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

{"title":"Facile fabrication of a ternary drug-carrying polymeric composite coatings with enhanced interface compatibility and mechanical properties by suspension flame spray","authors":"Decong Kong ,&nbsp;Meiqi Song ,&nbsp;Yonghong Pan ,&nbsp;Xierzhati Aimaier ,&nbsp;Ye Tian ,&nbsp;Rui Yang ,&nbsp;Jing Huang ,&nbsp;Yi Liu ,&nbsp;Xiaomei Liu ,&nbsp;Nikolai Boshkov ,&nbsp;Botao Zhang ,&nbsp;Hua Li","doi":"10.1016/j.colsurfa.2025.137073","DOIUrl":"10.1016/j.colsurfa.2025.137073","url":null,"abstract":"<div><div>In this study, the interface-modified ternary blends based on polylactic acid (PLLA)-polycaprolactone (PCL)-polycarbonate diols (PCDL) were prepared via suspension flame spray. Morphological analysis showed that the interface modification of PCDL significantly improves the compatibility of PLLA and PCL. Mechanical analysis revealed that the addition of PCDL resulted in great enhancement of the toughness of the PLLA/PCL composite coatings with a dramatic 326 % increase of the fracture strain for 10PLLA/90PCL/10PCDL compared with 10PLLA/90PCL. Further physicochemical and antibacterial test revealed no significant difference among PLLA/PCL and PLLA/PCL/CAM composite coatings with and without PCDL. Time-course release analysis showed that the release mechanism of the composite coating generally remains the same when the PCDL added is lower than the main components in PLLA/PCL, and even changed from the original abnormal diffusion to Fick diffusion. Overall, the ternary blending approach of PLLA-PCL-PCDL using suspension flame spray is a promising technique with great potential drug-delivery applications with different mechanical requirements.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137073"},"PeriodicalIF":4.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887335","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":"Fabrication of a closed hollow-shell like crosslinked EPDM-containing copolymer: Highly efficient adsorption resin","authors":"Feng Zhou ,&nbsp;Yu Song ,&nbsp;Jun Tang ,&nbsp;Fuli Bian ,&nbsp;Di Zhang ,&nbsp;Xianyan Ren","doi":"10.1016/j.colsurfa.2025.137065","DOIUrl":"10.1016/j.colsurfa.2025.137065","url":null,"abstract":"<div><div>Highly efficient oil adsorption materials, combining high capacity with fast kinetics, offer a highly effective solution for chemical and oil spill remediation. In view of this, a closed hollow-shell adsorption resin (PETB) was designed and synthesized through solution polymerization of ethylene-propylene-diene monomer (EPDM), 4-tert-butylstyrene (tBS) and trimethylolpropane triacrylate (TMPTA), followed by controlled precipitation in methanol. When the monomer ratio of EPDM to tBS is 2:1 and TMPTA accounts for 7.53 % of the total monomers, the hollow-shell PETB exhibits a chloroform adsorption capacity of ∼43.21 mL/g, approximately 1.5 times higher than that of unshaped PETB resin and most reported EPDM-containing oil adsorption resins. And the hollow-shell PETB reaches adsorption equilibrium in 30–70 min depending on the oil solvents. Furthermore, the hollow-shell PETB demonstrates both high oil solvent selectivity in oil-water mixtures and exceptional oil retention (&gt;99 %), positioning it as an excellent candidate for rapid spill remediation of chemicals and oils.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137065"},"PeriodicalIF":4.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887431","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":"Controllable construction of porous high specific surface area carbon materials derived from walnut green peel for high-performance symmetric supercapacitors","authors":"Jinfeng Zheng ,&nbsp;Hao Wu ,&nbsp;Jun Zhang ,&nbsp;Jingwei Li ,&nbsp;Baopeng Ding ,&nbsp;Jianwen Hu ,&nbsp;Xiaoyang Cheng ,&nbsp;Ting Yi","doi":"10.1016/j.colsurfa.2025.137064","DOIUrl":"10.1016/j.colsurfa.2025.137064","url":null,"abstract":"<div><div>Although biomass can be used to prepare carbon materials for supercapacitors, unmodified carbon materials have lower electrochemical properties. In addition, the complexity of biomass reactions during carbonization leads to irregular changes in specific surface area and pore structure. To this end, walnut green peel was used as carbon source and KHCO₃ was used as activator to prepare porous carbon materials with high surface area, which realized the precise regulation of specific surface area and pore structure of carbon materials. With the increase of KHCO₃ mass, specific surface area and pore structure of carbon materials showed a parabolic variation law. When the mass of KHCO₃ is 3 g, the synthesized WGP-3 is located at the apex of the parabola. WGP-3 exhibits the highest specific surface area and pore volume, as well as reasonable distribution of micropores and mesoporous pores. When the mass of KHCO₃ is 2 and 4 g, the synthesized WGP-2 and WGP-4 are located at the symmetric bottom of the parabola. The two samples have similar specific surface area and pore size distribution. The electrochemical test shows that WGP-3 has the best electrochemical performance. The current density of 1 A g⁻¹ exhibits a high specific capacitance of 227 F g⁻¹. Even when the current density increases five-fold, (5 A g⁻¹), the specific capacitance remains 199.5 F g⁻¹. Although the heteroatom content of different samples is different, the electrochemical properties of WGP-2 and WGP-4 are similar, indicating that the electrochemical properties of carbon materials mainly depend on the specific surface area and pore structure. A symmetric supercapacitor (SSC) assembled with WGP-3 has an energy density of 14.8 Wh kg⁻¹ at a power density of 350 W kg⁻¹. After 10,000 cycles, the capacitance retention rate is up to 100 %, showing good application value. This study provides a new method for the controlled synthesis of porous carbon materials with high specific surface area. The revealed relationship between structure and electrochemical properties will point to new direction for the design of high-performance carbon materials, thereby realizing the high-value utilization of waste biomass.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137064"},"PeriodicalIF":4.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887258","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":"Role of cellulose, phenolic compounds, and water-soluble proteins in ZnO nanoparticle synthesis using Mangifera indica leaf extract for photocatalytic and antioxidant investigations","authors":"Munisha Mahajan ,&nbsp;Sanjeev Kumar ,&nbsp;Jyoti Gaur ,&nbsp;Sandeep Kaushal ,&nbsp;Anand Somvanshi ,&nbsp;Harpreet Kaur ,&nbsp;Gurjinder Singh ,&nbsp;Mohammad Rafe Hatshan ,&nbsp;Sunil Kumar ,&nbsp;Gurmeet Singh Lotey","doi":"10.1016/j.colsurfa.2025.137066","DOIUrl":"10.1016/j.colsurfa.2025.137066","url":null,"abstract":"<div><div>The green synthesis of zinc oxide nanoparticles (ZnO NPs) using plant-derived macromolecules offers an eco-friendly and sustainable approach to nanomaterial fabrication. In this study, <em>Mangifera indica</em> (MI) leaf extract, rich in cellulose, phenolics (mangiferin, quercetin), and water-soluble proteins, was employed as a natural reducing, capping, and stabilizing agent for the synthesis of ZnO NPs. The resulting NPs exhibited a hexagonal prism morphology, wurtzite crystal structure, and an average crystallite size of 61.5 nm. Zeta potential measurements confirmed excellent colloidal stability with a well-defined isoelectric point at pH 9.51, ensuring robust dispersion behavior. BET surface area analysis revealed a high specific surface area (125 m²/g) and mesoporous architecture, favoring enhanced adsorption and catalytic efficiency. UV-Vis spectroscopy indicated a narrowed bandgap of 2.9 eV, attributed to defect states and biomolecule interactions, facilitating improved light-harvesting ability. The photocatalytic performance of ZnO NPs was evaluated via Rhodamine B dye degradation, achieving 94 % degradation within 120 minutes under UV irradiation, following pseudo-first-order kinetics (<em>k</em> = 0.0275 min⁻¹). The mechanism, assessed through reactive species scavenging, identified hydroxyl (•OH) and superoxide (•O₂⁻) radicals as dominant oxidative agents. Additionally, ZnO NPs exhibited strong antioxidant activity, with 87.5 % DPPH radical scavenging efficiency at 12 mg/L and a total antioxidant capacity (IC₅₀ = 11.7 mg/L). These results highlight the synergistic role of bioactive macromolecules in tailoring the surface chemistry, dispersion stability, and functional performance of ZnO NPs, making them promising candidates for environmental remediation and biomedical applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"720 ","pages":"Article 137066"},"PeriodicalIF":4.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891902","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":"In situ synthesis of Bi/Bi24O31Br10 nanosheet for enhanced photocatalytic degradation of tetracycline: Kinetics, density functional theory, and toxicity studies","authors":"Weirui Chen ,&nbsp;Zhenbang Meng ,&nbsp;Kai Huang ,&nbsp;Rui Huang ,&nbsp;Han Wang ,&nbsp;Xiaofeng Liu ,&nbsp;Qi He ,&nbsp;Ri Chen ,&nbsp;Qiaoshan Chen ,&nbsp;Wenxia Wang ,&nbsp;Lihua Zhou","doi":"10.1016/j.colsurfa.2025.137074","DOIUrl":"10.1016/j.colsurfa.2025.137074","url":null,"abstract":"<div><div>Achieving highly controlled and directional electron transfer at catalyst interface remains a persistent challenge in photocatalysis. Herein, Bi/Bi₂₄O₃₁Br₁₀ nanosheets were prepared through a simple in situ reduction method to enhance the photocatalytic degradation of tetracycline (TC). Leveraging the surface plasmon resonance (SPR) effect of metallic Bi and the marked enhancement of interfacial charge transfer and separation efficiency, the optimized Bi/Bi₂₄O₃₁Br₁₀ nanosheets exhibited significantly improved TC photodegradation performance, achieving a degradation efficiency of 80.78 % within 120 min under visible light irradiation-surpassing the performance of pristine Bi₂₄O₃₁Br₁₀ nanosheets. Notably, the Bi/Bi₂₄O₃₁Br₁₀ nanosheets demonstrated robust degradation efficiency under diverse conditions, including a broad pH range (3.0–9.0), varying TC concentrations (5–25 mg L⁻¹), different photocatalyst dosages (5–20 mg), and in the presence of common inorganic anions (e.g., Cl^-, HCO₃^-, SO₄^2-, and NO₃^-). The mineralization process and degradation pathway of TC were elucidated through active sites trapping experiments, liquid chromatography-mass spectrometry (LC-MS), three-dimensional excitation-emission matrix (3D EEM) spectroscopy, and density functional theory (DFT) calculations. Additionally, the ecotoxicity of TC and its degradation intermediates was evaluated using the Toxicity Estimation Software Tool (T.E.S.T.) and the Ecological Structure Activity Relationships (ECOSAR) model, revealing a reduction in environmental toxicity during the degradation process. This study provides valuable insights into the rational design of advanced Bi-based semiconductor photocatalysts for efficient environmental remediation.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137074"},"PeriodicalIF":4.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892291","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":"Polyglyceryl-4 caprate and polyglycerol-3 provide low mobility and enhance ductility in Schizophyllum commune mycelium materials","authors":"Antonio d’Errico ,&nbsp;Christophe A. Land ,&nbsp;Maren Wissing ,&nbsp;Ruben B. Richrath ,&nbsp;Han A.B. Wösten","doi":"10.1016/j.colsurfa.2025.137055","DOIUrl":"10.1016/j.colsurfa.2025.137055","url":null,"abstract":"<div><div>Mycelium materials are an emerging class of bio-based fabrics. While the raw material typically exhibits poor elongation at break of 1–2 %, the addition of glycerol as a plasticizer can improve elongation at break up to 29.6 %. However, glycerol is prone to migration due to its small molecular size. This can cause it to move both within and outside the material, which negatively affects the mechanical properties of the material. To address this issue, films of <em>Schizophyllum commune</em> mycelium were treated with various plasticizers, including polyols, non-ionic and anionic surfactants, fatty acid esters, and polyether polyols. Among these, the biodegradable plasticizers polyglyceryl-4 caprate (PGFE-4) and polyglycerol-3 (PG-3) demonstrated the best results, either matching or surpassing glycerol in terms of elongation at break, while exhibiting less migration. The most notable improvements in elongation at break were observed with 4 % PGFE-4, 16 % PG-3, and 16 % glycerol, yielding values of 25.3 %, 24.9 %, and 17.7 %, respectively. Compared to glycerol, plasticizer migration was reduced by up to 11.5-fold with PGFE-4 and 1.8-fold with PG-3. In conclusion, PGFE-4 and PG-3 offer superior alternatives to glycerol, as they reduce migration, contributing to better material stability, and can enhance mechanical properties of the mycelium.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137055"},"PeriodicalIF":4.9,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887260","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":"Evaporation dynamics and deposition patterns of ethanol-based Al2O3 nanofluid droplets: Effects of particle sizes and substrate temperatures","authors":"Youqiang Wei ,&nbsp;Yuequn Tao ,&nbsp;Yukai Lin ,&nbsp;Yanhui Feng ,&nbsp;Fuqiang Chu","doi":"10.1016/j.colsurfa.2025.137040","DOIUrl":"10.1016/j.colsurfa.2025.137040","url":null,"abstract":"<div><div>The evaporation of nanofluid droplets holds significant potential for applications in thermal management. Nonetheless, the ways in which nanoparticles affect the evaporation dynamics and deposition properties of nanofluid droplets are still not well understood. Here, we investigate the effects of Al₂O₃ nanoparticle sizes and substrate temperatures on the wetting characteristics, evaporation rate, and particle deposition behavior of ethanol-Al₂O₃ nanofluid droplets. Additionally, the features and transitions of internal convective instabilities are observed and discussed. The results reveal that the addition of nanoparticles has a minor impact on the changes in wetting patterns during droplet evaporation, and all droplets evaporate in a mixed mode. Nanoparticle size plays a pivotal role in regulating deposition patterns and wetted area, which in turn indirectly affects the evaporation rate. Specifically, the heat flux at the solid-liquid interface and the evaporation rate are enhanced compared to the base fluid, with these differences becoming more pronounced at higher substrate temperatures and with larger nanoparticle sizes. The internal convection within the droplets is primarily driven by Marangoni flow, and the presence of nanoparticles has negligible influence on the flow behavior. Smaller nanoparticles tend to deposit near the center of the droplet, resulting in a reduced coffee-ring effect, whereas larger nanoparticles predominantly deposit at the contact line, forming a marked coffee ring. Therefore, by selecting nanoparticles of appropriate sizes, it is possible to enhance evaporation rates or mitigate the coffee-ring effect to meet the requirements of various industrial applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137040"},"PeriodicalIF":4.9,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887336","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 in situ green method for synthesizing a palladium NPs-based catalyst aimed at the selective hydrogenation of aldehydes in cinnamaldehyde","authors":"Afef Mehri ,&nbsp;Houcine Touati ,&nbsp;Khadija Kaaroud ,&nbsp;Fathi Karouia ,&nbsp;Mohamed Hassen V. Baouab","doi":"10.1016/j.colsurfa.2025.137035","DOIUrl":"10.1016/j.colsurfa.2025.137035","url":null,"abstract":"<div><div>In the first study, Palladium nanoparticles (NPs) were synthesized via wet impregnation of hybrid hydroxyapatite nanomaterials using a sodium tetrachloropalladate dihydrate (Na₂PdCl₄·2 H₂O) precursor. Citrate served as active sites to facilitate the selective and \"in situ\" reduction of palladium NPs. To investigate the role of citrate, hybrid hydroxyapatite (nCit-HAp) nanomaterials were prepared by varying the molar ratio of citrate to HAp (n = 0.2, 0.4, and 0.8). The resulting (PdNPs/nCit-Hap) catalysts were characterized using techniques such as N₂ adsorption-desorption, ICP-OES, IR-ATR, X-ray diffraction, TEM and XPS. The second study, focused on the effects of parameters like the Cit/HAp molar ratio and heat treatment on the selective hydrogenation of. The Pd/0.8Cit-HAp catalyst demonstrates remarkable performance in the selective hydrogenation of cinnamaldehyde, achieving approximately 90 % selectivity toward cinnamyl alcohol and 100 % conversion. This enhanced selectivity is attributed to the presence of small palladium nanoparticles (∼2.7 nm) with surface electropositive Pd^2 + sites, as identified by X-ray photoelectron spectroscopy (XPS). These Pd²⁺ sites, stabilized by citrate functionalization, promote preferential adsorption and polarization of the carbonyl (C<img>O) group, thereby directing the reaction pathway toward the desired unsaturated alcohol. The observed structure sensitivity in the hydrogenation of C<img>O versus C<img>C bonds, along with the intrinsic activities (TOF), was attributed to size-dependent effects of palladium particles, which were controlled by the citrate groups on the hydroxyapatite surface.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137035"},"PeriodicalIF":4.9,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891793","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":"Exploring the multifaceted potential of Ga3+ doped ZnO nanoparticles in biomedical and forensic applications","authors":"I.S. Pruthviraj ,&nbsp;B.R. Radha Krushna ,&nbsp;S.C. Sharma ,&nbsp;Maitreyee Panda ,&nbsp;Jayannan ,&nbsp;Lambodaran Ganesan ,&nbsp;K. Manjunatha ,&nbsp;Sheng Yun Wu ,&nbsp;M.V. Manjula ,&nbsp;V. Shivakumar ,&nbsp;S. Devaraja ,&nbsp;H. Nagabhushana","doi":"10.1016/j.colsurfa.2025.137058","DOIUrl":"10.1016/j.colsurfa.2025.137058","url":null,"abstract":"<div><div>This study presents the synthesis and multifunctional evaluation of Ga³⁺-doped Zinc oxide (ZnO) nanoparticles (NPs) using a solution combustion method with honey as a biogenic fuel. Ga³⁺ concentrations from 1 to 11 mol% were incorporated into ZnO, yielding particles with a hexagonal wurtzite structure, confirmed by X-ray diffraction (XRD), and scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) analysis verified successful Ga³⁺ integration without secondary phase formation, diffuse reflectance spectroscopy (DRS), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), and photoluminescence (PL) spectroscopy. PL studies revealed a strong UV emission peak at 385 nm and broad visible emission from 420–660 nm under 248 nm excitation, highlighting their potential in anti-counterfeiting (AC) applications through UV-activated security inks and labels. For forensic applications, ZnO:1Ga³⁺ NPs demonstrated excellent visualization of latent fingerprints (LFPs), capturing detailed ridge and pore features on porous and non-porous surfaces, making them a reliable, non-destructive tool for personal identification. Biological assessments revealed notable antioxidant activity, with ZnO:1Ga³⁺ NPs effectively scavenging DPPH and H₂O₂ radicals, along with inhibiting ADP-induced platelet aggregation, suggesting therapeutic potential in mitigating oxidative stress and thrombotic conditions. Additionally, cytotoxicity tests on A549 lung cancer cells showed a dose-dependent reduction in cell viability, achieving a 68.52 % decrease at 100 μg/mL and an <em>IC</em>_<em>50</em> of 164.28 μg/mL. In contrast, HEK-293 normal embryonic kidney cells retained over 90 % viability across the same concentration range, highlighting the anticancer potential of ZnO:1Ga³⁺ NPs. To evaluate the specific advantages of Ga³⁺ doping, control experiments with undoped ZnO NPs were conducted. Compared to ZnO:1Ga³⁺, the undoped ZnO showed higher cytotoxicity toward HEK-293 cells (<em>IC</em>_<em>50</em> = 587.88 μg/mL), confirming the improved biocompatibility imparted by Ga³⁺. These findings establish ZnO:Ga³⁺ NPs as versatile materials suitable for AC, forensic, and biomedical applications, combining stability, biocompatibility, and targeted efficacy, making them promising candidates for advanced technological and therapeutic solutions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137058"},"PeriodicalIF":4.9,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892289","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":"Efficient photocatalytic degradation of 2,4,6-trichlorophenol by Z-scheme α-MnO2/Bi2S3 enriched with double vacancies under visible light: Mechanism and degradation pathway","authors":"Jinmei Xu ,&nbsp;Senqi Xu ,&nbsp;Shangqing Tang ,&nbsp;Luyao Wang ,&nbsp;Kui Wan ,&nbsp;Chuqiao Wang","doi":"10.1016/j.colsurfa.2025.137059","DOIUrl":"10.1016/j.colsurfa.2025.137059","url":null,"abstract":"<div><div>The widespread use and release of 2,4,6-Trichlorophenol (TCP) poses a significant risk to water bodies and ecosystems. Designing efficient and stable catalysts for photocatalytic degradation of TCP remains a great challenge. In this paper, a Z-scheme α-MnO₂/Bi₂S₃ (Mn/Bi) composite enriched with oxygen (O_Vs) and sulfur (S_Vs) vacancies is designed for photocatalytic degradation of TCP. 60-Mn/Bi achieved 88 % degradation efficiency for 20 mg/L TCP solution. The reaction rate (<em>k</em>) of 60-Mn/Bi is 6.46 and 4.41 times higher than that of α-MnO₂ and Bi₂S₃, respectively. The catalyst exhibited high catalytic activity in a wide pH range and high resistance to anion. In addition, the cycling performance of 60-Mn/Bi is relatively stable, and the ion leaching rate is low. The Z-scheme mechanism is confirmed by characterization and DFT, which effectively retained the strong redox capacity. The abundant vacancy structure enhances the adsorption of TCP and promotes the migration of photogenerated carriers. In addition, the rod-shaped Bi₂S₃ provides a carrier for α-MnO₂ nanoparticles, which effectively alleviates agglomeration and thus exposes more active sites. Three possible degradation pathways were explored by LC-MS and DFT. This study provides a facile method and guidance for the preparation of Z-scheme catalysts to improve photocatalytic degradation performance.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"719 ","pages":"Article 137059"},"PeriodicalIF":4.9,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885961","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}