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

{"title":"A flexible Ag2S QD sensitized TiO2 Janus photocatalytic nanofiber membrane for visible light organic pollutant degradation and COD removal","authors":"Shiva Pandeya ,&nbsp;Rui Ding ,&nbsp;Qianqian Shang ,&nbsp;Xueqing Zhu ,&nbsp;Yufei Ma ,&nbsp;Xuling Han ,&nbsp;Meixing Gui ,&nbsp;Narayan Bhattarai ,&nbsp;Ziliang Li ,&nbsp;Mahesh Kumar Joshi","doi":"10.1016/j.colsurfa.2024.135946","DOIUrl":"10.1016/j.colsurfa.2024.135946","url":null,"abstract":"<div><div>This study aims to develop a reusable, self-supporting Ag₂S/TiO₂ photocatalyst for the degradation of tetracycline hydrochloride (TCH) and chemical oxygen demand (COD) removal under visible light irradiation. The flexible Ag₂S/TiO₂ nanofibrous membranes (NFMs) were prepared by electrospinning and subsequent calcination followed by the deposition of Ag₂S quantum dots (QDs) on TiO₂ nanofibers by the successive ionic layer adsorption and reaction (SILAR) method. The precise deposition of Ag₂S QDs preserved the self-standing properties of TiO₂ NFM, and the amount of Ag₂S QDs was regulated by altering precursor concentration while keeping the SILAR cycles constant. The SEM-EDX, XPS, TEM, and PL measurements confirmed the formation of an Ag₂S/TiO₂ heterojunction, which lowered the band gap energy to 2.68 eV. This band gap engineering reduced the electron-hole pair recombination and accelerated TCH degradation and COD removal under visible light. The photocatalytic degradation of TCH obeyed pseudo-first-order reaction dynamics, showing a strong influence of the Ag₂S amount and the pH of the TCH solution on degradation. The Ag₂S/TiO₂ heterojunction exhibited superior photocatalytic degradation, achieving up to 85.6 % in 90 min, compared to 66.6 % for TiO₂ NFM. The TCH degradation rate significantly increased from 0.012 min⁻¹ for TiO₂ NFM to 0.029 min⁻¹ for Ag₂S/TiO₂ NFM, marking a 2.4-fold improvement. Furthermore, the optimal TCH degradation occurred at neutral pH 7, while COD removal (94.2 %) from pharmaceutical samples was most effective at acidic pH 5, demonstrating the significant influence of pH on photocatalytic pollutant removal. The as-prepared Ag₂S/TiO₂ NFM demonstrated strong recyclability, retaining high efficiency after five cycles of use, while maintaining its self-supporting properties, allowing for easy separation after application.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135946"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098291","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":"Analytical and numerical investigation of successive metallic alloy droplets impacting onto a surface: Regime maps and scaling laws based on energy analysis","authors":"Mehran Sharifi","doi":"10.1016/j.colsurfa.2024.135941","DOIUrl":"10.1016/j.colsurfa.2024.135941","url":null,"abstract":"<div><div>This study investigates the impact dynamics of two molten Al7075 droplets under varying Weber numbers (<span><math><mrow><mn>1</mn><mo>≤</mo><mi>We</mi><mo>≤</mo><mn>60</mn></mrow></math></span>) and diameter ratios (<span><math><mrow><mn>0.5</mn><mo>≤</mo><msub><mrow><mi>D</mi></mrow><mrow><mi>r</mi></mrow></msub><mo>≤</mo><mn>2</mn></mrow></math></span>) through numerical simulations using OpenFOAM software and response surface modeling with the Kriging method. Key parameters, including collision spread factor, maximum spread factor, collision time, and time to maximum spreading, are analyzed. The Kriging method demonstrates superior accuracy over Non-Parametric Regression (NPR) method, particularly in predicting spread factors and time-related dynamics, as indicated by its lower relative error. Results show that higher Weber numbers enhance the dominance of inertial forces, accelerating spreading, while lower Weber numbers lead to slower dynamics due to surface tension effects. Smaller second droplets cause more lateral spreading during collisions at lower Weber numbers, whereas at higher Weber numbers, the influence of diameter ratio diminishes as inertia prevails. The maximum spread factor significantly increases with rising Weber numbers, highlighting the correlation between impact velocity and spreading behavior. Larger diameter ratios further amplify maximum spread factors, indicating a strong influence of kinetic energy in spreading dynamics, while smaller ratios restrict spreading, especially at lower Weber numbers. For the first time, two analytical models for maximum spread factor are proposed based on energy analysis, with Model 2, which accounts for energy loss, showing better alignment with numerical results than Model 1. Moreover, a new scaling law for time to maximum spreading reveals an inverse relationship with Weber number. The study also provides regime maps that offer valuable insights for optimizing droplet impact processes in industrial applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135941"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098866","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 bio-based alternatives to cyclopentasiloxane: Paving the way to promising silicone substitutes","authors":"Mariana de Castro ,&nbsp;Catarina S. Roque ,&nbsp;Ana Loureiro ,&nbsp;Diana Guimarães ,&nbsp;Carla Silva ,&nbsp;Artur Ribeiro ,&nbsp;Artur Cavaco-Paulo ,&nbsp;Jennifer Noro","doi":"10.1016/j.colsurfa.2024.135915","DOIUrl":"10.1016/j.colsurfa.2024.135915","url":null,"abstract":"<div><div>In recent years, significant efforts have been made to identify suitable alternatives for silicones commonly used in daily cosmetic products. However, green alternatives have faced challenges in replicating the unique properties of silicone-based formulations, particularly cyclopentasiloxane, which continues to be widely used.This study explores the potential of six biosynthesized esters (heptyl heptanoate, heptyl octanoate, heptyl decanoate, decyl heptanoate, decyl octanoate, and decyl decanoate) as possible substitutes for low-viscosity silicones (∼5 mPa). The research provides a thorough characterization of these esters, starting with an analysis of their physicochemical properties (pH, viscosity, surface tension, density, refraction index, spreadability, decomposition temperature, molar transition energy and cytotoxicity) and progressing to their incorporation into a commercial cosmetic formulation. The findings reveal that all tested esters show promise as silicone alternatives, effectively matching several key properties found in silicone-based formulations, such as cyclopentasiloxane or silicone oil, as well as a commercial alternative, Cetiol® CC. Regarding the physicochemical properties, all compounds exhibited a similar range of values. Notably, heptyl heptanoate and heptyl octanoate demonstrated superior cellular biocompatibility compared to cyclopentasiloxane. Upon incorporation into a commercial formulation, an in-depth analysis was conducted, examining organoleptic properties, dynamic light scattering (DLS) and microscopy, rheology, and textural attributes. All compounds displayed comparable performance, with the formulation containing heptyl heptanoate showing the highest spreadability and the least sticky sensation through rheological and textural analysis.The synthesized bio-based esters showed promising results as cyclopentasiloxane alternatives, paving the way for the development of cleaner and more sustainable cosmetic products.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135915"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098290","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":"Evaluation of the antibacterial activity of Co-based Zeolitic Imidazolate Frameworks and validation in a daily environment","authors":"María José Martín-Martínez ,&nbsp;Lorena Álvarez-Contreras ,&nbsp;Carlos Ramos-Castillo ,&nbsp;Noé Arjona ,&nbsp;Beatriz Liliana España-Sánchez","doi":"10.1016/j.colsurfa.2024.135917","DOIUrl":"10.1016/j.colsurfa.2024.135917","url":null,"abstract":"<div><div>This study investigates the antibacterial potential of cobalt-based zeolitic imidazolate frameworks (ZIFs)—specifically, ZIF-67, ZIF-L-Co, and ZIF-9—for antimicrobial coatings on high-contact surfaces. Synthesized via solvothermal methods, ZIFs containing 2-methyl-imidazole (<em>2MIm</em>) and benzimidazole (<em>PhIm</em>) ligands exhibited varied bactericidal efficacy based on ligand structure and cobalt ion availability. Chemical analyses confirmed distinct morphologies and surface properties, with open cobalt sites in ZIF-67 and ZIF-9 and elongated structures in ZIF-L-Co. FTIR and XRD analyses verified the unique ligand compositions and sodalite-type crystalline structure of ZIF-9 and ZIF-67, with morphological differences in SEM images linked to ligand size. Among the tested materials, ZIF-67 demonstrated the highest antibacterial activity due to its extensive surface area (1128 m²/g) and enhanced generation of reactive oxygen species (ROS), achieving &gt;70 % inhibition of <em>E. coli</em> at 62.5 µg/mL within 3–24 hours. Comparatively, ZIF-9 exhibited 99 % inhibition against <em>S. aureus</em> and <em>E. coli</em> at 125 µg/mL, while ZIF-L-Co required 250 µg/mL to maintain similar inhibition levels over 24 hours against <em>E. coli</em>. Environmental validation on ZIF-67 as a door handle coating shows no microbial growth after 5 days of continuous use, demonstrating the higher bactericidal capacity of ZIFs nanostructures under real conditions, with potential application as effective antibacterial coatings. These findings highlight the critical influence of cobalt ion availability and ligand structure on bactericidal efficiency, underscoring ZIF-67’s potential for durable antimicrobial applications in frequently used environments.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135917"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098858","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":"Black Mustard Seed Extract as a new greener corrosion inhibitor: Experimental and DFT studies","authors":"Omar Belhadj ,&nbsp;Zouhair El Fakir ,&nbsp;Abdelhay El Amri ,&nbsp;Abdennacer Idrissi ,&nbsp;Cherrouf Sghir ,&nbsp;Said Bouzakraoui ,&nbsp;Moussa Ouakki ,&nbsp;Mohammed Cherkaoui","doi":"10.1016/j.colsurfa.2024.135911","DOIUrl":"10.1016/j.colsurfa.2024.135911","url":null,"abstract":"<div><div>An ecologically acceptable mild steel corrosion inhibitor that works in sulfuric and hydrochloric acids was tested using Black Mustard Seed Extract (BMSE). GC-MS and FTIR analyses were used to determine the phytochemical content. Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and weight loss (in conjunction with ICP-AES and UV-Vis) were used to evaluate the effectiveness of corrosion inhibition. Scanning electron microscope and energy-dispersive X-ray spectroscopy (SEM/EDX) were used to characterize the surface. Density functional theory (DFT) computations revealed the adsorption process. The highest efficiency was achieved by BMSE at 400 ppm, with maximal inhibition efficiency of 92.5 % in HCl and 89.8 % in H₂SO₄. Following the Langmuir adsorption isotherm, BMSE displayed mixed-type inhibition behavior. DFT simulations verified the formation of a protective layer on the steel surface by displaying a donor-acceptor interaction.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135911"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098292","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":"Polymeric nanofluids of oilfield polymers for subsurface flow applications: Synthesis, interfacial and rheological analysis","authors":"Alpana Singh ,&nbsp;Krishna Raghav Chaturvedi ,&nbsp;Mahmood M.S. Abdullah ,&nbsp;Stefan Iglauer ,&nbsp;Alok K. Singh ,&nbsp;Tushar Sharma","doi":"10.1016/j.colsurfa.2024.135913","DOIUrl":"10.1016/j.colsurfa.2024.135913","url":null,"abstract":"<div><div>This study investigates the potential of stable polymeric nanofluids synthesized via the single-step route for subsurface flow applications in oilfields. The nanofluids were prepared using polymers e.g., polyvinyl alcohol (PVA) (8000 ppm) and xanthan gum (XG) (2000 ppm) and following characterization, their properties were found to exhibit shear thinning profile as well as exhibit great stability at higher salinity. The study focuses on assessing their suitability by surface and interfacial investigations along with conducting shear and oscillatory rheology studies under varying shear conditions. In absence of saline environment, minimum interfacial tension (IFT) value for XG based nanofluid having size 100 nm (X1) was 4.3 mN/m among XG based nanofluids whereas PVA based nanofluid having size 115 nm (P4) exhibited minimum IFT of 7.3 mN/m among PVA based nanofluids. Among prepared nanofluids, P4 and X1 exhibited minimum value of IFT at higher salinity of 32000 ppm, that is, 8.3 mN/m and 6 mN/m and IFT was conducted between crude oil and nanofluid. In addition, during wettability studies, PVA based nanofluid having size 16.9 nm (P2) and X1 possessed minimum value of contact angle, which is 60° and 55° at higher salinity of 32000 ppm. The findings provide valuable insights into the rheological behavior of these nanofluids, shedding light on their performance and potential applications in oilfield environments. All the prepared nanofluids exhibited a shear thinning nature and were in the range of 28.719 mPa.s to 18.128 mPa.s at a shear rate of 1000 s⁻¹. With an increase in temperature (90 °C) causing the nanofluids to exhibit a fall in the values from 68.7 % to 37 %. Finally, the oscillatory rheology was conducted to analyze the viscoelastic properties of all prepared nanofluids and are found to be viscoelastic in nature. The reported observations contribute to advancing the understanding of polymeric nanofluids' behavior in complex flow conditions, laying the groundwork for further research and application development in the field of subsurface flow management.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135913"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098868","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":"Dynamic behaviors of capillary water menisci during lithography process for dip-pen nanolithography","authors":"Guang Chen ,&nbsp;Zhaoyang Yin ,&nbsp;Linjie Zhao ,&nbsp;Jian Cheng ,&nbsp;Mingjun Chen ,&nbsp;Hongqin Lei ,&nbsp;Zishuai Zhang ,&nbsp;Jixiang Chen","doi":"10.1016/j.colsurfa.2024.135908","DOIUrl":"10.1016/j.colsurfa.2024.135908","url":null,"abstract":"<div><div>The stable water menisci are the key to guarantee the stability of molecular self-assembly processes for Dip-pen Nanolithography (DPN). However, the mainstream quasi-static method ignores tip velocity, boundary slip, etc., posing challenges for analyzing dynamic behaviors of the meniscus. Besides, the influences of the DPN parameters (humidity, temperature, tip structure, etc.) on the dynamic menisci remain unclear. In this work, a simulation model is established based on the Computational Fluid Dynamics, Phase Field theory, and Navier slip boundary to break the limitations of the prevailing quasi-static method and track the dynamic meniscus profiles. Its effectiveness is proved by comparing dynamic relaxation results with static meniscus profile under thermodynamic equilibrium. The Weber similarity criterion and Tolman theory further demonstrate its validity for the meniscus of which volume is over 200 nm³. The dynamic menisci are laminar flow driven by surface tension. As the probe is lifted off, the stabilities of the menisci are determined by their volumes. The dynamic rupture distances exhibit a power relationship with the volumes, and they are much larger than the static rupture distances. The high-humidity, low-temperature, hydrophilic surface, blunted probe, and contact SPM mode contribute to improve the stability of the DPN processes by increasing the meniscus volumes. Besides, the volumes of residual droplets on the probe- and substrate- surfaces are determined by their equivalent wettability, and the dynamic rupture distances reach the maximum when their equivalent wettability is the same. It is also found that the dynamic behaviors of the menisci are closely related to tip velocity, proving that the mainstream quasi-static method is controversial. The rupture distances increase rapidly with tip velocity of &lt; 10 mm/s. As the probe traverses laterally, the excessive velocity differences (&gt; 6 mm/s) would overstretch and destroy the menisci. This work helps to provide theoretical references for studying micro-nano fluid flow and probe-based techniques.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135908"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098856","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":"Targeted, pH-responsive quercetin delivery via hyaluronic acid-functionalized mesoporous nanoparticles for cancer treatment","authors":"Hanh-Vy Tran Nguyen ,&nbsp;Ngoc Xuan Dat Mai ,&nbsp;Hoa Thi Lai ,&nbsp;Linh Ho Thuy Nguyen ,&nbsp;Quyen Toan Pham ,&nbsp;Ha Van Nguyen ,&nbsp;Minh-Tri Le ,&nbsp;Thi-Hiep Nguyen ,&nbsp;Long Binh Vong ,&nbsp;Tan Le Hoang Doan","doi":"10.1016/j.colsurfa.2024.135914","DOIUrl":"10.1016/j.colsurfa.2024.135914","url":null,"abstract":"<div><div>In this study, biodegradable organosilica nanoparticles were functionalized with hyaluronic acid (HA) to develop a targeted, pH-responsive drug delivery system for quercetin (QT). The QT loading capacity of the synthesized nanoparticles was assessed with varying initial QT concentrations and solvents. In vitro release profiles indicated that HA-modified nanoparticles effectively minimize QT leakage at pH 7.4, reducing premature QT loss during delivery. Cellular uptake and cytotoxicity assays demonstrated that HA-modified nanoparticles enhance cancer cell uptake by twofold compared to unmodified nanoparticles, leading to increased cytotoxicity in MCF-7 cancer cells while exhibiting no toxicity to normal L929 cells. This study highlights the potential of HA-functionalized BPMO nanoparticles for targeted cancer therapy.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135914"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098296","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":"Optimization of electrospun amidoximated siliceous mesocellular foam-cellulose membranes for selective extraction of uranium","authors":"Lili Chen ,&nbsp;Yu Zhou ,&nbsp;Peiling Yuan","doi":"10.1016/j.colsurfa.2024.135898","DOIUrl":"10.1016/j.colsurfa.2024.135898","url":null,"abstract":"<div><div>Utilization of powdery sorbents as a membrane form is effective to address the long-term limitation of their separation difficulty from aqueous solutions. Herein, through optimizing electrospinning conditions including spinning voltage (10–25 kV), injection speed (0.4–1.6 mL/h) and receiving distance (8–20 cm) for cellulose membranes, cellulose/amidoximated siliceous mesocellular foam (CL/AMCF) membranes with uniform distributed diameter (269.9–279.7 nm) and developed porosity (26.3–88.7 m²/g) were fabricated by dispersing AMCF particles (426.5–136.3 m²/g) in spinning solvent. CL/AMCF membranes captured U(VI) rapidly (30.0 min) with excellent <em>q</em>_<em>max</em> (270.1 mg/g) and reusability (89.4 % of capacity remained after six cycles). Aquatic U(VI) was captured by CL/AMCFs with rapid equilibrium (30.0 min), excellent capacity (270.1 mg/g) and selectivity coefficients (9.70–15.89 from simulated nuclide water and 4.11–14.66 from simulated seawater). High selectivity coefficients of U(VI) from nuclide-containing wastewater (i.e., 9.70–15.89) and artificial seawater (i.e., 4.11–14.66) was presented against the interference of multiple metal ions. CL/AMCFs could capture U(VI) efficiently from both U(VI)-containing simulated and real solutions through a fix-bed column. Spectroscopic analysis verified that the formation of strong surface complexes between N/O atoms of amidoxime group and U(VI) dominated the sorption mechanism. This work provided a valuable knowledge for the fabrication of electrospun CL/AMCF membranes as well as the combination of CL and AMCF to enrich U(VI).</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135898"},"PeriodicalIF":4.9,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098861","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":"Heat-induced Pleurotus ostreatus protein gel improved by konjac glucomannan: Physicochemical, gel and structural properties","authors":"Zheng Qian ,&nbsp;Yunzhu Qiu ,&nbsp;Sijie Zhang ,&nbsp;Sizhe Dong ,&nbsp;Liyan Zhao","doi":"10.1016/j.colsurfa.2024.135899","DOIUrl":"10.1016/j.colsurfa.2024.135899","url":null,"abstract":"<div><div>This study investigated the influence of konjac glucomannan (KGM) on the physicochemical and structural properties of <em>Pleurotus ostreatus</em> protein (POP) gels, and explored the potential mechanism. Results demonstrated that konjac glucomannan (KGM) addition reduced turbidity, increased Zeta-potential and particle size, and promoted solution stability. Lower KGM addition (0.1 %–0.6 %) significantly improved the hardness, elasticity, chewiness, water holding capacity (WHC), storage modulus, and loss modulus of POP gels, especially for the 0.6 % KGM addition. However, higher addition of KGM (0.8 %–1.0 %) decreased the textural properties and WHC of POP gels. Secondary structure analysis showed that adding 0.6 % KGM increased the <em>α</em>-helix content from 13.76 % to 17.82 %, while the <em>β</em>-sheet content increased from 31.06 % to 45.45 %. Molecular forces and scanning electron microscopy showed that the addition of KGM enhanced the hydrogen bond and disulfide bond, promoting the formation of a denser network structure with good uniformity of the composite gels. Principal component and correlation analysis showed that hardness and WHC of the gels had high positive correlation with hydrogen bond, disulfide bond, <em>β</em>-sheet and random coil. This study provided a foundation for using KGM/POP composite gels in plant-based substitutes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135899"},"PeriodicalIF":4.9,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098896","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}