Pub Date : 2026-02-04DOI: 10.1016/j.colsurfa.2026.139843
Yuzhe Gao , Keyu Li , Feng Li , Xinyi Jiang , Junying Zhang , Hui Li , Pengcheng Li , Xiaoming Zhang
Transition metal oxides have attracted extensive attention as promising anode materials for lithium-ion batteries (LIBs) owing to their low cost and high theoretical capacities. Among them, spinel Co3O4 stands out due to its high reversible capacity and favorable electrochemical activity. However, severe volume expansion and rapid capacity decay during long-term cycling significantly limit its practical application. In this work, a Co3O4-CTS/MXene composite is rationally designed and synthesized through a combination of solvothermal treatment and electrostatic self-assembly, where chitosan-derived carbon spheres (CTS) and MXene nanosheets are simultaneously introduced. The CTS matrix effectively buffers volume variation, while MXene nanosheets construct a continuous conductive network, synergistically enhancing structural integrity and charge transport. As a result, the Co3O4-CTS/MXene anode exhibits improved cycling stability and rate performance compared with pristine Co3O4. These results demonstrate that the Co3O4-CTS/MXene composite is a promising anode candidate for lithium-ion batteries with enhanced electrochemical stability, and highlight the application potential of biomass-derived materials in advanced energy storage devices.
{"title":"Chitosan-derived carbon-Co3O4 /MXene composites for lithium-ion batteries anode","authors":"Yuzhe Gao , Keyu Li , Feng Li , Xinyi Jiang , Junying Zhang , Hui Li , Pengcheng Li , Xiaoming Zhang","doi":"10.1016/j.colsurfa.2026.139843","DOIUrl":"10.1016/j.colsurfa.2026.139843","url":null,"abstract":"<div><div>Transition metal oxides have attracted extensive attention as promising anode materials for lithium-ion batteries (LIBs) owing to their low cost and high theoretical capacities. Among them, spinel Co<sub>3</sub>O<sub>4</sub> stands out due to its high reversible capacity and favorable electrochemical activity. However, severe volume expansion and rapid capacity decay during long-term cycling significantly limit its practical application. In this work, a Co<sub>3</sub>O<sub>4</sub>-CTS/MXene composite is rationally designed and synthesized through a combination of solvothermal treatment and electrostatic self-assembly, where chitosan-derived carbon spheres (CTS) and MXene nanosheets are simultaneously introduced. The CTS matrix effectively buffers volume variation, while MXene nanosheets construct a continuous conductive network, synergistically enhancing structural integrity and charge transport. As a result, the Co<sub>3</sub>O<sub>4</sub>-CTS/MXene anode exhibits improved cycling stability and rate performance compared with pristine Co<sub>3</sub>O<sub>4</sub>. These results demonstrate that the Co<sub>3</sub>O<sub>4</sub>-CTS/MXene composite is a promising anode candidate for lithium-ion batteries with enhanced electrochemical stability, and highlight the application potential of biomass-derived materials in advanced energy storage devices.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139843"},"PeriodicalIF":5.4,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116379","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139771
Bingxue Liu , Chandrasekar Perumalveeramalai , Chuanbo Li , Peipei Ma , Bin Zou
This paper presents the fabrication of a vertical field-effect transistor (vFET) with multi-walled carbon nanotubes (MWCNT) as a porous source electrode. The optimized MWCNT electrodes, which were deposited on a SiO2/Si (100), followed by thermal annealing, showed a sheet resistance of ∼4.1 kΩ/□ and an electrical conductivity of 3.92 × 103 S/m at a layer thickness of ∼1.82 µm. A high-crystalline CsPbBr3 was deposited as the channel layer by chemical vapour deposition technique. The optimized condition for MWCNT electrode was used for fabricating vFET device with CsPbBr3 as the channel layer. The vFET has shown high on/off ratio of ∼106 in the p-channel region and ∼104 in the n-channel region. Our device has shown modulation of output current both at gate voltage and at drain voltage due to polarity change of Schottky contact at CNT/perovskite interface. This study establishes a novel approach to fabricate high-performance vertical transistors by using MWCNT as the source electrode.
{"title":"Dual modulation vertical transistor fabricated by CVD grown CsPbBr3 as channel layer and MWCNT as source electrode","authors":"Bingxue Liu , Chandrasekar Perumalveeramalai , Chuanbo Li , Peipei Ma , Bin Zou","doi":"10.1016/j.colsurfa.2026.139771","DOIUrl":"10.1016/j.colsurfa.2026.139771","url":null,"abstract":"<div><div>This paper presents the fabrication of a vertical field-effect transistor (vFET) with multi-walled carbon nanotubes (MWCNT) as a porous source electrode. The optimized MWCNT electrodes, which were deposited on a SiO<sub>2</sub>/Si (100), followed by thermal annealing, showed a sheet resistance of ∼4.1 kΩ/□ and an electrical conductivity of 3.92 × 10<sup>3</sup> S/m at a layer thickness of ∼1.82 µm. A high-crystalline CsPbBr<sub>3</sub> was deposited as the channel layer by chemical vapour deposition technique. The optimized condition for MWCNT electrode was used for fabricating vFET device with CsPbBr<sub>3</sub> as the channel layer. The vFET has shown high on/off ratio of ∼10<sup>6</sup> in the p-channel region and ∼10<sup>4</sup> in the n-channel region. Our device has shown modulation of output current both at gate voltage and at drain voltage due to polarity change of Schottky contact at CNT/perovskite interface. This study establishes a novel approach to fabricate high-performance vertical transistors by using MWCNT as the source electrode.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139771"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076503","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139768
Haifeng Wang , Zhengsong Hu , Jie Xu , Chaoyang Li , Aokun Lin , Kunkun Zhu , Li Yu , Guanxiang Ma , Yuwen Liu , Haifeng Bao
Capturing gas bubbles in liquid is vital for the gas-liquid-solid (GLS) three-phase reactions due to the limited gas solubility. Constructing the special porous skeleton for bubble accommodation opens an opportunity to drag bubbles in liquid. Herein, mm-sized Pd-anchored cellulose/agarose (PCA) spheres with a highly porous architecture have been fabricated using a liquid nitrogen-freezing method. PCA particles could act as gas carrier to accommodate a variety of gas bubbles in liquid, including H2, O2, air, and CO2 via an in-situ nucleation route. Moreover, these PCA beads enabled efficient multiphase catalysis as demonstrated by cascade reduction of a series of substances, such as aldehydes, nitroarenes, and alkenes. Their catalytic activities remarkably surpassed Pd-deposited solid glass spheres (PG) and sole Pd nanoparticles, manifesting the important role of their porous texture in gas harvesting and storage. A gas (H2) utilization of 98.0 % was attained for multiphase reaction over PCA beads. During multiphase reaction process, a controllable motion of PCA spheres was achieved via gas reservation or consumption. This work provides a profound inspiration for bubble arresting and stabilization toward regulable movement and multiphase processes.
{"title":"In-situ generation of gas bubbles in porous gel spheres for multiphase catalysis","authors":"Haifeng Wang , Zhengsong Hu , Jie Xu , Chaoyang Li , Aokun Lin , Kunkun Zhu , Li Yu , Guanxiang Ma , Yuwen Liu , Haifeng Bao","doi":"10.1016/j.colsurfa.2026.139768","DOIUrl":"10.1016/j.colsurfa.2026.139768","url":null,"abstract":"<div><div>Capturing gas bubbles in liquid is vital for the gas-liquid-solid (GLS) three-phase reactions due to the limited gas solubility. Constructing the special porous skeleton for bubble accommodation opens an opportunity to drag bubbles in liquid. Herein, mm-sized Pd-anchored cellulose/agarose (PCA) spheres with a highly porous architecture have been fabricated using a liquid nitrogen-freezing method. PCA particles could act as gas carrier to accommodate a variety of gas bubbles in liquid, including H<sub>2</sub>, O<sub>2</sub>, air, and CO<sub>2</sub> via an in-situ nucleation route. Moreover, these PCA beads enabled efficient multiphase catalysis as demonstrated by cascade reduction of a series of substances, such as aldehydes, nitroarenes, and alkenes. Their catalytic activities remarkably surpassed Pd-deposited solid glass spheres (PG) and sole Pd nanoparticles, manifesting the important role of their porous texture in gas harvesting and storage. A gas (H<sub>2</sub>) utilization of 98.0 % was attained for multiphase reaction over PCA beads. During multiphase reaction process, a controllable motion of PCA spheres was achieved via gas reservation or consumption. This work provides a profound inspiration for bubble arresting and stabilization toward regulable movement and multiphase processes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139768"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076671","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139796
Honglei Zhao, Liya Zhang, Zeyi Wang, Shumei Zhai, Jingcheng Hao
Spray application of pesticides increases the air humidity and promotes the spread of moisture-loving diseases. Existing hydrogels used for pesticides local applications cannot simultaneously meet the requirements of improving loading amount, reducing costs, and increasing utilization of pesticides in humid and rainy conditions. In this work, a gelatin-based eutectogel was developed using betaine (BET) and ethylene glycol (EG) as the deep eutectic solvent (DES) system for tebuconazole (Teb) delivery. The gelatin/BET-EG eutectogel owned a Teb loading capacity 89.4 times higher than that of a gelatin hydrogel. The cumulative release rate of Teb in water reached 77 % after 7 days, which followed first-order kinetic equation, and the DES in gelatin/BET-EG eutectogel was confirmed to be replaced by water. Under 70 % relative humidity and 300 wt% water infiltration conditions, the highest release rates of Teb were 47 % and 55 %, respectively. The release rates of Teb in gels suspended in the air and placed on the soil surface were 22 % and 42 % respectively after 10 min of simulated rainfall. Further research confirmed the influence by loading amount, pH, temperature, and soil type on water-triggered Teb release. The eutectogel degraded rapidly within 10 days in soil and showed negligible toxicity to Chlorella vulgaris (72 h, IC₅₀ = 21.23 g/L). These findings highlighted the potential of gelatin/BET-EG eutectogel as a green and efficient platform for pesticide delivery in sustainable agriculture.
{"title":"Gelatin-based eutectogel for water-triggered release of tebuconazole in humid and rainy agricultural environments","authors":"Honglei Zhao, Liya Zhang, Zeyi Wang, Shumei Zhai, Jingcheng Hao","doi":"10.1016/j.colsurfa.2026.139796","DOIUrl":"10.1016/j.colsurfa.2026.139796","url":null,"abstract":"<div><div>Spray application of pesticides increases the air humidity and promotes the spread of moisture-loving diseases. Existing hydrogels used for pesticides local applications cannot simultaneously meet the requirements of improving loading amount, reducing costs, and increasing utilization of pesticides in humid and rainy conditions. In this work, a gelatin-based eutectogel was developed using betaine (BET) and ethylene glycol (EG) as the deep eutectic solvent (DES) system for tebuconazole (Teb) delivery. The gelatin/BET-EG eutectogel owned a Teb loading capacity 89.4 times higher than that of a gelatin hydrogel. The cumulative release rate of Teb in water reached 77 % after 7 days, which followed first-order kinetic equation, and the DES in gelatin/BET-EG eutectogel was confirmed to be replaced by water. Under 70 % relative humidity and 300 wt% water infiltration conditions, the highest release rates of Teb were 47 % and 55 %, respectively. The release rates of Teb in gels suspended in the air and placed on the soil surface were 22 % and 42 % respectively after 10 min of simulated rainfall. Further research confirmed the influence by loading amount, pH, temperature, and soil type on water-triggered Teb release. The eutectogel degraded rapidly within 10 days in soil and showed negligible toxicity to <em>Chlorella vulgaris</em> (72 h, IC₅₀ = 21.23 g/L). These findings highlighted the potential of gelatin/BET-EG eutectogel as a green and efficient platform for pesticide delivery in sustainable agriculture.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139796"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076405","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139776
S. Fatine , J. Khmiyas , A. Hami , L. Sbabou , A. Laghzizil
This study highlights the effect of oxygen vacancies generated by the substitution of Ca²⁺ with Bi³⁺ in Ca10-xBix(PO4)6(OH)2-xOx apatites for photocatalytic degradation of oxytetracycline (OTC) under UV and visible light. Characterizations reveal that the introduction of Bi³⁺ induces the formation of structural oxygen vacancies and modifies the electronic properties, with a substitution limit fixed at x = 0.3. Photocatalytic tests show that the controlled presence of these vacancies improves charge separation and the generation of reactive species, allowing a complete OTC degradation with x = 0.1. These results demonstrate the key role of Bi substitution and the formed oxygen vacancies in the design of efficient apatite-based photocatalysts.
{"title":"Structure and surface of Ca10-xBix(PO4)6(OH)2-xOx solid solutions for light-driven photocatalytic degradation of oxytetracycline","authors":"S. Fatine , J. Khmiyas , A. Hami , L. Sbabou , A. Laghzizil","doi":"10.1016/j.colsurfa.2026.139776","DOIUrl":"10.1016/j.colsurfa.2026.139776","url":null,"abstract":"<div><div>This study highlights the effect of oxygen vacancies generated by the substitution of Ca²⁺ with Bi³⁺ in Ca<sub>10-x</sub>Bi<sub>x</sub>(PO<sub>4</sub>)<sub>6</sub>(OH)<sub>2-x</sub>O<sub>x</sub> apatites for photocatalytic degradation of oxytetracycline (OTC) under UV and visible light. Characterizations reveal that the introduction of Bi³⁺ induces the formation of structural oxygen vacancies and modifies the electronic properties, with a substitution limit fixed at x = 0.3. Photocatalytic tests show that the controlled presence of these vacancies improves charge separation and the generation of reactive species, allowing a complete OTC degradation with x = 0.1. These results demonstrate the key role of Bi substitution and the formed oxygen vacancies in the design of efficient apatite-based photocatalysts.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139776"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076630","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}
Effective dye removal from wastewater plays a vital role in safeguarding the environment and enabling the reuse of water resources. Membrane separation is regarded as an ideal choice for treating dyeing wastewater. However, complex dyeing wastewater poses significant challenges for membrane technology, where the need for selective separation and membrane fouling impede its broader application. Herein, a stable super-hydrophilic separation layer was constructed on polyethersulfone (PES) conductive composite membranes via the co-assembly of polyvinyl amine (PVAM) and tannic acid (TA). This design leveraged the synergistic effects between superhydrophilicity and electrical responsiveness to achieve excellent separation and antifouling performances against various dyes. Moreover, the compactness of separation layers was precisely manipulated by adjusting the TA concentration to further optimize the membrane performance through maximizing the size-sieving effect. Consequently, in the electro-assisted filtration, the optimal membrane delivered high rejection and permeation flux for negatively charged Congo red (≥95.4 ± 1.0 %, ≥266.1 ± 16.6 L/m2·h·bar) as the cathode and for positively charged methyl green (≥95.1 ± 1.1 %, ≥401.8 ± 22.5 L/m2·h·bar) as the anode. Simultaneously, the combination of enhanced electrostatic repulsion and the scouring from electrolytically generated micro/nano bubbles enabled the superior flux recovery ratios for Congo red (97.6 ± 1.2 %) at -3V and methyl green (98.2 ± 1.3 %) at + 3 V, indicating excellent antifouling properties. Furthermore, the membrane also exhibited highly stable permeate fluxes and rejections over 36 h of continuous filtration and five cycles, demonstrating its promise for practical application in treating dyeing wastewater. This study proposes a novel fabrication strategy for next-generation intelligent membranes, thereby promoting the precise treatment of complex wastewater.
有效去除废水中的染料对保护环境和实现水资源的再利用起着至关重要的作用。膜分离被认为是处理印染废水的理想选择。然而，复杂的印染废水对膜技术提出了重大挑战，其中需要选择性分离和膜污染阻碍了膜技术的广泛应用。本文通过聚乙烯胺（PVAM）和单宁酸（TA）的共组装，在聚醚砜（PES）导电复合膜上构建了稳定的超亲水性分离层。这种设计利用了超亲水性和电响应性之间的协同效应，实现了对各种染料的优异分离和防污性能。此外，通过调整TA浓度，精确控制分离层的致密性，通过最大化筛分效果，进一步优化膜的性能。因此,electro-assisted过滤,最优膜传递高排斥和渗透通量为带负电荷的刚果红(≥95.4 ±1.0 %, ≥266.1±16.6 L /平方米·h·bar)的阴极和带正电的甲基绿(≥95.1 ±1.1 %, ≥401.8±22.5 L /平方米·h·bar)作为阳极。同时，静电斥力的增强和电解产生的微纳气泡的冲刷作用的结合，使得刚刚红在-3V下的通量回收率为97.6 ± 1.2 %，甲基绿在+ 3 V下的通量回收率为98.2 ± 1.3 %，表明了优异的防污性能。此外，该膜在36 h的连续过滤和5个循环中表现出高度稳定的渗透通量和截留率，表明其在处理印染废水方面具有实际应用前景。本研究提出了一种新一代智能膜的制造策略，从而促进复杂废水的精确处理。
{"title":"A super-hydrophilic separation layer on polyethersulfone conductive composite membranes for efficient dyeing wastewater treatment","authors":"Huiju Shao , Wei Gao , Mingmi Wu , Ting Lei , Shuhao Qin","doi":"10.1016/j.colsurfa.2026.139770","DOIUrl":"10.1016/j.colsurfa.2026.139770","url":null,"abstract":"<div><div>Effective dye removal from wastewater plays a vital role in safeguarding the environment and enabling the reuse of water resources. Membrane separation is regarded as an ideal choice for treating dyeing wastewater. However, complex dyeing wastewater poses significant challenges for membrane technology, where the need for selective separation and membrane fouling impede its broader application. Herein, a stable super-hydrophilic separation layer was constructed on polyethersulfone (PES) conductive composite membranes via the co-assembly of polyvinyl amine (PVAM) and tannic acid (TA). This design leveraged the synergistic effects between superhydrophilicity and electrical responsiveness to achieve excellent separation and antifouling performances against various dyes. Moreover, the compactness of separation layers was precisely manipulated by adjusting the TA concentration to further optimize the membrane performance through maximizing the size-sieving effect. Consequently, in the electro-assisted filtration, the optimal membrane delivered high rejection and permeation flux for negatively charged Congo red (≥95.4 ± 1.0 %, ≥266.1 ± 16.6 L/m<sup>2</sup>·h·bar) as the cathode and for positively charged methyl green (≥95.1 ± 1.1 %, ≥401.8 ± 22.5 L/m<sup>2</sup>·h·bar) as the anode. Simultaneously, the combination of enhanced electrostatic repulsion and the scouring from electrolytically generated micro/nano bubbles enabled the superior flux recovery ratios for Congo red (97.6 ± 1.2 %) at -3V and methyl green (98.2 ± 1.3 %) at + 3 V, indicating excellent antifouling properties. Furthermore, the membrane also exhibited highly stable permeate fluxes and rejections over 36 h of continuous filtration and five cycles, demonstrating its promise for practical application in treating dyeing wastewater. This study proposes a novel fabrication strategy for next-generation intelligent membranes, thereby promoting the precise treatment of complex wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139770"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076525","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139791
Fateme Tahmasebi Sefiddashti, Maryam Homayoonfal
This study explored the separation of O-W emulsions using hydrophilic and hydrophobic membranes. For this purpose, two groups of hydrophilic membranes (LMs) and hydrophobic membranes (BMs) were fabricated. In the hydrophilic membranes group, simultaneous methods of modifying the membrane structure and adjusting the operating conditions were applied, while in the hydrophobic membranes group, structural modification and membrane pre-treatment were utilized to enhance the filtration efficiency. The results revealed that applying external stimuli of light and pH to hydrophilic membranes as well as preheating to hydrophobic membranes boosted the membrane performance. So that the use of TiO2 and P4VP modifier in LM3 led to a flux of 75.83 LMH of T/W emulsion, while the flux of LM0 was measured 26 LMH. In addition, the rejection of LM3 was calculated to be 99.76 % under acidic pH with light irradiation and 92 % under neutral pH without light exposure, while for LM0, it was 88.67 %. In the hydrophobic membrane group, in W/T emulsion separation, due to the presence of hydrophobic SiO2 the flux of BM3 was measured to be 40.44 LMH, while the flux of BM0 was 11.84 LMH. Furthermore, the rejection of BM3 with and without thermal treatment was calculated to be 98.02 % and 96.9 %, respectively, while for BM0, it was calculated to be 87.56 %. Also, LM3 achieved a flux of 58.3 LMH and 96.25 % rejection for real wastewater, while BM3 showed 48.32 LMH flux and 97.25 % rejection for high-salinity water-in-oil emulsion. Furthermore, after ten cycles, their rejections remained above 94 % for both synthetic and real wastewater.
{"title":"Smart hydrophilic and hydrophobic membranes for oil-water emulsion separation: Light, pH, and thermally-responsive strategies","authors":"Fateme Tahmasebi Sefiddashti, Maryam Homayoonfal","doi":"10.1016/j.colsurfa.2026.139791","DOIUrl":"10.1016/j.colsurfa.2026.139791","url":null,"abstract":"<div><div>This study explored the separation of O-W emulsions using hydrophilic and hydrophobic membranes. For this purpose, two groups of hydrophilic membranes (LMs) and hydrophobic membranes (BMs) were fabricated. In the hydrophilic membranes group, simultaneous methods of modifying the membrane structure and adjusting the operating conditions were applied, while in the hydrophobic membranes group, structural modification and membrane pre-treatment were utilized to enhance the filtration efficiency. The results revealed that applying external stimuli of light and pH to hydrophilic membranes as well as preheating to hydrophobic membranes boosted the membrane performance. So that the use of TiO<sub>2</sub> and P4VP modifier in LM<sub>3</sub> led to a flux of 75.83 LMH of T/W emulsion, while the flux of LM<sub>0</sub> was measured 26 LMH. In addition, the rejection of LM<sub>3</sub> was calculated to be 99.76 % under acidic pH with light irradiation and 92 % under neutral pH without light exposure, while for LM<sub>0</sub>, it was 88.67 %. In the hydrophobic membrane group, in W/T emulsion separation, due to the presence of hydrophobic SiO<sub>2</sub> the flux of BM<sub>3</sub> was measured to be 40.44 LMH, while the flux of BM<sub>0</sub> was 11.84 LMH. Furthermore, the rejection of BM<sub>3</sub> with and without thermal treatment was calculated to be 98.02 % and 96.9 %, respectively, while for BM<sub>0</sub>, it was calculated to be 87.56 %. Also, LM<sub>3</sub> achieved a flux of 58.3 LMH and 96.25 % rejection for real wastewater, while BM<sub>3</sub> showed 48.32 LMH flux and 97.25 % rejection for high-salinity water-in-oil emulsion. Furthermore, after ten cycles, their rejections remained above 94 % for both synthetic and real wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139791"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116376","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 : 2026-01-30DOI: 10.1016/j.colsurfa.2026.139772
Aylin Ahmadinia , Carmel B. Breslin
Magnesium and its alloys are highly prone to corrosion. In this study, a multi-layered coating comprising layered cerium carbonate hydroxide CeCO3OH, (LH), modified with a surfactant (sodium dodecyl benzene sulfonate (SDBS)), and topped with an epoxy biopolymer, (T), was developed for the corrosion protection of magnesium. This epoxy topcoat was formulated from tannic acid to provide a sustainable, environmentally acceptable coating system. The optimal concentration of SDBS was 0.05 M, ensuring effective interactions between the LH and the epoxy topcoat. Using scanning electron microscopy, energy-dispersive X-ray analysis, and X-ray diffraction, the CeCO3OH layer was confirmed to contain a high concentration of Ce with high crystallinity. To evaluate the protective properties of the coatings, potentiodynamic polarisation and electrochemical impedance spectroscopy were performed in a 3.5 wt% NaCl solution across a wide pH range from 2.0 to 10.0. Excellent corrosion protection was achieved with a coating formulation combining the LH modified with a layer of 0.05 M SDBS and a final topcoat of epoxy (Mg/LH/S0.05/T). The corrosion current measured for the optimal sample was very low at 5.2 nA, with a corrosion potential of –1.58 V. Excellent corrosion protection was achieved from a pH of 2.0 (5.5 nA) to a pH 10.0 (2.0 nA). EIS analysis further demonstrated a substantial increase in the overall impedance compared to the unmodified coated samples. The coated sample exhibited a low capacitance of 4.5 × 10−11 F and a polarisation resistance of 3.6 × 105 Ω. Good stability was evident over a 40 day period, with evidence of loss in the corrosion protection properties following 40–50 days of immersion.
{"title":"Biopolymer-modified layered cerium carbonate hydroxide coatings on magnesium with a surfactant interface for enhanced corrosion protection","authors":"Aylin Ahmadinia , Carmel B. Breslin","doi":"10.1016/j.colsurfa.2026.139772","DOIUrl":"10.1016/j.colsurfa.2026.139772","url":null,"abstract":"<div><div>Magnesium and its alloys are highly prone to corrosion. In this study, a multi-layered coating comprising layered cerium carbonate hydroxide CeCO<sub>3</sub>OH, (LH), modified with a surfactant (sodium dodecyl benzene sulfonate (SDBS)), and topped with an epoxy biopolymer, (T), was developed for the corrosion protection of magnesium. This epoxy topcoat was formulated from tannic acid to provide a sustainable, environmentally acceptable coating system. The optimal concentration of SDBS was 0.05 M, ensuring effective interactions between the LH and the epoxy topcoat. Using scanning electron microscopy, energy-dispersive X-ray analysis, and X-ray diffraction, the CeCO<sub>3</sub>OH layer was confirmed to contain a high concentration of Ce with high crystallinity. To evaluate the protective properties of the coatings, potentiodynamic polarisation and electrochemical impedance spectroscopy were performed in a 3.5 wt% NaCl solution across a wide pH range from 2.0 to 10.0. Excellent corrosion protection was achieved with a coating formulation combining the LH modified with a layer of 0.05 M SDBS and a final topcoat of epoxy (Mg/LH/S<sub>0.05</sub>/T). The corrosion current measured for the optimal sample was very low at 5.2 nA, with a corrosion potential of –1.58 V. Excellent corrosion protection was achieved from a pH of 2.0 (5.5 nA) to a pH 10.0 (2.0 nA). EIS analysis further demonstrated a substantial increase in the overall impedance compared to the unmodified coated samples. The coated sample exhibited a low capacitance of 4.5 × 10<sup>−11</sup> F and a polarisation resistance of 3.6 × 10<sup>5</sup> Ω. Good stability was evident over a 40 day period, with evidence of loss in the corrosion protection properties following 40–50 days of immersion.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139772"},"PeriodicalIF":5.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116377","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}
A ratiometric fluorescent sensor was developed for the determination of the herbicide propazine. The sensor was fabricated using an iron-based metal-organic framework (NH2-MIL-101(Fe)) incorporated into a molecularly imprinted polymer (MIP). The fabricated nanoprobe emitted high fluorescence intensity at 444 nm, which was used as the sensing signal. The fluorescence emission of rhodamine B (RhB) at 574 nm was used as the reference signal. The sensing probe was characterized, and the construction and detection conditions were optimized. The quantitative analysis of propazine was based on the fluorescence quenching of the sensing nanoprobe by propazine. The NH2-MIL-101(Fe)@MIP/RhB system exhibited a linear range from 20.0 to 1000.0 μg L−1 with a detection limit of 9.1 μg L−1. The fabricated nanoprobe was applied to determine propazine in plant-based milk samples. Recoveries were achieved in the range of 91.2–108.7 % with RSDs lower than 12 %. For on-site detection, a smartphone-assisted device was employed to measure fluorescence color changes, offering portability, rapid analysis, and cost-effectiveness. The developed sensing probe provided a reliable and efficient approach for on-site analysis, and the results were consistent with HPLC-DAD analysis.
{"title":"Ratiometric fluorescent sensor using molecularly imprinted polymer with a metal-organic framework for the determination of propazine","authors":"Chonthicha Buachumthamrongsuk , Noppanut Longnapa , Opas Bunkoed","doi":"10.1016/j.colsurfa.2026.139764","DOIUrl":"10.1016/j.colsurfa.2026.139764","url":null,"abstract":"<div><div>A ratiometric fluorescent sensor was developed for the determination of the herbicide propazine. The sensor was fabricated using an iron-based metal-organic framework (NH<sub>2</sub>-MIL-101(Fe)) incorporated into a molecularly imprinted polymer (MIP). The fabricated nanoprobe emitted high fluorescence intensity at 444 nm, which was used as the sensing signal. The fluorescence emission of rhodamine B (RhB) at 574 nm was used as the reference signal. The sensing probe was characterized, and the construction and detection conditions were optimized. The quantitative analysis of propazine was based on the fluorescence quenching of the sensing nanoprobe by propazine. The NH<sub>2</sub>-MIL-101(Fe)@MIP/RhB system exhibited a linear range from 20.0 to 1000.0 μg L<sup>−1</sup> with a detection limit of 9.1 μg L<sup>−1</sup>. The fabricated nanoprobe was applied to determine propazine in plant-based milk samples. Recoveries were achieved in the range of 91.2–108.7 % with RSDs lower than 12 %. For on-site detection, a smartphone-assisted device was employed to measure fluorescence color changes, offering portability, rapid analysis, and cost-effectiveness. The developed sensing probe provided a reliable and efficient approach for on-site analysis, and the results were consistent with HPLC-DAD analysis.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139764"},"PeriodicalIF":5.4,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076523","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 : 2026-01-29DOI: 10.1016/j.colsurfa.2026.139757
Shu Wang , Jie Liu , Yupu Liu , Dongxu Shi, Jialu Xu, Shuang Han, Wenlong Yang
In this work, we propose "nano-lab" concept for precisely regulating the energy band structure of heterojunction photocatalysts to achieve tailored heterostructure modulation. The heterostructure was constructed via in situ deposition growth, while atomic doping strategies were employed to precisely modulate the band edge positions. A combination of systematic experimental characterizations and theoretical simulations was utilized to elucidate the charge transfer pathway, heterostructure evolution, and the underlying mechanism of the heterojunction effect. Based on a non-ideal Type-I heterojunction, the introduction of Fe 3d and Zn 4 s orbitals selectively modulated the valence band of SrTiO3 and the conduction band of Zn0.7Cd0.3S, respectively. This resulted in a sequential transformation of the heterostructure from Type-I (CdS/SrTiO₃) to Type-Ⅱ (CdS/Fe–SrTiO₃) and finally to an S-scheme configuration (Zn0.7Cd0.3S/Fe–SrTiO₃). As a result, efficient spatial charge separation was achieved in both CdS/Fe–SrTiO₃ and Zn0.7Cd0.3S/Fe–SrTiO₃, with the latter exhibiting superior redox thermodynamic potentials. Although Zn0.7Cd0.3S/Fe–SrTiO₃ demonstrated the highest Cr(VI) degradation performance, it showed only the second-best H₂ evolution activity due to its reduced visible-light absorption and higher H* adsorption free energy compared to CdS/Fe–SrTiO₃. Therefore, the optimal photocatalyst should not be determined solely by the heterostructure type, but rather by the synergistic interplay of multiple factors governing photocatalytic efficiency.
{"title":"Heterojunction tailored-engineering for enhanced photoreduction applications on H2 production and Cr(VI) degradation","authors":"Shu Wang , Jie Liu , Yupu Liu , Dongxu Shi, Jialu Xu, Shuang Han, Wenlong Yang","doi":"10.1016/j.colsurfa.2026.139757","DOIUrl":"10.1016/j.colsurfa.2026.139757","url":null,"abstract":"<div><div>In this work, we propose \"nano-lab\" concept for precisely regulating the energy band structure of heterojunction photocatalysts to achieve tailored heterostructure modulation. The heterostructure was constructed via in situ deposition growth, while atomic doping strategies were employed to precisely modulate the band edge positions. A combination of systematic experimental characterizations and theoretical simulations was utilized to elucidate the charge transfer pathway, heterostructure evolution, and the underlying mechanism of the heterojunction effect. Based on a non-ideal Type-I heterojunction, the introduction of Fe 3d and Zn 4 s orbitals selectively modulated the valence band of SrTiO<sub>3</sub> and the conduction band of Zn<sub>0.7</sub>Cd<sub>0.3</sub>S, respectively. This resulted in a sequential transformation of the heterostructure from Type-I (CdS/SrTiO₃) to Type-Ⅱ (CdS/Fe–SrTiO₃) and finally to an S-scheme configuration (Zn<sub>0.7</sub>Cd<sub>0.3</sub>S/Fe–SrTiO₃). As a result, efficient spatial charge separation was achieved in both CdS/Fe–SrTiO₃ and Zn<sub>0.7</sub>Cd<sub>0.3</sub>S/Fe–SrTiO₃, with the latter exhibiting superior redox thermodynamic potentials. Although Zn<sub>0.7</sub>Cd<sub>0.3</sub>S/Fe–SrTiO₃ demonstrated the highest Cr(VI) degradation performance, it showed only the second-best H₂ evolution activity due to its reduced visible-light absorption and higher H* adsorption free energy compared to CdS/Fe–SrTiO₃. Therefore, the optimal photocatalyst should not be determined solely by the heterostructure type, but rather by the synergistic interplay of multiple factors governing photocatalytic efficiency.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139757"},"PeriodicalIF":5.4,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076622","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}
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