Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Zn3In2S6/pyridine-bridged g-C3N4 S-scheme heterojunctions for high-efficiency photocatalytic H2 production and tetracycline degradation","authors":"Jing Liu ,&nbsp;Lin Liu ,&nbsp;Hongxi Zhu ,&nbsp;Youliang Shen ,&nbsp;Luliang Liao ,&nbsp;Lingfang Qiu ,&nbsp;Xun Xu ,&nbsp;Jiangbo Xi ,&nbsp;Jingjing Liu ,&nbsp;Ping Li ,&nbsp;Shuwang Duo","doi":"10.1016/j.colsurfa.2025.138572","DOIUrl":"10.1016/j.colsurfa.2025.138572","url":null,"abstract":"<div><div>The photocatalytic performance of graphitic carbon nitride (CN) is limited by electron-localized sp³-hybridized nitrogen bridges and restricted visible-light absorption. Here, we construct an S-scheme Zn₃In₂S₆/pyridine-modified CN heterojunction through a combined strategy of high-temperature calcination and in situ hydrothermal growth. The dual modification strategy—the simultaneous engineering of π-electron delocalization via pyridine bridging and the construction of S-scheme heterojunctions—results in enhanced charge separation and broadened visible-light absorption. The optimized composite photocatalyst achieves 91 % tetracycline (TC) degradation within 120 min with concurrent H₂ production at a rate of 30.3 mmol·g^–1 over 6 h, showing 3.71-fold and 33.70-fold enhancements over pristine g-C₃N₄, respectively. Notably, the photocatalyst also exhibits exceptional stability, maintaining 97.8 % of its degradation efficiency and 86.5 % of its H₂ evolution activity after four cycles. The mechanisms of charge transfer and the dynamics of charge migration were investigated through a combination of in situ XPS, ESR spectroscopy, DFT modeling, and fs-TAS. Molecular transformation pathways were mapped using HRMS, and the potential toxicity of intermediates along these pathways was estimated with T.E.S.T. software. This research offers a strategic framework for developing multifunctional photocatalytic systems but also provides deep insights into the structure-property-activity correlations by synergistically tuning π-conjugation and engineering heterojunction interfaces.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138572"},"PeriodicalIF":5.4,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264067","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}

{"title":"L-Arginine-functionalized MIL-101: Structural optimization and enhanced greenhouse gas capture","authors":"Yi Tang,&nbsp;Ning Jiang,&nbsp;Wei Xu,&nbsp;Bo Chen,&nbsp;Jian Cheng,&nbsp;Yulin Zhu,&nbsp;Chenbin Xu,&nbsp;Min Mao","doi":"10.1016/j.colsurfa.2025.138583","DOIUrl":"10.1016/j.colsurfa.2025.138583","url":null,"abstract":"<div><div>To mitigate the greenhouse effect, this study employs a hydrothermal method to synthesize a series of MIL-101 materials modified by partial substitution of H₂BDC with L-arginine (MIL-101-X%Arg, where X = 0, 9, 11, 13, 15, 17, 19) and assesses their performance in greenhouse gas capture. BET characterization and single-gas adsorption experiments reveal that MIL-101-13 %Arg is the optimal sample, with a BET surface area of 2831 m²/g, significantly higher than MIL-101-0 %Arg (1269 m²/g). The adsorption capacities for CO₂, SF₆, C₂F₆, NF₃, CF₄, CH₄ and N₂ are enhanced by approximately 54 %, 76 %, 67 %, 48 %, 37 %, 60 % and 46 %, respectively, with adsorption behavior predominantly following a monolayer model. Pore size distribution, FTIR, PXRD, SEM and TG-DSC analyses indicate that monodentate L-arginine doping disrupts the bidentate symmetry of H₂BDC, introducing localized coordination defects and active functional groups, and causing slight distortions in the crystal framework. This results in micropore splitting, changes in pore size and increased asymmetry, even forming secondary pores. These structural modifications significantly optimize the pore structure, volume and surface chemistry, while enhancing crystal morphology and maintaining good thermal stability. MIL-101-13 %Arg demonstrates excellent separation performance in dynamic binary gas separation experiments, with selectivities for SF₆/N₂, CO₂/N₂, C₂F₆/N₂, NF₃/N₂, CF₄/N₂ and CH₄/N₂ of 32.38, 27.95, 25.95, 10.37, 7.47 and 4.77, respectively, all surpassing ideal selectivity at the same pressure. These findings confirm its significant potential for greenhouse gas capture and separation, offering a solid theoretical and experimental foundation for developing efficient, cost-effective materials to address global climate change.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138583"},"PeriodicalIF":5.4,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264005","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}

{"title":"Insight into the stabilization mechanism of bacterial cellulose nanofibers/whey protein isolate complexes at the oil-water interface","authors":"Xingzhong Zhang ,&nbsp;Lin Liu ,&nbsp;Dan Wang ,&nbsp;Dong Zhang ,&nbsp;Chang Su ,&nbsp;Hai Chi ,&nbsp;Hongrui Chen ,&nbsp;Jie Tang","doi":"10.1016/j.colsurfa.2025.138562","DOIUrl":"10.1016/j.colsurfa.2025.138562","url":null,"abstract":"<div><div>In this work, O/W Pickering emulsions stabilized by bacterial cellulose nanofibers (BCNFs) and whey protein isolate (WPI) electrostatic complexes were fabricated, and their stabilization mechanisms were investigated. The BCNFs/WPI complex particles were successfully formed at pH 3.0 under electrostatic and hydrogen-bonding interactions, and showed a “dot-line” network structure. The resultant Pickering emulsions progressively exhibited more uniform droplets size (approximately 15 μm), higher viscosity and viscoelastic moduli, increased interfacial protein adsorption, and reduced flocculation index with increasing BCNFs-to-WPI ratios, especially at a ratio of 1:5. The synergistic stabilization mechanism could be summarized as follows: Negative-charged BCNFs and positive-charged WPI formed electrostatic complexes that self-assembled into compact interfacial layers and entangled networks, preventing oil droplets flocculation or coalescence. Simultaneously, a moderate amount of BCNFs effectively enhanced the emulsions stability via fortified steric hindrance and bridging flocculation. This study builds a theoretical framework for constructing Pickering emulsions stabilized by protein-polysaccharide complexes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138562"},"PeriodicalIF":5.4,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264058","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}

{"title":"Modulating Ni d-band center via Ce incorporation for enhanced H2 evolution in seawater electrolysis","authors":"Kuo Wei ,&nbsp;Jinde Li ,&nbsp;Lu Zhou ,&nbsp;Jiahao Ding ,&nbsp;Xinyi Fu ,&nbsp;Mengdi Li ,&nbsp;Feng Chen ,&nbsp;Jingwen Tian ,&nbsp;Yuanzhe Wang ,&nbsp;Faming Gao","doi":"10.1016/j.colsurfa.2025.138573","DOIUrl":"10.1016/j.colsurfa.2025.138573","url":null,"abstract":"<div><div>The main reasons restricting the development of H₂ production through alkaline seawater splitting are the collapse of catalyst structures caused by seawater corrosion and the strong adsorption energy barrier for H* that exists on a nickel surface. In order to boost the activity and stability of catalysts during the alkaline seawater electrolysis process, this research employs a synergistic strategy combining Ce regulation and P coordination to develop a novel Ce,Ni-P@NF material. Herein, addition of the Ce reconfigured the electronic structure around Ni, and the XPS valence band spectroscopy confirmed that the d-band center (ε_d) of nickel shifted downward, thus optimizing the adsorption strength of H*. Density functional theory (DFT) calculations further indicate that the adsorption of H* on the Ce,Ni-P@NF surface have an optimum Gibbs free energy (ΔG_H*). Moreover, the introduction of Ce enhances the hybridization degree of P and Ni, improving the HER catalytic efficiency. Additionally, the <em>in-situ</em> attenuated total reflection surface enhanced infrared absorption spectroscopy (ATR-SEIRAS) indicates that the addition of Ce enhances the ordering of water molecules at the material interface. It facilitates water to be easily adsorbed and dissociated on the surface of Ce,Ni-P@NF, thereby accelerating the generation of H₂. In alkaline seawater, the anion exchange membrane water electrolyzer (AEMWE) with Ce,Ni-P@NF as the cathode can operate stably for more than 120 h without any change in morphology. This paper provides a new idea for designing seawater electrolysis catalysts with resistance to chloride ion corrosion and high activity, which promotes the practical application of green H₂ production on a large scale.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138573"},"PeriodicalIF":5.4,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264177","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}

{"title":"The photothermal catalysis of the CO2 multicarbon conversion mechanism and dual interface-metal modulation of Cu-ZnO/SrTiO3 materials","authors":"Zhiqiang Sun ,&nbsp;Shuangjiao Li ,&nbsp;Yishun Du ,&nbsp;Xiaohu Wu ,&nbsp;Hongmei Ma ,&nbsp;Haijuan Zhan ,&nbsp;Shengping Wang","doi":"10.1016/j.colsurfa.2025.138560","DOIUrl":"10.1016/j.colsurfa.2025.138560","url":null,"abstract":"<div><div>Under photothermal conditions, the efficient conversion of CO₂ into high energy density and high value-added multi-carbon products (C2+) has become a major challenge due to the high energy barrier that needs to be broken through in the C-C coupling process, the low efficiency of electron transfer and the instability of the reaction intermediate. In this paper, an interfacial-metal dual modulation strategy is proposed for the modulation of Cu-ZnO/SrTiO₃ photothermal catalytic materials constructed with strong interfacial effects, and the prepared catalysts exhibit a C₂H₆ production rate of 1.55 mmol·g⁻¹·h⁻¹ during photothermal-catalyzed CO₂ conversion, and the activity is still kept after 50 h of continuous operation. The results showed that the co-modulation between the interface and the metal co-catalysts enhanced the electronic interactions between the metal oxides and the carriers and formed interfacial states at the interface, thus effectively modulating the energy band structure of SrTiO₃, and the band gap value of the catalysts was significantly reduced. Meanwhile, the separation efficiency of photogenerated electron-hole pairs and the directional migration of multiple electrons of the catalysts were significantly improved. In addition, tests such as CO₂-TPD and in situ infrared confirmed that more active sites were provided for the catalysts, and the energy barrier of C-C coupling was lowered by this effective dual modulation, which was favorable for the photothermal catalysis of CO₂ reduction toward the multicarbon direction. The present study provides new ideas for realizing how to convert CO₂ into multicarbon products more efficiently in a photothermal catalysis system and the rational design of catalysts.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138560"},"PeriodicalIF":5.4,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264090","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}

{"title":"Rapid tetracycline degradation driven by hydrophilic sodium alginate/bacterial cellulose aerogel anchored MIL-100","authors":"Ning Li,&nbsp;Xianrui Jiang,&nbsp;Tianlang Wang,&nbsp;Hongliang Han,&nbsp;Zhanfang Ma","doi":"10.1016/j.colsurfa.2025.138559","DOIUrl":"10.1016/j.colsurfa.2025.138559","url":null,"abstract":"<div><div>Powdered iron-based metal-organic frameworks (Fe-MOFs) face challenges in water treatment, specifically poor recyclability and easy agglomeration. To overcome these issues, sodium alginate (SA) and bacterial cellulose (BC) were utilized to form a composite hydrogel, and SA/BC@MIL-100 was prepared via an in-situ growth method for the rapid degradation of tetracycline (TC). The porous structure of SA/BC aerogel not only provides support for the loading of MIL-100 but also facilitates the enrichment of TC. The composite material fixes MIL-100 on the gel framework, which not only solves the problems of easy agglomeration and difficult recovery of powdered MOFs but also promotes the contact between pollutants and catalytic sites, thereby contributing to the rapid degradation of pollutants. The SA/BC@MIL-100/H₂O₂ system exhibits excellent catalytic kinetics for TC degradation, with a pseudo-first-order reaction rate constant of 0.06252 min⁻¹, markedly higher than the 0.04058 min⁻¹ observed for standalone MIL-100. The reaction system features broad pH tolerance (pH=4–10), superb anion resistance, and enhanced recyclability. This study provides a new approach for efficient removal of TC and addresses the limitations of traditional Fe-based MOFs in practical applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138559"},"PeriodicalIF":5.4,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264063","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}

{"title":"Near-infrared PS-SiNCs/PDMS nanocomposite inks and their anti-counterfeiting applications","authors":"Jiajia Kong ,&nbsp;Yanqing Liu ,&nbsp;Lejie Wang ,&nbsp;Jin Yang ,&nbsp;Jipeng Men ,&nbsp;Dongzhi Chen","doi":"10.1016/j.colsurfa.2025.138561","DOIUrl":"10.1016/j.colsurfa.2025.138561","url":null,"abstract":"<div><div>Silicon nanocrystals (SiNCs) have triggered tremendous attention both in academia and industry due to their size-tunable optical properties, exceptional biocompatibility and environmental benignity. However, their less than 10 % synthetic yield and high reactive surface severely impede practical applications. Herein, we propose a strategy for gram-scalable preparation of polystyrene-capped SiNCs (PS-SiNCs) by an AIBN-initiated thermal hydrosilylation. The resulting PS-SiNCs exhibit a near-infrared emission centered at 838 nm with an absolute quantum yield of 13.28 %, and exceptional environmental stability even after storage for 180 days under ambient conditions. Subsequently, a novel nanocomposite ink is developed by incorporating the PS-SiNCs into a polydimethylsiloxane (PDMS) matrix reinforced with vinyl-terminated MQ silicone resin. Both printability and practicability of the PS-SiNCs/PDMS nanocomposite ink are examined on flexible substrates including cotton fabric and cellulose paper through screen-printed technique. Interestingly, the customized labels exhibit distinguishable and full patterns with NIR-I fluorescence under 365 nm UV lamp, demonstrating a promising anti-counterfeiting application. Notably, these screen-printed patterns show unprecedented PL stability even after immersed in various aqueous solutions and organic solvents. This work not only presents an innovative strategy for scalable preparation of stable and eco-friendly NIR-I luminescent materials, but also pave a new way to advanced anti-counterfeiting applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138561"},"PeriodicalIF":5.4,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263994","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}

{"title":"Activation of peroxodisulfate by boron-nitrogen co-modified biochar: Synergistic effects of adsorption sites and catalytic centers","authors":"Zehui Fan ,&nbsp;Shimao Lin ,&nbsp;Shuyi Yang ,&nbsp;Xianyi Zhao ,&nbsp;Chong Peng ,&nbsp;Tao E","doi":"10.1016/j.colsurfa.2025.138558","DOIUrl":"10.1016/j.colsurfa.2025.138558","url":null,"abstract":"<div><div>The peroxodisulfate-based advance oxidation technologies (PS-AOPs) mediated by heteroatom-modified biochar demonstrates significant potential for pollutant degradation. This study successfully synthesized nitrogen-boron co-modified biochar (NB-BC) catalysts via impregnation-calcination and employed them for electrocatalytically activated PS degradation tetracycline (TC). The synergistic mechanism of this catalyst during the reaction process was systematically investigated. Experimental results reveal that the NB-BC catalyst calcined at 600 °C (NB-BC 600) exhibited superior catalytic activity within the PS activation system, achieving a degradation rate of 91.2 % for TC (10 mg/L) within 60 min, with a reaction rate of 0.0443. Combing characterization and theoretical calculations indicated that the synergistic effect of nitrogen and boron dual sites optimized the surface charge distribution of the biochar, facilitated electron transfer between the catalyst and PS, and enhanced the adsorption affinity between the catalyst and pollutants. Specifically, graphitic N accelerated electron transfer within the system and promoted the cleavage of the O-O bond in PS by modulating the surface charge of the biochar. Meanwhile, -BCO₂ groups introduced positively charged centers, thereby promoting the electrostatic adsorption process between the catalyst and TC molecules. This study provides a novel theoretical foundation and methodological guidance for leveraging heteroatom-modified biochar to enhance PS activation processes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138558"},"PeriodicalIF":5.4,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264176","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}

{"title":"Multifunctional lyocell fibers prepared by in-situ incorporation of nano-SiO2 via dope addition","authors":"Wenli Gu,&nbsp;Mengtian Kou,&nbsp;Jinping Li,&nbsp;Yue Zhang,&nbsp;Yumei Zhang","doi":"10.1016/j.colsurfa.2025.138557","DOIUrl":"10.1016/j.colsurfa.2025.138557","url":null,"abstract":"<div><div>This study presents a simple and effective strategy for fabricating multifunctional Lyocell fibers by dope addition of nano-SiO₂. Molecular simulations and experimental analyses indicated SiO₂ has little effect on the stability of N-methylmorpholine N-oxide (NMMO) solvent and Lyocell dope, supporting smooth spinning. Therefore, Lyocell-SiO₂ composite fibers containing up to 10 wt% nano-SiO₂ were prepared via dry-jet wet spinning. By the high-shear effect of nozzle, the Segre-Silberberg effect drives nano-SiO₂ migration toward the fiber surface, thereby enhancing its surface functionality. The results demonstrated that the introduction of 10 wt% nano-SiO₂ significantly enhanced multiple performance attributes of Lyocell fibers: flame retardancy was improved, with the limiting oxygen index (LOI) increasing from 19 % to 25 %; ultraviolet resistance and light-shielding properties was strengthened, as indicated by a ultraviolet protection factor value rising to 60; no fibrillation was observed after 30 min of ultrasound; and metal ion adsorption capacity was augmented. This work provides valuable insights into the development of functional Lyocell fibers using dope addition and nozzle high shear method and their multifunctional applications in textiles.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138557"},"PeriodicalIF":5.4,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264174","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}

{"title":"Preparation of polyaluminum chloride by microwave hydrothermal and its composite coagulation system with chitosan for the removal of anionic dyes: Mechanism and application exploration","authors":"Guopeng Zhu ,&nbsp;Juan Luo ,&nbsp;Qiya Zhou ,&nbsp;Yaqin Dai ,&nbsp;Bing Bai ,&nbsp;Yang Zhou ,&nbsp;Jing Feng ,&nbsp;Shichang Sun ,&nbsp;Huide Fu","doi":"10.1016/j.colsurfa.2025.138556","DOIUrl":"10.1016/j.colsurfa.2025.138556","url":null,"abstract":"<div><div>Polyaluminum chloride (PAC), as a typical inorganic flocculant for the treatment of anionic dye wastewater, was often constrained by drawbacks such as the long preparation period of the traditional alkali-addition method and the excessive residual Al concentration in the treated water. This study adopted microwave hydrothermal technology to efficiently prepare PAC with a high content of Al_b within 10 min, and deeply combined it with chitosan (CTS) to construct a PAC-CTS composite coagulation system, in order to simultaneously improve flocculation efficiency and reduce the risk of residual Al. Experiments demonstrated that the PAC-CTS composite flocculant demonstrated significant flocculation performance enhancement compared to PAC alone. Response surface experiments indicated that the PAC-CTS composite flocculant demonstrated particularly outstanding dye removal performance under acidic conditions, achieving a dye removal rate of up to 99.05 % under optimal flocculation process conditions. Additionally, a comprehensive analysis was conducted on the cost-effectiveness of the PAC-CTS composite coagulation system and on its coagulation efficiency under different scenarios. The results showed that it had good application prospects in practical wastewater treatment. Mechanistic analysis revealed that the main mechanism of action of the coagulation system for the removal of anionic dyes was charge neutralization-hydrogen bonding synergy. In summary, this study designed a new and efficient method for the synthesis of PAC, and provided a solution for the treatment of anionic dye wastewater with high efficiency and environmental friendliness.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138556"},"PeriodicalIF":5.4,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264170","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}