ACS Omega最新文献

{"title":"Exploration of Experimental Research and Molecular Dynamics Simulation on the Adsorption and Desorption Characteristics of Gas-Bearing Coal with Water-Based Mucilage Suppression","authors":"Wenbin Jin,&nbsp;, ,&nbsp;Yanpeng Xu*,&nbsp;, ,&nbsp;Zhi Li,&nbsp;, and ,&nbsp;Xin Zhang,&nbsp;","doi":"10.1021/acsomega.5c02732","DOIUrl":"https://doi.org/10.1021/acsomega.5c02732","url":null,"abstract":"<p >In response to the severe issue of excessive gas emissions and the increased risk of gas accidents during mining face operations, our team has developed a novel, efficient gas-blocking suppressant for coal mines─aqueous mucilage. This study combines ¹³C NMR, Fourier-transform infrared (FTIR), low-temperature nitrogen adsorption microphysical experiments with molecular dynamics simulations to explore the inhibitory mechanisms on the adsorption and desorption properties of coal. The results indicate that, after treatment with aqueous mucilage, the coal sample’s ability to adsorb and desorb methane molecules is significantly reduced. Water-based mucilage blocks or covers the pore structure of coal, leading to a significant reduction in the total specific surface area and total pore volume of the coal. This, in turn, affects the channels for methane adsorption and desorption, thereby weakening the coal’s ability to adsorb and desorb methane. Post-treatment, the coal surface shows an increase in aliphatic carbon content, a decrease in carboxyl groups, and an increase in carbonyl groups, thereby inhibiting the adsorption and desorption processes of methane molecules. Meanwhile, the effect of aqueous mucilage on the coal’s hydroxyl, aromatic ring, and aromatic hydrocarbon structures is minimal. Based on these findings, the molecular structure of the coal macromolecule is identified as C₁₂₃H₆₀N₂O₅. Molecular dynamics simulation results further indicate that the addition of aqueous mucilage significantly enhances the hydrophilicity of coal, increases the diffusion coefficient of water molecules on the coal surface, and further strengthens the “water lock effect,” thereby hindering the adsorption and desorption processes of methane molecules. Furthermore, the introduction of the water-based Mucilage increases the interactions and coordination number between methane molecules as well as between the coal structure and methane molecules, which in turn reduces the diffusion coefficient of methane. This results in a further weakening of the coal’s desorption capacity for methane molecules. At the same time, the addition of the water-based Mucilage significantly decreases the total energy of the system and the interaction energy between coal and methane, which increases the energy required for methane desorption from the coal. Consequently, the desorption process becomes more difficult, further impairing the coal’s ability to desorb methane molecules. This study reveals the microscopic mechanism by which aqueous mucilage inhibits methane adsorption and desorption in coal through both physical and chemical interactions, providing important theoretical insights for gas control in coal mines.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"47936–47953"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c02732","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lectin from Vatairea macrocarpa (Benth.) Ducke Exhibits Selective Cytotoxicity and Angiogenesis Inhibition in Lung Cancer Cells","authors":"Adrielle Rodrigues Costa,&nbsp;, ,&nbsp;Renato Rodrigues Roma,&nbsp;, ,&nbsp;Abel Vieira de Melo Bisneto,&nbsp;, ,&nbsp;Felipe Eduardo Alves De Paiva,&nbsp;, ,&nbsp;Jefferson Hollanda Véras,&nbsp;, ,&nbsp;Juliana Santana De Curcio,&nbsp;, ,&nbsp;Lívia Do Carmo Silva,&nbsp;, ,&nbsp;Lee Chen-Chen,&nbsp;, ,&nbsp;Cléver Gomes Cardoso,&nbsp;, ,&nbsp;Elisângela de Paula Silveira-Lacerda,&nbsp;, and ,&nbsp;Claudener Souza Teixeira*,&nbsp;","doi":"10.1021/acsomega.5c08096","DOIUrl":"https://doi.org/10.1021/acsomega.5c08096","url":null,"abstract":"<p >Angiogenesis plays a vital role in tumor development, and its inhibition, along with selective cytotoxicity, represents a promising strategy for cancer treatment. Lectins, carbohydrate-binding proteins, have demonstrated dual potential in blocking angiogenesis and selectively targeting tumor cells. This study investigates the antiangiogenic and cytotoxic properties of <i>Vatairea macrocarpa</i> lectin (VML) through the chorioallantoic membrane (CAM) assay and tests on normal VERO cells and tumor cell lines A549, SH-SY5Y, S180, and B16-F10. VML exhibited selective cytotoxicity exclusively against A549 lung carcinoma cells, with an IC₅₀ of 97.21 μg/mL, showing no significant toxicity to other lines. In the CAM assay, VML significantly inhibited neovascularization triggered by A549 cells, reaching 70.38% inhibition at 100 μg/mL. Immunohistochemical analyses confirmed the suppression of angiogenesis by showing decreased expression of VEGF and TGF-β. Histological assessments also revealed reductions in new vessel formation, inflammatory cell infiltration, fibroblast presence, and membrane thickening. These results highlight VML’s dual role in inhibiting angiogenesis and exerting selective cytotoxicity, likely due to its specific interaction with tumor-associated carbohydrates. Consequently, VML emerges as a potential candidate for targeted cancer therapy or as a complementary therapeutic agent. Further research is necessary to fully understand the molecular mechanisms underlying its antitumor activity.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"49148–49157"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c08096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research Progress on the Pathogenesis of Post-Stroke Depression","authors":"Jiamin Chen,&nbsp;, ,&nbsp;Wentao Li,&nbsp;, ,&nbsp;Junjie Por,&nbsp;, ,&nbsp;Haili Liu,&nbsp;, ,&nbsp;Yihang Shen*,&nbsp;, and ,&nbsp;Li Cai*,&nbsp;","doi":"10.1021/acsomega.5c05338","DOIUrl":"https://doi.org/10.1021/acsomega.5c05338","url":null,"abstract":"<p >Poststroke depression (PSD) is a common neuropsychiatric complication following stroke. Clinically, it is characterized by persistent low mood, cognitive dysfunction, and somatic symptoms, which severely impact the recovery and quality of life of stroke patients, making it an urgent issue in clinical practice. Currently, the pathogenesis of PSD remains incompletely understood. This study presents a narrative review of the literature from PubMed, Web of Science, and CNKI, with a particular focus on research conducted between 2021 and 2025. The findings reveal that advancements in neuroscience, immunology, and gut microbiome studies have contributed to important breakthroughs in understanding the mechanisms underlying PSD, such as the interaction between the hypothalamic–pituitary–adrenal (HPA) axis and neuroinflammation. In terms of treatment, several novel approaches have emerged. Traditional Chinese medicine (TCM) has attracted increasing attention due to its low cost, high safety, and minimal side effects. Herbal formulas have shown promising therapeutic effects for PSD. Moreover, combination therapies, such as acupuncture combined with repetitive transcranial magnetic stimulation (rTMS), have been demonstrated to be more effective than monotherapies. This review summarizes the multidimensional pathophysiology of PSD, including neurotransmitter imbalance, neuroinflammation, impaired neuroplasticity, structural brain damage, HPA axis dysregulation, gut-brain axis imbalance, and psychosocial factors. Additionally, current clinical treatment strategies for PSD are reviewed, with the aim of providing a theoretical foundation for early diagnosis, timely intervention, the development of novel anti-PSD therapies, and the establishment of more comprehensive treatment strategies for PSD.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"47777–47789"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c05338","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of Pineapple Leaf Waste for Methylene Blue Adsorption: A Comparative Study of Natural and Modified Adsorbents","authors":"Chayanit Rungrattanachai,&nbsp;, ,&nbsp;Taweechai Amornsakchai,&nbsp;, and ,&nbsp;Pornsawan Amornsakchai*,&nbsp;","doi":"10.1021/acsomega.5c06723","DOIUrl":"https://doi.org/10.1021/acsomega.5c06723","url":null,"abstract":"<p >Synthetic dyes like methylene blue (MB) are widely used in textiles and pharmaceuticals but pose environmental risks when discharged into wastewater. This study evaluates pineapple leaf biomass as a low-cost, biodegradable adsorbent for MB removal. Four materials─raw fiber (PALF), nonfibrous material (NFM), alkali-treated microfibers (PALMF), and ultrasonically treated PALMF (Ultra_PALMF)─were prepared and characterized. PALF achieved the highest adsorption capacity (53.93 mg g^–1), while NFM showed excellent reusability, retaining &gt;96% efficiency after three cycles. Nonlinear kinetic analysis indicated that adsorption generally followed the pseudo-second-order model, though PALF was better described by the pseudo-first-order model. Equilibrium data were best represented by the Sips model, confirming the heterogeneous nature of the adsorption sites. Thermodynamic analysis confirmed a spontaneous, exothermic process. These findings highlight pineapple leaf waste as a sustainable alternative for dye removal, with NFM offering strong potential for practical reuse.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"48711–48722"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c06723","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring Symmetry-Independent Configurations in KTa0.5Nb0.5O3 Solid Solutions: A First-Principles, QTAIM, and AIMD Approach","authors":"Jeronimo F. Silva,&nbsp;, ,&nbsp;Ismael D. Souto,&nbsp;, ,&nbsp;Julio Ricardo Sambrano,&nbsp;, ,&nbsp;Anderson Reis Albuquerque,&nbsp;, and ,&nbsp;Ary S. Maia*,&nbsp;","doi":"10.1021/acsomega.5c08252","DOIUrl":"https://doi.org/10.1021/acsomega.5c08252","url":null,"abstract":"<p >Potassium tantaloniobate (KTN) is a lead-free perovskite solid solution with promising electro-optic, ferroelectric, and dielectric applications. Here, we present a systematic first-principles study of KTa_0.5Nb_0.5O₃, exploring all 21 symmetry-independent configurations (SICs) in 2 × 2 × 2 cubic and tetragonal supercells. Configurational energy analysis identifies the most stable atomic arrangements, which are further characterized through band structure, density of states, and quantum theory of atoms in molecules (QTAIM) descriptors. Ab initio molecular dynamics (AIMD) simulations at finite temperature confirm the dynamical robustness of low-energy models and highlight subtle symmetry-dependent fluctuations. The results demonstrate how B-site ordering modulates electronic structure and bonding, offering guidance for the design of compositionally engineered perovskites for electro-optic and dielectric technologies.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"49158–49167"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c08252","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancing Green Gasification─A Review on Biological Pretreatment, Syngas Purification, Machine Learning Technology, and Techno-economic Insights for Biofuel Production","authors":"Sankar Sudharsan Rameshwar,&nbsp;, ,&nbsp;Santhosh Paramasivam*,&nbsp;, ,&nbsp;Natarajan Rajamohan*,&nbsp;, ,&nbsp;Brindha Sakthivel,&nbsp;, ,&nbsp;Dhivya Dharshika Kannan,&nbsp;, ,&nbsp;Baskaran Sivaprakash,&nbsp;, and ,&nbsp;Gianluca Gatto,&nbsp;","doi":"10.1021/acsomega.5c04385","DOIUrl":"https://doi.org/10.1021/acsomega.5c04385","url":null,"abstract":"<p >The dependence on conventional fossils for energy and the ongoing utilization of carbonaceous resources significantly burden the environment. Consequently, researchers have strived to establish sustainable energy-generating methods that employ renewable resources to minimize environmental stress. Gasification of biomass is a potential route to harness the potential of biological reserves. This process strategically employs various agents to catalyze the desired reactions, facilitating the transformation of biomass feedstocks into fuels or alternative products. This article explores various gasification technologies, including catalytic gasification, steam gasification, and supercritical and subcritical water gasification, as a sustainable approach for converting lignocellulosic agricultural residues into biohydrogen. Additionally, comprehensive insights into syngas purification methodologies and carbon sequestration from the produced syngas are presented. One of the key highlights of this review is the utilization of machine learning models for enhancing the efficiency of gasification systems, showcasing the interdisciplinary nature of the research and its potential for future advancements. An economic evaluation is also presented. Implementing supercritical water gasification on lignocellulosic biomass has significantly increased the syngas production rate while decreasing the reaction time. Similarly, in catalytic gasification techniques that employ a variety of metallic and ceramic catalysts, a substantial increase in syngas output has been observed, featuring increased proportions of hydrogen and carbon oxides as well as a complete reduction in tar formation.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"47761–47776"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c04385","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrodeposition Process for Optimizing Cu2Se Films with Controlled Surface Morphology and Structural Properties","authors":"Collen Takaza,&nbsp;, ,&nbsp;Yasuhiro Fukunaka,&nbsp;, and ,&nbsp;Takayuki Homma*,&nbsp;","doi":"10.1021/acsomega.5c06813","DOIUrl":"https://doi.org/10.1021/acsomega.5c06813","url":null,"abstract":"<p >Thick copper selenide (Cu₂Se) films were synthesized potentiostatically in acidic aqueous solutions, demonstrating a controlled and scalable pathway for fabricating high-performance microdevices. The study systematically examined the influence of solution composition and pH on film morphology, revealing that pH is critical in achieving compact, nonporous, and smooth-surfaced films. For the first time, scanning electron microscopy (SEM) and atomic force microscopy (AFM) confirmed the deposition of up to 12.5 μm-thick Cu₂Se films with an impressively low average surface roughness of 130 nm in a solution with a pH value less than 1.5, a significant improvement over previously reported values in the literature. With higher pH values exceeding 1.5, the experimental data indicated increased surface roughness and reduced current efficiency. Electrochemical deposition was explored within a potential window of +0.1 to −0.6 V vs Ag/AgCl (sat, KCl), where more positive potentials favored the formation of Cu₃Se₂ while Cu₂Se was stabilized at more negative potentials. For potentials below −0.37 V, the films were loosely attached to the substrate. X-ray diffraction (XRD) confirmed the polycrystalline nature of the films, with an average crystal size of 18.4 nm, and no detection of elemental Cu or Se at potentials below −1.3 V.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"48798–48807"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c06813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Study on a Nanoemulsion for EOR in High-Temperature, High-Salinity, Low-Permeability Reservoirs and Its Performance","authors":"Yan Zhang,&nbsp;, ,&nbsp;Dingxue Zhang*,&nbsp;, ,&nbsp;Yong Wang,&nbsp;, ,&nbsp;Jun Chen,&nbsp;, ,&nbsp;Mengke Xin,&nbsp;, ,&nbsp;Qirui Zhang,&nbsp;, ,&nbsp;Yiwei Qin,&nbsp;, and ,&nbsp;Linshuo Yan,&nbsp;","doi":"10.1021/acsomega.5c08116","DOIUrl":"https://doi.org/10.1021/acsomega.5c08116","url":null,"abstract":"<p >Nanoemulsion has significant application potential in enhancing oil recovery in low-permeability reservoirs due to its unique nanoscale size and excellent interfacial properties. In this paper, a novel nanoemulsion flooding system was prepared by a microemulsion dilution method, using nonionic surfactant fatty alcohol polyoxyethylene ether (AEO-9), zwitterionic surfactant cocoamidopropyl hydroxy sulfobetaine (CHSB), liquid paraffin, oleic acid, n-butanol, and aqueous sodium tosylate. The key performance parameters, such as droplet size, interfacial tension (IFT), and wettability, were evaluated in the laboratory, and the oil displacement performance of the nanoemulsion was assessed through an oil-washing ability experiment and a displacement experiment. The results showed that the droplet size of the nanoemulsion system was 30–50 nm. It has ultralow IFT (&lt;1 × 10^–2 mN/m) and could change the core surface from hydrophobic to hydrophilic, maintaining emulsion stability even at a high temperature of 100 °C. Through the displacement experiment, the nanoemulsion demonstrated the characteristics of “rapid breakthrough-high-efficiency transport” (diffusion coefficient of 5.086 × 10^–4 cm²/s). Finally, an additional oil recovery of 17.71% was achieved when the nanoemulsion injection concentration was 0.30 wt % and the injection volume was 0.4 PV. The nanoemulsion system using aqueous sodium tosylate (NaOTs) as the continuous phase exhibits both high-salt tolerance and high-temperature hydrolysis resistance, making it suitable for nanoemulsion flooding in high-temperature, high-salt reservoirs. This paper aids in selecting the optimal nano-oil displacement agent for enhanced oil recovery (EOR) projects in high-temperature, high-salinity, low-permeability reservoirs and promotes the application of nanoemulsions in oil fields.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"49136–49147"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c08116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmentally Safe Synthesis of Gold Nanoparticles for Antigen Detection in CLIA System","authors":"Keilla Gomes Machado,&nbsp;, ,&nbsp;Luiza Felippi de Lima,&nbsp;, ,&nbsp;Wellington Vieira de Souza,&nbsp;, ,&nbsp;Raquel Checca,&nbsp;, ,&nbsp;Daniel R. Louzada,&nbsp;, ,&nbsp;Rubem L. Sommer,&nbsp;, ,&nbsp;André Felipe Streck,&nbsp;, ,&nbsp;Cesar Aguzzoli,&nbsp;, and ,&nbsp;Mariana Roesch-Ely*,&nbsp;","doi":"10.1021/acsomega.5c07361","DOIUrl":"https://doi.org/10.1021/acsomega.5c07361","url":null,"abstract":"<p >The use of gold nanoparticles (AuNPs) has been explored in the last decades, and most recently, efforts have been made to associate their production with environmentally safe routes and biotechnological processes. The versatility of bioconjugation strategies used for AuNPs makes them a promising tool for developing alternative detection methods for traditional diagnostic assays. In this work, we present a chemiluminescent immunoassay based on AuNPs for specific and sensitive detection of SARS-CoV-2. The AuNPs were processed through a physical route, deposited on a solid substrate via magnetron sputtering, and functionalized with anti-SARS-CoV-2 antibodies. The colloidal stability of the AuNPs was monitored through UV–vis spectroscopy and transmission electron microscopy (TEM). UV–vis showed a plasmon resonance peak at ∼535 nm, consistent with the TEM results, which presented an average size of the AuNP around 40 nm. Altogether, nasopharyngeal swabs of 180 patients were tested with the antibody-AuNP bioconjugates to recognize their corresponding antigens through chemiluminescent immunoassays (CLIA). To assess the affinity and specificity of the functionalized AuNPs, comparative experiments of CLIA and classical enzyme-linked immunosorbent assay (ELISA) were conducted. CLIA results outperformed ELISA and were effective in detecting SARS-CoV-2–positive samples with a viral load exceeding 1.19 ng/mL. Analysis of the Receiver Operating Characteristic curve yielded an AUROC of 0.909 (95% CI: 0.864–0.955), indicating excellent discriminative ability, with a sensitivity of 91% and a specificity of 85%. The results provided new insights into AuNPs produced by an environmentally safe synthesis with excellent functionalization and detection capability for diagnostic applications.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"48976–48983"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c07361","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Investigation of the Effect of Viscoelasticity on Enhanced Oil Recovery during Polymer Flooding","authors":"Anil,&nbsp;, ,&nbsp;Anas Azeem,&nbsp;, ,&nbsp;Amit Kumar*,&nbsp;, and ,&nbsp;Amit Saxena,&nbsp;","doi":"10.1021/acsomega.4c11099","DOIUrl":"https://doi.org/10.1021/acsomega.4c11099","url":null,"abstract":"<p >Polymer flooding, which is a promising chemical enhanced oil recovery (EOR) method, leads to more efficient extraction of oil from depleted reservoirs and has proven technical and economic success in various projects where oil recovery often increases considerably. During polymer flooding, viscosity helped to maintain a favorable mobility ratio. Through increased water phase viscosity and improved sweep efficiency, polymer solutions improved oil recovery. Viscoelastic polymers can improve oil recovery beyond that of inelastic polymers by mobilizing the residual oil and increasing the microscopic displacement efficiency. These polymers can mobilize oil entrapped in porous media due to high capillary forces, rock configuration, or rock attraction by stripping, dragging, and pulling oil molecules into pore channels. In the present study, the effect of the two polymers on oil recovery and breakthrough was determined by selecting polymer concentrations to maintain similar viscosities with different viscoelastic behaviors. A rheological approach for the determination of storage, loss modulus, and relaxation modulus was adopted to determine the difference in the elastic behavior of the HPAM-2625 and carboxymethyl cellulose (CMC) polymers. At the concentrations used for the investigation, it was discovered experimentally that the CMC polymer was more elastic than HPAM-2625. A higher oil recovery due to viscoelasticity was achieved in the flooding experiment. An approximately 4.9% higher recovery was observed for a higher viscoelastic candidate, the CMC polymer. This article focused on the impact of viscoelasticity on oil recovery during polymer flooding. The results of this study can be useful for guiding polymer screening, design, and optimization for flooding in oil fields.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 41","pages":"47847–47856"},"PeriodicalIF":4.3,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.4c11099","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}