts direct cytotoxic effects but also induces immunogenic cell death (ICD), thereby remodeling the TME and potentially enhancing the efficacy of ICIs. To harness this synergistic potential, this study developed a human serum albumin (HSA)-based nanoplatform for the co-delivery of PTX and BMS, termed PTX/BMS@HSA. In vitro, PTX/BMS@HSA demonstrated significant advantages across multiple key aspects, such as enhanced cellular uptake, increased cytotoxicity, elevated ROS generation, and the induction of ICD. In vivo, this nanoparticle system demonstrated highly efficient accumulation in esophageal tumor tissues. Within the tumor microenvironment, PTX-triggered ICD and BMS-mediated blockade of PD-1/PD-L1 interaction work synergistically to reverse immunosuppression, thereby reactivating and restoring T cell function. These changes resulted in the elevation of dendritic cell maturation to 35.7 % and enhanced CD8⁺ T cell infiltration to 46.8 %. Consequently, PTX/BMS@HSA achieved remarkable tumor growth inhibition, with a suppression rate of 98.1 %, and effectively suppressed metastatic progression. This PTX/BMS@HSA presents a highly promising strategy for synergistic chemo-immunotherapy in esophageal carcinoma.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139767"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076522","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号