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

{"title":"Solar light induced tetracycline hydrochloride elimination over La2S3-CoIn2S4/NH2-functionalized polyacrylonitrile nanofibers","authors":"Xiaogang Zheng ,&nbsp;Chaoqun Ji ,&nbsp;Hao Peng ,&nbsp;Lichun Dong","doi":"10.1016/j.colsurfa.2025.137738","DOIUrl":"10.1016/j.colsurfa.2025.137738","url":null,"abstract":"<div><div>La₂S₃ and CoIn₂S₄ were in-situ grown on the surface of NH₂-functionalized polyacrylonitrile (PAN) nanofibers to form Z-scheme La₂S₃-CoIn₂S₄/NH₂-PAN heterojunction for boosting solar light driven photodegradation of tetracycline hydrochloride (TCH). Z-scheme junction between La₂S₃ and CoIn₂S₄ was favorable for facilitating the separation and migration of e^-/h⁺ pairs, meanwhile S defects and -NH₂ groups served as the vacant sites of TCH adsorption and photon capture. In addition, <strong>·</strong>O₂^- was the vital radical for the conversion of TCH to the harmless species and small molecules. The adsorption-photocatalytic capacity of La₂S₃-CoIn₂S₄/NH₂-PAN was greatly affected by La₂S₃ content, pH, and inorganic salts. La₂S₃-CoIn₂S₄/NH₂-PAN nanofibers exhibited the better adsorption-photocatalytic activity than La₂S₃-CoIn₂S₄/PAN, La₂S₃/NH₂-PAN, and CoIn₂S₄/NH₂-PAN for TCH elimination. The removal efficiency of TCH over optimal 3-La₂S₃-CoIn₂S₄/PAN with a nominal La₂S₃ content of 16 wt% was 98.32 % within 120 min, while declined to 89.01 % after five cycles due to the change in the valance states of surface components and metal leaching under the long-time irradiation.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137738"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665784","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":"Turning support of MnO-N/C catalysts enhances generation of nonradicals in peroxymonosulfate activation","authors":"Xiang Li ,&nbsp;Danwen Guo ,&nbsp;Shanying He ,&nbsp;Jiahao Kang ,&nbsp;Yijuan Zhao ,&nbsp;Shaohua Wu ,&nbsp;Chunping Yang","doi":"10.1016/j.colsurfa.2025.137759","DOIUrl":"10.1016/j.colsurfa.2025.137759","url":null,"abstract":"<div><div>Peroxymonosulfate-based advanced oxidation processes (PMS-based AOPs) via nonradical pathways have attracted close attention due to their excellent anti-interference properties and high selectivity in degrading organic pollutants from wastewater. However, the highly efficient production of nonradicals for PMS activation remains challenging, especially for recalcitrant organic pollutants such as tetracycline (TC) in complex aqueous matrices. Here, MnO and nitrogen-doped carbon catalysts were synthesized using NH₄Cl modified strategy. The performances and mechanisms of TC degradation were evaluated, and toxicity of the system was also assessed. Results showed that the system achieved 86.7 % removal of TC within 30 min with a rate constant of 0.1713 min⁻¹. This system demonstrated effective TC degradation across a broad pH range (3.0–10.5) while exhibiting resistance to diverse anionic interferences in aqueous matrices. Characterization data showed that NH₄Cl calcination led to a hierarchical porous structure with optimized MnO dispersion and nitrogen functionality in the carbon support, further significantly enhancing nonradicals generation through PMS activation. The key active sites were identified as Mn-N_X sites, graphitic nitrogen, and C-O/C-N groups. Quenching experiments and ESR tests indicated that electron transfer and Mn(V) played the major role in TC degradation, followed by singlet oxygen (¹O₂). Based on LC-MS analysis of intermediates, three primary TC degradation pathways were identified: hydroxylation-driven ring-opening, oxidative demethylation/deamination, and oxidative ketonization. Toxicity assessment via the Toxicity Estimation Software Tool confirmed a significant reduction in ecotoxicity throughout these pathways. These data could be referred for the optimization of PMS-based AOPs in wastewater treatment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137759"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665783","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":"Pressurized carbon dioxide-assisted hydrophobic modification of silica aerogel to reduce thermal conductivity","authors":"Hongkai Zhao ,&nbsp;Xuan Zhao ,&nbsp;Zhaotao Sun ,&nbsp;Baoxiu Zhao ,&nbsp;Songxue Wang ,&nbsp;Shunyu Cui ,&nbsp;Lei Chen","doi":"10.1016/j.colsurfa.2025.137755","DOIUrl":"10.1016/j.colsurfa.2025.137755","url":null,"abstract":"<div><div>This study proposed a method employing pressurized carbon dioxide (CO₂) to improve the hydrophobicity of silica aerogel. The effects of aging time, reaction temperature, and reaction time on the extent of hydrophobic modification were investigated systematically using scanning electron microscopy, water contact angle measurements, Fourier transform infrared analyses, thermogravimetric analyses, and thermal conductivity measurements. The results indicated that the use of CO₂ pressurization significantly promoted the hydrolysis of hexamethyldisilazane (HMDS) and participated in the hydrophobic modification of the aerogel, enhancing the substitution of Si-OH on the aerogel surface with Si-CH₃ to provide excellent thermal stability. Under the optimal reaction conditions, the water contact angle, specific surface area, and average pore diameter of the silica aerogel reached 150.76°, 645.95 m²/g, and 18.07 nm, respectively. Furthermore, an electrostatic potential analysis confirmed that (CH₃)₃Si-OH generated by the pressurized CO₂-promoted hydrolysis of HMDS exhibited highly nucleophilic and electrophilic sites, making it more susceptible to substitution reactions with <img>Si-OH. Critically, the use of CO₂ pressurization helped to discharge the water inside the silica aerogel, thereby reducing the capillary force and drying stress while improving the skeletal structure to obtain an aerogel with excellent hydrophobic properties and a spatial structure that considerably reduced its thermal conductivity. Therefore, this study demonstrated a new approach for the preparation of hydrophobic silica aerogels with low thermal conductivity.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137755"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654499","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":"Mussel-inspired “built-up” surface chemistry coating on polyetheretherketone enhances osteogenic, angiogenic, and antibacterial properties for improved osseointegration","authors":"Lvhua Liu ,&nbsp;Yongheng Zhang ,&nbsp;Mengqi Li ,&nbsp;Mingyuan Yang ,&nbsp;Liping Zhou ,&nbsp;Caiwei Zeng ,&nbsp;Huang Zhou ,&nbsp;Xiaoyu Zheng ,&nbsp;Penghui Li ,&nbsp;Huaiyu Wang ,&nbsp;Yanyan Zheng","doi":"10.1016/j.colsurfa.2025.137760","DOIUrl":"10.1016/j.colsurfa.2025.137760","url":null,"abstract":"<div><div>Osteogenesis, angiogenesis, and antibacterial activity are essential for the long-term success of dental and orthopedic implants. Polyetheretherketone (PEEK) has been widely utilized in dental and orthopedic implants; however, its clinical applications are impeded by the deficiencies in osteogenic and angiogenic capacities, as well as the absence of antibacterial properties. To address these limitations, a novel mussel-inspired “built-up” surface chemistry strategy is proposed. The “built-up” surface chemistry coating is constructed on PEEK by sequential heaping of a copper-dopamine network basement and a polydopamine (PDA) layer facilitating the secondary grafting of osteogenic growth peptide (OGP). The results demonstrate that the “built-up” surface chemistry coating functionalized PEEK exhibits a controlled and long-term release of Cu^2 + , imparting PEEK with improved angiogenic ability and enhanced antibacterial activity towards <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>. The outer layer grafted OGP potentiates the osteogenic capability of pre-osteoblasts in terms of cell adhesion, spreading, proliferation, alkaline phosphatase activity (ALP), collagen secretion, extracellular matrix mineralization (ECM), as well as osteogenesis-marked genes expressions. With the synergistic effects of Cu²⁺ and OGP, the functionalized PEEK surfaces exhibit superior antibacterial properties and enhanced osteogenic and angiogenic activity, thereby impressively promoting bone regeneration and facilitating bone implant integration <em>in vivo</em>. The mussel-inspired “built-up” surface chemistry strategy provides new perspectives on the design of novel multifunctional surfaces for dental and orthopedic implants.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137760"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654550","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":"NaCl-templated hierarchical porous carbons enhanced removal of tetracycline and ciprofloxacin: Mechanistic insights from site energy distribution and competitive adsorption","authors":"Ruike Gao ,&nbsp;Rong Wang ,&nbsp;Yu Wang ,&nbsp;Xinyu Liu ,&nbsp;Xianning Zheng ,&nbsp;Xiaoyu Liu ,&nbsp;Jiyue Ding ,&nbsp;Shuhan Song ,&nbsp;Zequn Ma ,&nbsp;Qian Zhang ,&nbsp;Zilin Meng","doi":"10.1016/j.colsurfa.2025.137758","DOIUrl":"10.1016/j.colsurfa.2025.137758","url":null,"abstract":"<div><div>In this study, hollow spherical NaCl was successfully synthesized via crystal growth inhibition technology. Porous carbons were prepared using hollow spherical NaCl templates with varying dosages, and their adsorption capacities for tetracycline (TC) and ciprofloxacin (CIP) were systematically investigated. The microscopic morphology and specific surface area of the samples were thoroughly characterized using SEM and BET analysis. Kinetic analysis revealed that the adsorption processes of TC and CIP by the porous carbon conformed to pseudo-second-order kinetic and intraparticle diffusion models, indicating that the active site was the main factor affecting the adsorption process. Isothermal adsorption studies demonstrated that the Generalized Langmuir model provided a more accurate description of the adsorption behavior compared to the Langmuir model, indicating monolayer adsorption occurring at heterogeneous adsorption sites. Among the synthesized porous carbons, MCS-3 exhibited optimal adsorption performance, achieving adsorption capacities of 404 mg/g for TC and 268 mg/g for CIP. Site energy distribution analysis further confirmed that the adsorption sites on MCS-3 possessed a higher density of adsorption sites and elevated average site energy. Competitive adsorption experiments revealed stronger adsorption affinity of MCS-3 toward TC over CIP. XPS revealed the adsorption mechanism, and the results indicated that the adsorption between the porous carbon and TC/CIP mainly occurred through the synergistic effect of Lewis acid-base interactions and the hydrogen bonding network. Investigation of pH effects indicated that pH modulated adsorption efficiency by altering the surface charge of the porous carbon and the ionization states of TC/CIP. Recycling experiments demonstrated that MCS-3 maintained stable adsorption performance over five cycles, highlighting its excellent recyclability. These findings collectively provide a critical theoretical foundation and practical guidance for the application of porous carbon in the remediation of TC/CIP-contaminated systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137758"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654498","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":"Comprehensive study on the physical and electrochemical behavior of Mn₀.₄Mg₀.₆Fe₂O₄/CeO₂/MnFe₂O₄ nanocomposite for energy storage applications","authors":"Ala Manohar ,&nbsp;Thirukachhi Suvarna ,&nbsp;S.V. Prabhakar Vattikuti ,&nbsp;Amjad A. Almunyif ,&nbsp;Sambasivam Sangaraju ,&nbsp;Ki Hyeon Kim","doi":"10.1016/j.colsurfa.2025.137748","DOIUrl":"10.1016/j.colsurfa.2025.137748","url":null,"abstract":"<div><div>A novel Mn₀.₄Mg₀.₆Fe₂O₄/CeO₂/MnFe₂O₄ nanocomposite was created and thoroughly examined for its structural, morphological, chemical, and electrochemical attributes, particularly for energy storage applications. XRD analysis confirms the coexistence of CeO₂, MnFe₂O₄, and MgFe₂O₄ crystalline phases, indicating the formation of a well-integrated multiphase composite. Electron microscopy (FESEM and TEM) reveals agglomerated, irregularly shaped nanoparticles with an average size of 13–14 nm, while EDS and elemental mapping confirm the uniform distribution of Mg, Mn, Ce, Fe, and O within the structure. Zeta potential measurements (∼ –22.7 mV) suggest good colloidal stability, and DLS analysis indicates the presence of larger particle agglomerates. XPS analysis identifies the constituent elements and confirms the presence of multiple oxidation states (Mn²⁺/Mn³⁺, Ce³⁺/Ce⁴⁺, Fe²⁺/Fe³⁺), pointing to the redox-active nature of the material. EPR spectroscopy shows a resonance signal with a g-factor of 2.48, indicating the presence of unpaired electrons typical of transition metal ions. Electrochemical characterization via cyclic voltammetry (CV) demonstrates pronounced pseudocapacitive behavior driven by surface redox reactions, while galvanostatic charge-discharge (GCD) profiles exhibit near-ideal triangular shapes and minimal internal resistance, reflecting good rate capability and efficient charge storage. These findings underscore the material's potential as a promising candidate for high-performance supercapacitor electrodes, offering a balance between energy and power density through its synergistic multi-phase composition and favorable electrochemical response.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137748"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678752","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 MnO2-based nanoplatforms for mitigation of hypoxia and achieving self-enhanced diagnosis and treatment of liver cancer","authors":"Bang-Bang Liu ,&nbsp;Xue-Jie Zhao ,&nbsp;Lin-Song Li ,&nbsp;Peng-Wei Chen ,&nbsp;Dong Cheng ,&nbsp;Wen-Qi Zhu ,&nbsp;Wenhao Zhang ,&nbsp;Peng Yuan ,&nbsp;Mei-Xia Zhao","doi":"10.1016/j.colsurfa.2025.137757","DOIUrl":"10.1016/j.colsurfa.2025.137757","url":null,"abstract":"<div><div>In solid tumors, chronic lack of blood and oxygen (O₂) causes hypoxia, which diminishes tumor cell sensitivity and contributes to unfavorable outcomes. To address this issue, we synthesized manganese dioxide MnO₂ on gold nanorods (GNR), a system designed to undergo straightforward degradation within the tumor microenvironment (TME). The nano platform facilitates the controlled release of drugs within the TME and mitigates hypoxia to enhance photodynamic therapy for hepatocellular carcinoma. The unique mesoporous structure of the nanoplatforms allows for the loading of indocyanine green (ICG) and Doxorubicin (DOX), which serve as near-infrared (NIR)-mediated photodynamic reagents. When applied to hepatocellular carcinoma, MnO₂ rapidly degrades within the TME, efficiently releasing DOX and ICG. Additionally, the agent induces the decomposition of endogenous hydrogen peroxide abundant in hepatocellular carcinoma, thereby facilitating highly efficient chemo/photothermal/photodynamic therapy.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137757"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662338","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":"Hierarchical CuO@Ni/NiO nanoarchitectures with dual synergistic effects for industrial high-current-density hydrogen evolution","authors":"Feng Chen ,&nbsp;Junshuang Zhou ,&nbsp;Wenfeng Peng ,&nbsp;Xiaowen Feng ,&nbsp;Zikang Zhao ,&nbsp;Yubin Yuan ,&nbsp;Tianshuo Wang ,&nbsp;Faming Gao","doi":"10.1016/j.colsurfa.2025.137744","DOIUrl":"10.1016/j.colsurfa.2025.137744","url":null,"abstract":"<div><div>The development of efficient and durable non-precious metal catalysts for hydrogen evolution reaction (HER) remains a significant challenge. In this work, we present a novel approach combining heterojunction and structural engineering to enhance HER performance. A NiO/Ni layer with a heterogeneous structure is grown on CuO nanorod arrays supported by copper foam. This 3D nanostructure increases the density of active sites, improves mass and electron transport, and accelerates HER kinetics. The rough surface also facilitates rapid bubble release, enhancing catalyst stability under high currents. As a result, the CuO@NiO/Ni catalyst exhibits excellent HER performance, with overpotentials of 86.5 and 198.8 mV at 100 and 500 mA cm⁻², respectively. Additionally, a two-electrode electrolytic cell using CuO@NiO/Ni and NiFe LDH achieves 500 mA cm⁻² at only 1.64 V and maintains excellent stability over 100 h. These findings highlight the potential of CuO@NiO/Ni as a highly efficient, stable catalyst for industrial-scale water electrolysis, and provide a promising approach to addressing the challenges of non-precious metal-based HER catalysts in industrial settings.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137744"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678754","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 adsorption-photocatalytic cooperative mechanism for efficient degradation of methylene blue by SDBS modified ZnTi-LDH","authors":"Xiangtai Zhang ,&nbsp;Tao Feng ,&nbsp;Si Wu ,&nbsp;Tingpeng Chen ,&nbsp;Yuqi Tang","doi":"10.1016/j.colsurfa.2025.137736","DOIUrl":"10.1016/j.colsurfa.2025.137736","url":null,"abstract":"<div><div>With the development of global industry, the treatment technology of water pollutants has become increasingly important. In this paper, ZnTi-LDH photocatalysts with synergistic effects of adsorption and photocatalysis were synthesized by a simple hydrothermal method and applied to the removal of methylene blue (MB) from water. The synthesized ZnTi-LDH with sodium dodecyl benzene sulfonate (SDBS) modification (ZT-0.4) had improved adsorption and photocatalysis properties, thus greatly enhancing the removal rate of MB. ZT-0.4 was able to remove 98.1 % of MB in the static system and stabilized to remove about 76 % of MB in the dynamic system, both of which were substantially improved compared to unmodified ZnTi-LDH. Zeta potential analysis and Electrochemical tests indicated that the addition of SDBS enhanced the electrostatic adsorption capacity of ZnTi-LDH on MB, shortened the carrier transport path, and increased the electron-hole pair separation efficiency, which substantially improved the pollutant removal rate. The photocatalytic activity of ZT-0.4 remained a MB removal efficiency of 71.3 % after five consecutive cycles. ZT-0.4 also demonstrated enhanced removal rates for other dyes such as Rhodamine B (94.4 %) and Congo Red (100 %). Quenching experiment and electron paramagnetic resonance (EPR) indicate that ·OH, ¹O₂ and ·O₂^- radicals are the main active substances for photocatalytic degradation. In this work, efficient and stable ZnTi-LDH photocatalytic materials were developed by constructing an adsorption-photocatalytic synergistic mechanism, which provides a novel photocatalytic material design strategy for the dynamic removal of pollutants in wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137736"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654501","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":"A novel colorimetry-enhanced and UV-blocking intelligent pH indicator by incorporation of lignin nanoparticle for monitoring shrimp freshness","authors":"Jin-Ling Wu ,&nbsp;Hong-Jia Xiang ,&nbsp;Rui Zhang ,&nbsp;Cheng-Long Wang ,&nbsp;Yi-Xin Zhang ,&nbsp;Ling Xiao ,&nbsp;Zhen-Lin Xu ,&nbsp;Hong Wang ,&nbsp;Peng Wen","doi":"10.1016/j.colsurfa.2025.137770","DOIUrl":"10.1016/j.colsurfa.2025.137770","url":null,"abstract":"<div><div>The current anthocyanin-based intelligent pH indicator has poor ultraviolet (UV) blocking performance, which results in color fading and greatly limits its application in freshness monitoring. Lignin nanoparticle (LNP), with aromatic skeleton and phenolic hydroxyl groups, is a promising green alternative to reinforce UV shielding property. Herein, a colorimetry-enhanced and UV-blocking intelligent film encapsulating purple sweet potato anthocyanin (PSPA) and LNP was developed by electrospinning poly (vinyl alcohol) (PVA) and zein. The results revealed that a bead-free and continuous microstructure was obtained for the PVA/Zein/PSPA/LNP-2 film, which also achieved excellent 99.99 % UVA and UVB blocking. Light exposure experiments showed that the incorporation of LNP significantly improved the color stability of PSPA. Besides, the film demonstrated higher tensile strength (26.98 MPa) and elongation at breaks (66.06 %). Furthermore, the nanofiber structure endowed the film with sensitive color responsiveness to detect shrimp freshness with color changing from pink to blue. These results suggested the great potential of developed nanofilm as an intelligent indicator.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"726 ","pages":"Article 137770"},"PeriodicalIF":4.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662342","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}