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

{"title":"Ratiometric fluorescent sensor using molecularly imprinted polymer with a metal-organic framework for the determination of propazine","authors":"Chonthicha Buachumthamrongsuk ,&nbsp;Noppanut Longnapa ,&nbsp;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 (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.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139764"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","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}

{"title":"Cu-CDs drive the formation of protein tribo-film on the porous UHMWPE to achieve auto-antifriction property in BSA solution","authors":"N.N. Zhen ,&nbsp;K.H. Chen ,&nbsp;M.T. Li ,&nbsp;F. Wen ,&nbsp;Q.Y. Deng","doi":"10.1016/j.colsurfa.2026.139724","DOIUrl":"10.1016/j.colsurfa.2026.139724","url":null,"abstract":"<div><div>Ultra-high-molecular weight polyethylene (UHMWPE) is the most widely used friction material for artificial joints. Polyethylene debris generated during its use is the main reason behind the aseptic loosening of artificial joints. Improving the wear resistance of UHMWPE and reducing debris generation have been the focus of research in this field. Inspired by the structure of natural cartilage and based on our previous research, we developed a new type of porous UHMWPE-based artificial joint material doped with copper-containing carbon dots (Cu-CDs). In a protein-containing lubricating medium, this material exhibited auto-antifriction properties by absorbing/releasing the lubricating medium and forming a protein film on the tribo-interface. These effects can significantly enhance the wear resistance of UHMWPE. The results showed that spherical Cu-CDs with an average size of 5–6 nm were successfully prepared. The tensile strength of the porous UHMWPE doped with Cu-CDs (Cu-CDs@UHMWPE) (approximately 9.93 MPa) was close to that of natural joint cartilage. Cu-CDs@UHMWPE promoted the adsorption of proteins by the friction interface and formed a protein film that reduced wear. Under the same friction conditions, the wear index of Cu-CDs@UHMWPE was approximately three times lower than that of pure UHMWPE. This study showed that UHMWPE can be imbued with the ability to form protein films to enhance wear resistance, and these findings provide experimental and theoretical evidence for the development of novel biomimetic artificial joint materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139724"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076575","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":"Highly crystalline carbon dots as dual function interfacial modifiers for defect passivation and phase stabilization in perovskite solar cells","authors":"Junjie Wang ,&nbsp;Xinxin Li ,&nbsp;Haozhi Jiao ,&nbsp;Jiansheng Yang ,&nbsp;Lingpeng Yan ,&nbsp;Changzeng Ding ,&nbsp;Yongzhen Yang ,&nbsp;Chang-Qi Ma","doi":"10.1016/j.colsurfa.2026.139722","DOIUrl":"10.1016/j.colsurfa.2026.139722","url":null,"abstract":"<div><div>Perovskite solar cells (PSCs) have achieved remarkable power conversion efficiencies, however, their operational instability originating from buried interfacial defects and phase degradation of perovskites remains a critical challenge. Although carbon dots (CDs) have been widely explored as defect passivators, their capability to regulate perovskite phase stability has rarely been explored. In this study, we report highly crystalline carbon dots enriched with amino, carboxyl, and hydroxyl groups as a dual-function interfacial modifier at the SnO₂/perovskite buried interface. Distinct from conventional amorphous CDs, the high crystallinity of these CDs enables enhanced defect-passivation capability and improved ability to suppress harmful phase transitions, thereby simultaneously passivating Pb²⁺-related defects and suppressing the detrimental α-to-δ phase transition during device operation. The multifunctional surface groups coordinate with undercoordinated Pb²⁺ and I⁻, thereby effectively inhibiting the formation of PbI₂ and the phase degradation of perovskites. Consequently, the CDs-modified perovskite films exhibit improved crystallinity, enlarged grain sizes, suppressed interfacial non-radiative recombination and enhanced interfacial charge extraction. The optimized PSCs deliver a champion power conversion efficiency of 21.50 % and retain 83 % of their initial efficiency after 1000 h of continuous illumination, significantly outperforming the control devices, which retain only 43 %. This work reveals an overlooked role of crystalline carbon dots in regulating perovskite phase stability and provides a simple, low-cost, and effective strategy for simultaneously improving the efficiency and operational stability of PSCs.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139722"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076626","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 characteristics of water-in-oil-in-water emulsions using an asymmetric straight-through microchannel array device: Effect of water-soluble and oil-soluble emulsifiers","authors":"Takashi Kuroiwa,&nbsp;Chiaki Tamai","doi":"10.1016/j.colsurfa.2026.139754","DOIUrl":"10.1016/j.colsurfa.2026.139754","url":null,"abstract":"<div><div>Water-in-oil-in-water (W/O/W) multiple emulsions were prepared using an emulsification device equipped with an asymmetric straight-through microchannel array. An oil-soluble emulsifier, polyglycerin-polycondensed ricinoleic acid ester (PGPR) was added to the oil phase (soybean oil), and water-soluble emulsifiers, sodium caseinate (SC) or Tween 80, were added to the external water phase (NaCl aqueous solution). How the concentrations of these emulsifiers affect the multiple droplet size and entrapment yield (EY) of a water-soluble fluorescent dye, calcein, were investigated. The influence of the emulsifier concentration on the droplet diameter was similar regardless of the emulsifier type: a certain concentration was required to form monodisperse multiple droplets, whereas above this concentration, no significant change in the average droplet diameter or diameter distribution was observed. By contrast, the EY strongly depended on the PGPR concentration and reached 90 % at higher PGPR concentrations (&gt;5 wt%), whereas the SC concentration had little effect. Furthermore, the stability of the droplet diameter and calcein encapsulation in the W/O/W emulsions was evaluated during storage for 4 weeks (in the dark at room temperature). Even after 4 weeks of storage, more than 50 % of the encapsulated calcein was retained in the internal water droplets, although an initial leakage occurred on the first day. These results indicate that the stability of internal water droplets, governed mainly by the PGPR concentration in the oil phase, plays a crucial role in achieving high encapsulation efficiency and storage stability in W/O/W emulsions prepared by microchannel emulsification.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139754"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170966","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":"Enhanced corrosion inhibition of esterified gallic acid on steel reinforcement: Micro/atomic interaction on interface","authors":"Weihua Li ,&nbsp;Duowen Chen ,&nbsp;Chaofan Li ,&nbsp;Mengzhu Chen ,&nbsp;Baoguo Yang ,&nbsp;Haijiao Xie ,&nbsp;Aijiu Chen ,&nbsp;Haibing Zheng","doi":"10.1016/j.colsurfa.2026.139814","DOIUrl":"10.1016/j.colsurfa.2026.139814","url":null,"abstract":"<div><div>Gallic acid-based inhibitors have attracted extensive attention as green corrosion inhibitors due to antioxidant property and strong metal chelating ability. In this work, two gallate esters—triethanolamine-gallate ester (TE-GAE) and 3-hydroxypyridine-gallate ester (3H-GAE)—were synthesized via the catalytic esterification method. Compared with gallic acid, these esterified products exhibit enhanced adsorption performance and reduced molecular acidity. From a multi-scale levels, the corrosion inhibition performance and corresponding action mechanisms of the two esters on the passive films of steel surfaces in concrete pore solution were systematically investigated. The results show that both TE-GAE (TG) and 3H-GAE (G3H) display excellent corrosion inhibition effects; after 72 h of immersion, their maximum corrosion inhibition efficiencies can reach 82 % and 79 %, respectively. Compared with the initial state of the same group of steel samples without corrosion inhibitor addition, the protective performance of their passive films is improved by up to 4 times. Unlike some heterocyclic compounds (e.g., benzimidazoles, triazoles) or alkanolamine corrosion inhibitors, gallate esters exhibit a distinct corrosion inhibition mechanism on the pre-passivated steel. They transform the loose outer layer of passive film by chelating with Fe oxides and form an organic layer by the adsorption of O and N heteroatom groups on the steel surface, contributing to the formation of a “chelate-oxide” double layered protective films. Both gallate esters and their chelates with metal ions had strong activities and a high adsorption tendency towards the surface of steel, relying on the groups containing O atoms (hydroxyl groups, ester groups, phenolic hydroxyl groups).</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139814"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185244","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":"Pyrimidyl-based multifunctional {Zn2}-coordination polymer for highly selective fluorescence sensing and efficient catalytic CO2 cycloaddition with epoxides","authors":"Qing Dong ,&nbsp;Xin Chen ,&nbsp;Yu-Jie Wang ,&nbsp;Xiao-Shuai Ma ,&nbsp;Wen-Qi Jin ,&nbsp;Huan Zhang ,&nbsp;Peng Li ,&nbsp;Wei Gao ,&nbsp;Ji-Yang Li ,&nbsp;Xiu-Mei Zhang","doi":"10.1016/j.colsurfa.2026.139921","DOIUrl":"10.1016/j.colsurfa.2026.139921","url":null,"abstract":"<div><div>Developing multifunctional coordination polymers (CPs) for fluorescence sensing and catalyzing CO₂ conversion is of great importance in protecting human health and ecological environment. Herein, a water-stable Zn-based CP [Zn(DPIA)(H₂O)₂] (Zn-CP-<strong>1</strong>) (H₂DPIA = 5-(4,6-dimethylpyrimidyl-2-yl)isophthalic acid) was synthesized under solvothermal conditions. Zn-CP-<strong>1</strong> displayed a three-dimensional (3D) supramolecular structure in which 1D chains based on the binuclear [Zn₂(COO)₄(H₂O)₂] cluster units were connected through hydrogen bonds and π-π interactions. Zn-CP-<strong>1</strong> exhibited excellent thermal stability and good solvent stability. Importantly, Zn-CP-<strong>1</strong> could be used as a multiresponsive fluorescence sensor for detecting Fe^3 + , CrO₄^2-, Cr₂O₇^2- and 2,4,6-trinitrophenol (TNP) in an aqueous medium with high selectivity and recoverability. Moreover, the fluorescence response time for all the above analytes was less than 20 s, and the limits of detection (LOD) for Fe³⁺, CrO₄^2-, Cr₂O₇^2-, and TNP were (0.072 ± 0.061), (0.41 ± 0.063), (0.43 ± 0.042), and (0.62 ± 0.031) μM, respectively. In addition, after thermal activation, the structure of the activated Zn-CP-<strong>1</strong> (Zn-CP-<strong>1a</strong>) contained plentiful Lewis acidic Zn²⁺ sites and exposed pyrimidyl Lewis basic sites, which rendered it suitable as a catalyst for the coupling reaction between CO₂ and epoxides. As expected, Zn-CP-<strong>1a</strong> exhibited remarkable catalytic activity by producing high yields of epibromohydrin carbonate ((99.9 ± 0.1)%) and styrene carbonate ((91.9 ± 0.2)%) under solvent-free and mild conditions (1 atm of CO₂, 16 h, 80 °C). Furthermore, Zn-CP-<strong>1a</strong> demonstrated excellent recyclability, maintaining its catalytic activity for up to five cycles without any significant loss. This work offers a promising approach for the preparation of multifunctional CP-based fluorescence sensors and heterogeneous catalysts.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139921"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185471","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":"Interfacial mechanisms of benzene ring substituent position effects in low-rank coal flotation","authors":"Deke Zhang ,&nbsp;Xicheng Bao ,&nbsp;Yulong Cheng ,&nbsp;Hongji Chen ,&nbsp;Yaowen Xing ,&nbsp;Xiahui Gui","doi":"10.1016/j.colsurfa.2026.139924","DOIUrl":"10.1016/j.colsurfa.2026.139924","url":null,"abstract":"<div><div>Aromatic collectors have demonstrated excellent performance in enhancing the flotation of low-rank coal (LRC). However, the effect of the substituent position on their flotation efficiency is still not clear, stemming from a poor understanding of their molecular behavior at the LRC interface. Flotation tests, density functional theory (DFT) calculations, and molecular dynamics (MD) simulations were conducted to systematically compare the ortho-, meta-, and para-substituted isomers: diethyl phthalate (DEP), diethyl isophthalate (DIP), and diethyl terephthalate (DTP). At 4000 g/t collector dosage, DIP delivers the highest combustible recovery (51.40 %) and the largest first-order rate constant (<em>k</em> = 0.90), compared with DEP (40.64 %, <em>k</em> = 0.48) and DTP (45.64 %, <em>k</em> = 0.56). DFT-derived molecular electrostatic potential calculations indicate that DIP has the lowest molecular polarity index (MPI) of the three collectors (DEP &gt; DTP &gt; DIP). This lower polarity, combined with a smaller exposed polar surface, promotes its durable adsorption on oxygen-rich LRC. Interaction Region Indicator (<em>IRI</em>) and Hirshfeld surface analyses show that interfacial contact strength correlates with the extent of hydrogen-bonding patches at the collector-coal interface. MD simulations further indicate that DIP has more stable adsorption configurations, with more favorable adsorption energies, larger collector-coal solvent-accessible surface areas (<em>SASA</em>), and lower mean-squared displacements (<em>MSD</em>). Collectively, these results establish a clear structure-performance relationship: the balanced polarity and low steric hindrance of the meta isomer yield the most robust adsorption on LRC, while the para isomer is intermediate and the ortho isomer is weakest. These insights provide a quantitative basis for rapid screening and rational design of high-efficiency collectors for enhanced coal recovery.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139924"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185469","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 synthesis of metal-complex hydrogen-bonded framework HOF-21 with excellent chloride capture capacity for corrosion protection applications","authors":"Yue Zhao ,&nbsp;Dong-Lei Wang ,&nbsp;Xin-Ya Zhou ,&nbsp;Da-Peng Wang ,&nbsp;Zhi-Yong Sun ,&nbsp;Zheng-Hui Qiu ,&nbsp;Jin-Wei Zhang ,&nbsp;Cun-Guo Lin","doi":"10.1016/j.colsurfa.2026.139941","DOIUrl":"10.1016/j.colsurfa.2026.139941","url":null,"abstract":"<div><div>This work investigates the novel application of a metal-complex hydrogen-bonded framework HOF-21 as an intelligent, chloride-responsive material for superior corrosion protection. A cost-effective and streamlined synthesis of HOF-21 was developed using rapid stirring at ambient conditions, offering a practical alternative to conventional static interfacial method. When embedded in epoxy coatings on copper substrates, HOF-21 significantly enhances anti-corrosion performance, outperforming traditional materials like ZnAl-LDHs. The protection mechanism is tripartite: effective chloride ion capture, reinforcement of the coating’s mechanical properties, and active protection. Experimental analyses, including kinetic and isotherm model fitting, confirm the exceptional chloride adsorption capacity, best described by pseudo-second-order and Temkin models. Molecular dynamics (MD) simulations elucidate the atomic-level mechanism, revealing that a unique hydrogen-bonded cage structure facilitates chloride sequestration. Furthermore, MD simulations demonstrate strong epoxy-HOF-21 compatibility and the formation of an interlocked structure that enhances mechanical cohesion. The active protection is attributed to the ion-exchange of fluorosilicate anions with chlorides. This work establishes M-HOFs as a versatile platform for chloride capture and provides a universal strategy for designing active-intelligent anticorrosion coatings.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139941"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185464","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":"Zein-based composite films containing bioactive glass for potential periodontal tissue regeneration","authors":"Ana G. Lemos ,&nbsp;Davi S.S. Souza ,&nbsp;Giovana C. Zambuzi ,&nbsp;Júlia S. Forster ,&nbsp;Brenda S. Bega ,&nbsp;Marcus V.C. Cardoso ,&nbsp;Andreia F. Faria ,&nbsp;Osvaldo de Freitas ,&nbsp;Kelly R. Francisco","doi":"10.1016/j.colsurfa.2026.139884","DOIUrl":"10.1016/j.colsurfa.2026.139884","url":null,"abstract":"<div><div>Periodontitis, a prevalent inflammatory disease, leads to destruction of periodontal ligaments and alveolar bone, requiring regenerative therapies. Bioactive glass (BG) possesses osteoinductive and antibacterial properties but is limited by brittleness. Zein and hydroxypropyl cellulose (HPC) are promising biopolymers that can enhance BG mechanical stability in composite films. However, their combined use for periodontal therapy remains underexplored. In this study, zein/HPC films containing polyethylene glycol (PEG) and BG (A-PEG-BG (4.2 % zein/1.8 % HPC) and B-PEG-BG (3.6 % zein/2.4 % HPC)) were developed via casting, aiming to enhance mechanical properties and calcium ion (Ca^2 +) release. Films were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analyses, scanning electron microscopy (SEM), tensile testing, and Ca²⁺ release in simulated body fluid. Matrix interactions with BG were confirmed by amide band shifts in FTIR, XRD validated amorphous structure and improved films thermal stability was observed due to the increase in degradation temperature. SEM micrographs showed a rough surface of B-PEG-BG film, which may be important for periodontal tissue regeneration and cell infiltration. B-PEG-BG achieved elongation at break 4.685 % and Young's modulus of 82.113 MPa, while A-PEG-BG achieved values of 6.171 % and 57.883 MPa, respectively, demonstrating preserved mechanical integrity of the films. BG-containing films exhibited controlled Ca²⁺ release with zein/HPC ratios influencing kinetics: B-PEG-BG showed faster release, while A-PEG-BG demonstrated sustained release. These findings demonstrate the potential of zein-HPC-BG films as cost-effective biomaterials for periodontal regeneration, encouraging further <em>in vivo</em> applications and clinical efficacy studies.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139884"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185432","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":"Selective ligand thermolysis for modulating hierarchical pore-defect synergistic structures in MIL-125(Ti) and enhancing visible-light photocatalytic degradation performance","authors":"Yajun Wei ,&nbsp;Xuechang Ren ,&nbsp;Jing Yu ,&nbsp;Ning Fu ,&nbsp;Miao Tian ,&nbsp;Qiongqiong Wang ,&nbsp;Gongrong Chen ,&nbsp;Huiying Lei","doi":"10.1016/j.colsurfa.2026.139820","DOIUrl":"10.1016/j.colsurfa.2026.139820","url":null,"abstract":"<div><div>Metal–organic frameworks (MOFs) are promising photocatalysts for the degradation of aqueous organic pollutants, yet Ti-MOFs such as MIL-125(Ti) still exhibit limited visible-light absorption, poor charge-carrier mobility, and insufficient accessible active sites. In this work, we introduce a selective ligand thermolysis strategy to simultaneously construct hierarchical porosity and Ti^3 + –oxygen vacancy defects within a dual-ligand MIL-125(Ti) system (BDC/NH₂-BDC). By exploiting the lower thermal stability of NH₂-BDC, controlled thermolysis at 300 °C under N₂ enables its partial removal while retaining the MIL-125(Ti) framework. The optimized sample (10NHML300) shows an increased specific surface area (from 738 to 1452 m²·g⁻¹), an enlarged total pore volume (0.775 cm³·g⁻¹), and bandgap narrowing (from 2.67 to 2.45 eV), resulting in a synergistic \"pore–defect–band\" configuration that enhances mass transport and visible-light utilization. Under visible-light irradiation, 10NHML300 exhibits a pseudo-first-order rate constant of 0.00985 min⁻¹ for RhB degradation, more than twice that of the pristine material, and completely removes 40 mg·L⁻¹ RhB within 180 min at an optimal dosage of 1.0 g·L⁻¹ . Reactive-species analysis indicates that ·O₂^- and ¹O₂ dominate the oxidation process, while ·OH and h⁺ contribute to deep mineralization through de-ethylation, chromophore cleavage, and ring-opening pathways. The catalyst also shows good cycling stability and broad applicability toward MB, TC, OFX, and phenol. In conclusion, selective ligand thermolysis enables precise coupling of hierarchical pores, defect states, and band-structure modulation, providing an effective and generalizable strategy for constructing high-performance, visible-light-responsive MOF-based photocatalysts for water purification.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139820"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185425","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}