Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第8页

Study on the demulsification mechanism of O/W emulsions treated by direct current electric field 直流电场处理油水乳状液破乳机理研究

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-31 DOI: 10.1016/j.colsurfa.2026.139807

Miqi Niu , Yuling Lü , Tingyi Wang , Fuyong Huo , Xiang Ma

Industrial production processes generate oily wastewater with complex compositions. Without effective treatment, this wastewater severely impacts the ecological environment and causes water pollution. An analysis of the crude oil's physical properties was conducted, along with an investigation into the emulsification features of oil-in-water emulsions. Subsequently, by establishing a macro-scale experimental system, the thickness of the top oil film and the oil concentration in the bottom wastewater were selected as monitoring indicators. An investigation was performed to evaluate the influence of electric field strength, initial oil concentration, and temperature on the electro-demulsification efficiency of O/W emulsions. In addition, the coalescence mechanism of oil droplets during demulsification was investigated, and insights from molecular-level simulations were provided. Results indicate that stronger electric currents, higher temperatures, and lower initial oil concentrations yield better demulsification performance, resulting in lower final wastewater oil concentrations. This occurs because oil droplets in water carry negative charges. Molecular dynamics studies further reveal that negatively charged natural surfactants present in the O/W emulsion induce directed movement of oil droplets, leading to coalescence and separation. This technology provides an effective process solution for treating oily wastewater in oilfields and offers theoretical guidance for practical applications.

工业生产过程产生的含油废水具有复杂的成分。该废水未经有效处理，严重影响生态环境，造成水污染。对原油的物性进行了分析，并对水包油乳液的乳化特性进行了研究。随后，通过建立宏观实验体系，选取顶部油膜厚度和底部废水中油浓度作为监测指标。考察了电场强度、初始油浓度和温度对油水乳状液电破乳效果的影响。此外，研究了破乳过程中油滴的聚结机理，并从分子水平模拟中获得了新的见解。结果表明，电流越强、温度越高、初始油浓度越低，破乳效果越好，最终废水油浓度也越低。这是因为水中的油滴携带负电荷。分子动力学研究进一步表明，带负电荷的天然表面活性剂存在于油水乳状液中，诱导油滴定向运动，导致油滴聚并分离。该技术为油田含油废水的处理提供了有效的工艺方案，为实际应用提供了理论指导。

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引用次数: 0

Self-assembled cross-linking composite electrospun nanofiber membranes: Synergistic antibacterial action and enhanced wound healing performance 自组装交联复合静电纺纳米纤维膜：协同抗菌作用和增强伤口愈合性能

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-02 DOI: 10.1016/j.colsurfa.2026.139832

Wenbo Wu , Zutong Cui , Qing Li , Dongxue Ning , Xiujuan Liu , Bingbing Li , Zhiwei Liu , Jian Li , Tifeng Jiao

This study develops a novel polyvinyl alcohol/polyethylene oxide/polyhexamethylene biguanide hydrochloride/benzalkonium chloride (PVA/PEO/PHMB/BAC, designated POBC) electrospun nanofiber membrane with dual-antimicrobial synergy for advanced wound management. To address the inherent water solubility of PVA, glutaraldehyde vapor-phase crosslinking (POBC-crossing) was employed to enhance hydrophobicity and mechanical stability. The optimized membrane exhibited uniform fiber morphology (diameter: 170 nm) and significantly improved tensile strength (6 MPa post-crossing). FTIR and XRD analyses confirmed successful chemical crosslinking and amorphous structural characteristics. The dual antibacterial system showed a synergistic effect and exhibited good antibacterial activity against both Staphylococcus aureus and Escherichia coli. Biocompatibility was validated by high cell viability (>97 %) and low hemolysis rate (2.59 %). In vivo studies on full-thickness wounds in mice revealed accelerated healing, with POBC-crossing achieving near-complete closure by day 14. Histological analysis confirmed enhanced collagen deposition, granulation tissue formation, and neovascularization, coupled with reduced IL-6 expression. The multifunctional membrane integrates optimal breathability (WVTR: 1273 g·m^-²·d^-¹), antibacterial efficacy, and biocompatibility, demonstrating potential for clinical wound dressings.

本研究开发了一种新型聚乙烯醇/聚环氧乙烷/聚六亚甲基二胍/苯扎氯铵（PVA/PEO/PHMB/BAC，简称POBC）电纺丝纳米纤维膜，具有双抗菌协同作用，用于高级伤口管理。为了解决聚乙烯醇固有的水溶性问题，采用戊二醛气相交联（pobc -交联）来提高聚乙烯醇的疏水性和机械稳定性。优化后的膜具有均匀的纤维形态（直径170 nm）和显著提高的抗拉强度（6 MPa）。FTIR和XRD分析证实了成功的化学交联和非晶结构特征。双抑菌体系具有协同作用，对金黄色葡萄球菌和大肠杆菌均有良好的抑菌活性。高细胞活力（>97 %）和低溶血率（2.59 %）验证了生物相容性。小鼠全层伤口的体内研究显示愈合加速，pobc交叉在第14天几乎完全闭合。组织学分析证实胶原沉积、肉芽组织形成和新生血管增强，并伴有IL-6表达降低。该多功能膜具有最佳的透气性（WVTR: 1273 g·m-²·d-¹）、抗菌效果和生物相容性，具有临床伤口敷料的潜力。

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引用次数: 0

Auxetic networks inspired by the leaf structure of Cycas for fog water collection 受苏铁树叶结构启发的辅助网络，用于雾水收集

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-19 DOI: 10.1016/j.colsurfa.2026.139618

Xiuchao Zhou , Zhiguang Guo

As is well known, fog nets were successfully applied as early as 1987 to obtain fresh water, but the efficiency of collecting droplets was too low due to relying solely on gravity separation. Inspired by cactus leaf spines, Cycas leaves, and the back of desert beetles, a tensile expansion integrated grid (HB-HL SS) consisting of a 2D conical spine array, microchannels, and biomimetic leaves was fabricated through laser etching of stainless steel foil (SS). In addition, hydrophobic spines were prepared by spraying an integrated suspension of aluminum phosphate adhesive and hydrophobic SiO₂ particles, while the hydrophilic channel running through the center of the biomimetic blade was retained using a PTFE mask. Aim to achieve efficient fog water collection through the synergistic effect of Laplace pressure difference and wetting gradient. The channel is connected in series with various water collection units through hinges. By stretching and rotating the hinges, the grid can be extended radially, and the cross-sectional area can be expanded by about 59 % while changing the aerodynamic shape. By reasonable selection of spine structure parameters and asymmetric wetting channels, the fog collection efficiency of HB-HL SS reached 299.80 mg cm⁻² h⁻¹, which is 3.9 times that of the original sample SS. This result demonstrates that the auxetic networks exhibits efficient fog deposition efficiency and aerodynamic collection efficiency in fog collection. Combined with the droplet biomimetic driving model, it further promotes the fog collection cycle that integrates fog deposition, growth, and driving.

众所周知，早在1987年就成功地应用了雾网来获取淡水，但由于完全依靠重力分离，收集水滴的效率太低。受仙人掌叶刺、苏铁叶和沙漠甲虫背部的启发，通过激光蚀刻不锈钢箔（SS），制作了一个由二维锥形脊柱阵列、微通道和仿生叶片组成的拉伸扩展集成网格（HB-HL SS）。此外，通过喷涂磷酸铝胶粘剂和疏水性SiO2颗粒的整体悬浮液制备疏水刺，同时使用聚四氟乙烯掩膜保留穿过仿生叶片中心的亲水性通道。目的通过拉氏压差和润湿梯度的协同作用，实现高效的雾水收集。该通道通过铰链与各种集水单元串联。通过铰链的拉伸和旋转，栅格可以向径向扩展，在改变气动形状的同时，横截面积可以扩大约59 %。通过合理选择棘叶结构参数和非对称湿润通道，HB-HL SS的集雾效率达到299.80 mg cm−2 h−1，是原样品SS的3.9倍。结果表明，消声网络在雾收集中具有高效的雾沉积效率和空气动力收集效率。结合液滴仿生驱动模型，进一步促进集雾沉积、生长、驱动于一体的集雾循环。

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引用次数: 0

Escin solutions: Effects of pH and electrolytes on their behavior Escin溶液：pH值和电解质对其行为的影响

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-27 DOI: 10.1016/j.colsurfa.2026.139730

Fatmegyul Mustan , Petar Borisov , Zlatina Mitrinova , Slavka Tcholakova

Escin is a triterpenoid saponin with one carboxyl group which is non-ionized at pH < 4.7 and becomes ionized at pH > 4.7. The major aim of the current study is to determine how the electrolyte concentration affects the properties of concentrated escin solutions (5 wt% and 10 wt%) at pHs of 4, 6, and 8. Ionized escin molecules at pH > 4.7 form charged micelles that repel one another when there is no added electrolyte and solutions remain clear and stable for more than a month. Lowering the pH to 4 leads to formation of uncharged micelles. These micelles attract each other and form inter-micellar hydrogen bonds, which enable formation of micrometer aggregates that cause turbidity and phase separation. The addition of background electrolytes to the solutions at pHs of 6 and 8 screens the electrostatic repulsion between micelles, causing partial aggregation of the micelles and gelation of solutions. As the salt concentration increases, the viscosity of the escin solution also increases, reaching a maximum—similar to the behavior observed with conventional surfactants. However, the mechanism behind this viscosity maximum is different. In solutions of conventional surfactants, the maximum is due to the formation of worm-like micelles, whereas the maximum for escin solutions is due to formation of a network of escin aggregates that imparts yield stress and elasticity to the solution. These dispersions remain stable for at least one month at room temperature and can be used as cosmetic and detergent formulations.

叶esin是一种具有一个羧基的三萜皂苷，在pH <； 4.7时不电离，在pH >； 4.7时电离。当前研究的主要目的是确定在ph值为4、6和8时，电解质浓度如何影响浓缩escin溶液（5 wt%和10 wt%）的性质。在pH >； 4.7的情况下，电离的叶香素分子形成带电的胶束，在没有添加电解质的情况下相互排斥，溶液在一个多月的时间内保持透明和稳定。将pH值降低到4会形成不带电的胶束。这些胶束相互吸引并形成胶束间的氢键，从而形成微米级的聚集体，从而导致浑浊和相分离。在ph值为6和8的溶液中加入背景电解质，屏蔽了胶束之间的静电排斥，导致胶束部分聚集和溶液凝胶化。随着盐浓度的增加，叶磷脂溶液的粘度也会增加，达到最大值，这与传统表面活性剂的行为相似。然而，这种粘度最大值背后的机制是不同的。在常规表面活性剂的溶液中，最大的是由于形成了蠕虫状胶束，而在escin溶液中，最大的是由于形成了escin聚集体网络，使溶液具有屈服应力和弹性。这些分散体在室温下保持稳定至少一个月，可以用作化妆品和洗涤剂配方。

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引用次数: 0

Preparation of a magnetic nanopartical based on amino modification and its application in removing glyceraldehyde 氨基修饰磁性纳米颗粒的制备及其在去除甘油醛中的应用

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139737

Hui Zhou , Bingxin Zhu , Shuang Liu , Qiang Fu , Jibo Zhang , Zhigang Liu , Shihua Yu

To remove a small amount of glyceraldehyde from glycerol efficiently and conveniently, a tailored magnetic nanopartical of Fe₃O₄@SiO₂-NH₂ is prepared by sol-gel and dehydration condensation methods. The structural, morphological, and magnetic properties of adsorbent have been characterized by XRD, FTIR, SEM, VSM and BET. The influence of contact time, adsorbent dosage, initial concentration and reaction temperature on the removing of glyceraldehyde have been investigated. Batch adsorption experiments indicate that the removal rate of glyceraldehyde is ∼80 %, with the initial concentration of 10 mg/L, and adsorbent dosage of 3.5 g/L at 80 ℃. Meanwhile, the adsorption process is in accordance with the pseudo-second-order adsorption kinetics and the Langmuir adsorption isotherm model. Thermodynamic data indicate that this adsorption is endothermic and non-spontaneous. Importantly, the composites can be used for glyceraldehyde removal from three glycerol products from the market, with the removal rates of 83.76 % (Reagent), 85.01 % (Quan Rui) and 82.48 % (Sinopharm), respectively. Finally, the adsorption mechanisms are explored by pH experimental evidence and XRD, FTIR analysis, which show that mainly involve hydrogen bonding, aldehyde-amine condensation reaction, and non-specific surface physical adsorption. All the results can provide new idea for improving the high value of chemical products and reducing the small amount of harmful impurities in glycerol.

为了高效方便地去除甘油中的少量甘油醛，采用溶胶-凝胶法和脱水缩合法制备了量身定制的磁性纳米颗粒Fe3O4@SiO2-NH2。采用XRD、FTIR、SEM、VSM和BET对吸附剂的结构、形貌和磁性能进行了表征。考察了接触时间、吸附剂用量、初始浓度和反应温度对脱除甘油醛的影响。批量吸附实验表明，在80℃条件下，初始浓度为10 mg/L，吸附剂用量为3.5 g/L，对甘油醛的去除率为~ 80 %。吸附过程符合拟二级吸附动力学和Langmuir吸附等温线模型。热力学数据表明，这种吸附是吸热的，非自发的。重要的是，该复合材料可用于市场上三种甘油产品的甘油醛脱除，去除率分别为83.76 %（试剂），85.01 %（泉瑞）和82.48 %（国药控股）。最后，通过pH实验证据和XRD、FTIR分析探讨了吸附机理，结果表明，吸附机理主要包括氢键反应、醛胺缩合反应和非特异性表面物理吸附。研究结果可为提高化工产品的高附加值和降低甘油中有害杂质的含量提供新的思路。

{"title":"Preparation of a magnetic nanopartical based on amino modification and its application in removing glyceraldehyde","authors":"Hui Zhou , Bingxin Zhu , Shuang Liu , Qiang Fu , Jibo Zhang , Zhigang Liu , Shihua Yu","doi":"10.1016/j.colsurfa.2026.139737","DOIUrl":"10.1016/j.colsurfa.2026.139737","url":null,"abstract":"<div><div>To remove a small amount of glyceraldehyde from glycerol efficiently and conveniently, a tailored magnetic nanopartical of Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-NH<sub>2</sub> is prepared by sol-gel and dehydration condensation methods. The structural, morphological, and magnetic properties of adsorbent have been characterized by XRD, FTIR, SEM, VSM and BET. The influence of contact time, adsorbent dosage, initial concentration and reaction temperature on the removing of glyceraldehyde have been investigated. Batch adsorption experiments indicate that the removal rate of glyceraldehyde is ∼80 %, with the initial concentration of 10 mg/L, and adsorbent dosage of 3.5 g/L at 80 ℃. Meanwhile, the adsorption process is in accordance with the pseudo-second-order adsorption kinetics and the Langmuir adsorption isotherm model. Thermodynamic data indicate that this adsorption is endothermic and non-spontaneous. Importantly, the composites can be used for glyceraldehyde removal from three glycerol products from the market, with the removal rates of 83.76 % (Reagent), 85.01 % (Quan Rui) and 82.48 % (Sinopharm), respectively. Finally, the adsorption mechanisms are explored by pH experimental evidence and XRD, FTIR analysis, which show that mainly involve hydrogen bonding, aldehyde-amine condensation reaction, and non-specific surface physical adsorption. All the results can provide new idea for improving the high value of chemical products and reducing the small amount of harmful impurities in glycerol.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139737"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076527","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}

引用次数: 0

Sodium alginate-induced interfacial assembly for constructing superhydrophilic polymer membranes with enhanced antifouling and photo-Fenton self-cleaning performance 海藻酸钠诱导的界面组装用于构建具有增强防污和光芬顿自清洁性能的超亲水性聚合物膜

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-27 DOI: 10.1016/j.colsurfa.2026.139728

Shiwei Tian , Jiayu Zhang , Yaqi Zhang , Suling Hu , Zhenzhen Guo , Mingjian Luo , Dandan Yuan , Shixuan Xin , Shan Qiu , Guoliang Mao

Membrane fouling remains a major obstacle limiting the practical application of polymer membranes in separation processes. Herein, a sodium alginate-induced stepwise interfacial assembly strategy was developed under mild aqueous conditions to impart the membrane surface with superhydrophilicity and photo-Fenton self-cleaning capability. Unlike conventional hydrothermal or vacuum-assisted self-assembly routes, this approach enables in-situ Prussian Blue (PB) growth on the alginate-functionalized surface, producing a uniform and robust functional interface. The resulting membranes exhibited superhydrophilicity in air and under-water superoleophobicity, with under-water oil contact angles above 150.3°. Under a transmembrane pressure of 0.1 MPa, the optimized membrane exhibited a high permeate flux of 3311.3 L m⁻² h⁻¹ bar⁻¹ and an oil rejection efficiency of 98.6 % during the separation of petroleum ether-in-water emulsions. Benefiting from the interfacial photo-Fenton activity of PB, the membranes effectively removed organic contaminants and restored 91.7 % of their initial flux after self-cleaning. This work demonstrates a mild and controllable interfacial assembly strategy for constructing photo-Fenton-active surfaces with integrated antifouling and self-cleaning functionalities.

膜污染仍然是限制聚合物膜在分离过程中实际应用的主要障碍。在温和的水环境下，采用海藻酸钠诱导的逐步界面组装策略，使膜表面具有超亲水性和光- fenton自清洁能力。与传统的水热或真空辅助自组装路线不同，这种方法可以在海藻酸盐功能化的表面上原位生长普鲁士蓝（PB），产生均匀而坚固的功能界面。制备的膜在空气中具有超亲水性，在水下具有超疏油性，水下油接触角大于150.3°。在0.1 MPa的跨膜压力下，优化后的膜具有3311.3 L m−2 h−1 bar−1的高渗透通量和98.6 %的脱油效率。利用PB的界面光- fenton活性，膜能有效去除有机污染物，自清洁后恢复其初始通量91.7 %。这项工作展示了一种温和和可控的界面组装策略，用于构建具有综合防污和自清洁功能的光fenton活性表面。

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引用次数: 0

Passive radiative cooling utilizing a fluorinated liquid crystal-doped polymer dispersed liquid crystal smart window 利用含氟液晶掺杂聚合物分散液晶智能窗口的被动辐射冷却

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-26 DOI: 10.1016/j.colsurfa.2026.139717

Yi-Feng Qiu , Boyu Chen , Jingjing Chen , Dongqian Xue , Xuanyi Yan , Wenhuan Yao , Ping Yu , Zemin He

Energy crises and environmental and climate challenges are becoming increasingly severe, with substantial energy consumption often being squandered on space cooling. Passive Radiative Cooling (PRC) technology can reduce energy consumption while implementing temperature management. This study prepared a series of polymer-dispersed liquid crystal (PDLC) films by introducing fluorinated liquid crystal molecules into PDLC systems. By integrating PDLC materials with PRC technology and leveraging PDLC's excellent dimming capabilities, it resolved the issues of high drive voltage and low contrast inherent in conventional PDLC. Concurrently, the incorporation of fluorinated liquid crystals endowed the PDLC with radiative cooling properties, addressing the inherent conflict in smart window PRC materials between optical performance and cooling capacity. Research findings indicate that compared to conventional PDLC, the resulting films exhibit not only low saturation voltage (<18 V) and high contrast (>70) in optoelectronic performance, but also demonstrate exceptional light modulation capabilities across the solar spectrum. Furthermore, the film exhibits high emissivity (approximately 95 %) in the atmospheric window band (8–14 μm), with a theoretical radiative cooling capacity of 109.09 W/m²/K. This capability reduces simulated indoor ambient temperature by 5.9 °C. This work confirms the application potential of fluorinated PDLC in the field of PRC smart windows.

能源危机以及环境和气候挑战日益严峻，大量能源消耗往往被浪费在空间冷却上。被动辐射冷却（PRC）技术可以在实现温度管理的同时降低能源消耗。本研究将氟化液晶分子引入聚合物分散液晶（PDLC）体系，制备了一系列聚合物分散液晶薄膜。通过将PDLC材料与PRC技术相结合，并利用PDLC出色的调光能力，解决了传统PDLC固有的高驱动电压和低对比度问题。同时，氟化液晶的加入使PDLC具有辐射冷却性能，解决了智能窗口PRC材料在光学性能和冷却能力之间的固有冲突。研究结果表明，与传统的PDLC相比，所得到的薄膜不仅具有低饱和电压（<18 V）和高对比度（>70）的光电性能，而且还具有跨太阳光谱的卓越光调制能力。此外，薄膜在大气窗口波段（8-14 μm）内具有较高的发射率（约95 %），理论辐射制冷量为109.09 W/m²/K。该功能可将模拟室内环境温度降低5.9°C。这一工作证实了氟化PDLC在PRC智能窗领域的应用潜力。

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引用次数: 0

Effects of mono/di-rhamnolipids on rice growth and rhizosphere microbes under salt stress 盐胁迫下单鼠李糖脂/双鼠李糖脂对水稻生长和根际微生物的影响

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139751

Zhen Li , Liang Sun , Shengze Su , Rui Wang , Peng Lei , Yian Gu , Yongting Song , Jian Gao , Hong Xu

Salt stress severely threatens crop production, and exploring safe and efficient salt tolerance regulation technologies is of great significance. As a typical biosurfactant, rhamnolipids (RLs) exist in two main forms (mono-RLs and di-RLs) with distinct structures, but the differences in their regulatory effects on plant salt tolerance remain unclear. In this study, a mono-RLs-producing knockout strain Pseudomonas aeruginosa ST-3ΔrhlC, and a di-RLs-inducible strain ST-3 (pJN105-rhlC) were constructed. The two types of RLs were prepared and purified, and their effects on rice seedlings under salt stress were investigated. Results indicated that 20 mg/L RLs significantly alleviated salt stress, whereas 100 mg/L RLs inhibited rice growth. Among all treatments, The optimal solution was 20 mg/L mono-RLs (Mono-20)，which increased root dry weight by 18.9 %, enhanced chlorophyll content and K⁺/Na⁺ ratio, improved antioxidant enzyme activities, and reduced membrane lipid peroxidation damage. More importantly, Mono-20 can directionally optimize the rhizosphere microbial community structure and significantly enrich beneficial bacteria. These findings confirm the effectiveness of RLs in enhancing plant salt stress tolerance and provide theoretical support for choosing appropriate RLs types in crop cultivation in saline soils.

盐胁迫严重威胁作物生产，探索安全高效的耐盐调控技术具有重要意义。鼠李糖脂（RLs）作为一种典型的生物表面活性剂，主要以单RLs和双RLs两种结构形式存在，但它们对植物耐盐性的调节作用差异尚不清楚。本研究构建了单rls产生敲除菌株铜绿假单胞菌ST-3ΔrhlC和双rls诱导菌株ST-3 （pJN105-rhlC）。制备并纯化了两种类型的RLs，并对其在盐胁迫下对水稻幼苗的影响进行了研究。结果表明，20 mg/L RLs显著缓解了盐胁迫，而100 mg/L RLs则抑制了水稻生长。在所有处理中，最优溶液为20 mg/L mono-RLs (Mono-20)，可使根干重提高18.9 %，提高叶绿素含量和K + /Na +比，提高抗氧化酶活性，减轻膜脂过氧化损伤。更重要的是，Mono-20可以定向优化根际微生物群落结构，显著丰富有益菌群。这些研究结果证实了RLs在提高植物耐盐性方面的有效性，为盐碱地作物种植选择合适的RLs类型提供了理论支持。

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引用次数: 0

Quinoline quaternary ammonium salt – KSCN synergy for non-magnetic steel corrosion inhibition in 4 % HCl/HF environments: Film densification and molecular insights 喹啉季铵盐- KSCN协同作用在4 % HCl/HF环境中对非磁性钢的缓蚀作用：膜致密化和分子洞察

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-30 DOI: 10.1016/j.colsurfa.2026.139725

Yuan Wang , Rong Wei , Bingbing Zhang , Tao Han , Miao Pan , Jun Hu , Ruidong Li

This study investigates a synergistic inhibitor system comprising QQAS and KSCN for non-magnetic steel in 4 % HCl/HF solutions. At 15 % QQAS and 1.4 % KSCN, the corrosion rate decreases from 1344.5 to 4.87 Ω·cm², achieving 99.64 % inhibition efficiency. Electrochemical analyses demonstrate that elevating KSCN concentration from 0.2 % to 1.4 % substantially enhances charge transfer resistance, indicating improved barrier properties. Surface profilometry and microscopy reveal transformation from severely pitted surfaces to shallow pits with reduced roughness, while characterization shows replacement of porous corrosion products by a compact film comprising organic species and Fe-Cr oxides. DFT calculations identify nitrogen sites as principal electron-donating centres, and MD simulations demonstrate that thiocyanate promotes dense inhibitor adsorption, increasing protective film thickness by over 40 %. Collectively, these findings confirm that the QQAS-KSCN system effectively suppresses both anodic dissolution and cathodic reactions, providing a practical strategy for protecting non-magnetic steels in aggressive acidizing environments.

研究了在4 % HCl/HF溶液中，由QQAS和KSCN组成的非磁性钢协同抑制剂体系。在15 % QQAS和1.4 % KSCN条件下，腐蚀速率从1344.5降低到4.87 Ω·cm²，缓蚀效率达到99.64 %。电化学分析表明，将KSCN浓度从0.2 %提高到1.4 %大大提高了电荷转移电阻，表明势垒性能得到改善。表面轮廓仪和显微镜显示，从严重的凹坑表面转变为粗糙度降低的浅凹坑，而表征表明，多孔腐蚀产物被由有机物质和Fe-Cr氧化物组成的致密膜所取代。DFT计算确定氮位点是主要的给电子中心，MD模拟表明硫氰酸盐促进密集抑制剂的吸附，使保护膜厚度增加40% %以上。总的来说，这些发现证实了QQAS-KSCN体系有效地抑制了阳极溶解和阴极反应，为在强酸性环境中保护非磁性钢提供了一种实用的策略。

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引用次数: 0

Magnetic field-induced photothermal particle patterning and femtosecond laser ablation for fabricating excellent anti-icing superhydrophobic surfaces 磁场诱导光热粒子图和飞秒激光烧蚀制备优异的防冰超疏水表面

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-01-30 DOI: 10.1016/j.colsurfa.2026.139794

Liang Wang , Feipeng Liu , Chaoyi Wang , Yi Rong , Yaxing Wang , Songyang Liu , Zhijun Chen , Zhenhe Yu , Jianhua Yao

Photothermal superhydrophobic surfaces present a promising energy-saving solution for anti-/de-icing applications. However, the existing methods of incorporating photothermal particles in hydrophobic surfaces to impart photothermal functionality present a challenge in balancing the hydrophobicity and photothermal properties. Excessive photothermal particles often accumulate within the structure, resulting in the partial or complete masking of the superhydrophobic structure. This study proposed magnetically inducing the direct structuring of Fe₃O₄ photothermal particles into microcones to fabricate a photothermal surface, which achieved excellent photothermal efficiency while maintaining superhydrophobicity and durability. The surfaces were prepared via a facile two-step method combining magnetic field-induced thermal curing with femtosecond laser ablation to construct hierarchical nanostructures. As a result, the surface exhibits highly efficient photothermal performance, capable of melting an ice droplet within 30 s under near-infrared laser irradiation (1 W/cm²) at −15 ℃. Simultaneously, Femtosecond laser ablation of the structure-encapsulating PDMS layer imparts superior superhydrophobicity to the coating, with a contact angle of 160.2° and a sliding angle as low as 2.5°. Furthermore, the surface demonstrates robust durability, as verified by corrosion resistance, freeze-thaw cycling, and UV aging tests. This study offers a new perspective on utilizing photothermal particles to achieve superhydrophobic anti-icing surfaces.

光热超疏水表面为防冰/除冰应用提供了一种很有前途的节能解决方案。然而，现有的将光热颗粒掺入疏水表面以赋予光热功能的方法在平衡疏水性和光热性能方面存在挑战。过量的光热粒子往往在结构内积累，导致超疏水结构部分或完全被掩盖。本研究提出用磁诱导法将Fe3O4光热颗粒直接结构成微锥状，制备光热表面，在保持超疏水性和耐久性的同时获得了优异的光热效率。采用磁场诱导热固化与飞秒激光烧蚀相结合的两步法制备表面，构建层次化纳米结构。结果表明，在- 15℃的近红外激光照射（1 W/cm²）下，该表面具有高效的光热性能，能够在30 s内融化冰滴。同时，飞秒激光烧蚀结构封装PDMS层，使涂层具有良好的超疏水性，接触角为160.2°，滑动角低至2.5°。此外，通过耐腐蚀、冻融循环和紫外线老化测试，表面显示出强大的耐久性。该研究为利用光热颗粒制备超疏水防冰表面提供了新的思路。

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