化学最新文献

{"title":"A cationic complex scavenges radicals to suppress chain reaction and enhance sulfite denitration: mechanism and kinetics.","authors":"Jingwen Qian, Zheng Lian, Shule Zhang, Qin Zhong","doi":"10.1016/j.jcis.2026.141062","DOIUrl":"10.1016/j.jcis.2026.141062","url":null,"abstract":"<p><p>The inefficient capture of industrially emitted NO_x in wet absorption denitration technology owing to the substantial ineffective oxidation of active component in conventional aqueous absorbent by O₂ in flue gas impedes atmospheric pollution mitigation. The central point is the fast oxidation kinetics of SO₃^2- through O₂-mediated SO₃^·- radical chain reactions. This work developed an oxidation-resistant aqueous absorbent by combining the cationic trapping agent 18-Crown-6 (18C6) with a typical sulfite solution. IC, ¹H NMR, ESI-MS, EPR, ion competition, and simulations at the DFT level collectively verified a new antioxidant pathway to block the chain reaction, including the precise trap of key radicals intermediate by self-assembled [18C6·Na]⁺ cations. Compared to the sulfite solution, the 18C6/Na₂SO₃ absorbent increased its optimal absorption efficiency from 93.5% to 97% and extended its effective absorption time from 16 to 30 min. Furthermore, FT-IR, ¹H NMR, and a 1135-min continuous absorption demonstrated the promising recyclability of 18C6. Additionally, denitration performance under varied operating conditions was evaluated, and a macro-kinetic model based on multiple parameters was established, offering guidance for practical wet flue gas denitration (WFGD). This antioxidant method avoids additive consumption, utilizes often-overlooked alkali metal cations, and expands application prospects for aqueous absorbents.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"724 Pt 1","pages":"141062"},"PeriodicalIF":9.6,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148417401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the synergy of Interface and defects in V₂O₃/VN heterojunctions for high-performance aqueous zinc-ion batteries.","authors":"Dongfei Sun, Minghui Xue, Huanle Niu, Ni Zhang, Junlin Yang, Jingxin Zhao, Bingang Xu","doi":"10.1016/j.jcis.2026.141130","DOIUrl":"10.1016/j.jcis.2026.141130","url":null,"abstract":"<p><p>Aqueous zinc-ion batteries (AZIBs) represent promising candidates for large-scale energy storage owing to their inherent safety, low cost, and environmental friendliness. However, developing cathode materials that simultaneously achieve high capacity and long-term cycling stability remains a critical challenge. Herein, we report the rational design and synthesis of a series of Vanadium trioxide/Vanadium nitride (V₂O₃/VN) heterostructured composites through a controlled partial nitridation process using a vanadium-based metal-organic framework as a precursor. This strategy enables the in-situ formation of a conductive carbon matrix and the construction of an intimate heterointerface between V₂O₃ and VN. A key innovation lies in the precise tuning of the V₂O₃-to-VN ratio, which governs the heterostructure morphology, defect concentration, and resulting electrochemical properties. The optimized V₂O₃/VN composite leverages the complementary attributes of its constituents: the structural stability and high theoretical capacity of V₂O₃, along with the superior electrical conductivity and electrochemical activity of VN. Synergistic effects at the heterointerface not only facilitate rapid electron and ion transport but also effectively accommodate volume variations during repeated cycling. Moreover, the presence of oxygen vacancies enhances Zn²⁺ adsorption and diffusion kinetics. Therefore, the V₂O₃/VN cathode delivers a high specific capacity of 528 mAh g^-1 at 0.1 A g^-1, and retains 244 mAh g^-1 after 2000 cycles at 5 A g^-1, corresponding to a capacity fading rate of 0.025% per cycle. This work highlights the critical roles of component ratio optimization and interface engineering, providing a promising strategy for the development of advanced AZIB cathodes.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"724 Pt 1","pages":"141130"},"PeriodicalIF":9.6,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-doped polypyrrole for high-capacity aqueous zinc-ion batteries.","authors":"Bo Li, Peng Hei, Yulai Lin, Jianming Meng, Yuqing Wang, Lei Wang, Xiao-Xia Liu, Xiaoqi Sun, Weibin Cui, Yu Song","doi":"10.1016/j.jcis.2026.141125","DOIUrl":"10.1016/j.jcis.2026.141125","url":null,"abstract":"<p><p>Cathode materials for aqueous zinc-ion batteries (AZIBs) often encounter challenges related to low electronic conductivity and sluggish ion transport, particularly when using thick electrode materials. Here, we report for the first time the fabrication of an iodide and heptamolybdate dual-doped polypyrrole (PPy-I-Mo) cathode, prepared through an electrodeposition method for AZIBs. The redox-active dopants not only contribute additional capacity to the composite but also modulate the morphology and electronic structure of the polymer, thereby enhancing both ion and electron transport. Moreover, the strong interactions between heptamolybdate and the I-based species not only effectively confine the dopants within the PPy matrix, preventing counterion depletion, but also facilitate the redox kinetics of iodine. As a result, the PPy-I-Mo electrode, with a high mass loading of 125 mg cm^-2, achieves an exceptional areal capacity of approximately 7 mAh cm^-2, significantly surpassing the capacities of mono-doped PPy-Mo (0.83 mAh cm^-2) and PPy-I (2.07 mAh cm^-2). This performance outperforms other reported conducting polymer-based electrodes for AZIBs. Furthermore, this dual-doping strategy can be extended to fabricate other high-performance conducting polymers, such as poly(3,4-ethylenedioxythiophene) and polyaniline. These findings open new avenues for designing high-performance conducting polymers for advanced energy storage devices.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"724 Pt 1","pages":"141125"},"PeriodicalIF":9.6,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immunoelectroanalytical multiplexing of RNA methylation signatures to decode oncogenic point mutations in cancer cells.","authors":"Víctor Pérez-Ginés, Rebeca M Torrente-Rodríguez, Raquel Rejas-González, Ana Montero-Calle, María Pedrero, José M Pingarrón, Rodrigo Barderas, Susana Campuzano","doi":"10.1016/j.talanta.2026.130180","DOIUrl":"10.1016/j.talanta.2026.130180","url":null,"abstract":"<p><p>Epigenomic and epitranscriptomic alterations-particularly RNA methylations such as N⁶-methyladenosine (m6A), N⁵-methylcytosine (m5C), N¹-methyladenosine (m1A), and N⁷-methylguanosine (m7G)-are increasingly recognized as pivotal regulators in the pathobiology of colorectal cancer (CRC) and other highly prevalent disorders. Despite their growing clinical and biological relevance, rapid and robust electrochemical strategies enabling the single (m1A, m7G) or multiplexed quantification of these RNA modifications remain unavailable. Herein, we report an indirect competitive, four-analyte amperometric immunoassay that enables the simultaneous determination of m6A, m5C, m1A, and m7G. BSA-conjugated methylated synthetic nucleotides covalently attached to magnetic carboxylated microsized-beads (HOOC-MμBs) competed with freely methylated nucleotides in the target sample for specific anti-epimark detection antibodies. Thereafter, labeling with horseradish peroxidase (HRP)-conjugated secondary antibodies (Ab2-HRP) enabled amperometric readout at screen-printed carbon electrodes (SPCEs) for single or multiplexed transduction. The developed bioplatforms exhibited high selectivity, negligible cross-interference, and a significantly reduced assay time (30 min), supporting their integration into a robust multiplexed format. Application in CRC cellular scenarios, using only nanograms of total RNA, allowed differential profiling of basal and pathway-activated states across five cell lines, revealing distinct RNA methylation patterns associated with diverse biological and genetic backgrounds. Moreover, as proof of concept, an octuple-detection configuration was implemented for parallel analysis of the four methylations in two cell types, wild-type and harboring the clinically relevant KRAS G12V mutation, allowing the evaluation of associations between the target epimark expression levels and this oncogenic point mutation.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130180"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Colorimetric swab and turbidimetric sensing for dual-mode point-of-use testing of demeton pesticide in foods based on oxidase-like Cu₂O@Ag nanoprobe.","authors":"Yi Liu, Yinxia Yang, Jialin Liang, Lei Han, Qian Zhao, Jie Luo, Shi Gang Liu","doi":"10.1016/j.talanta.2026.130192","DOIUrl":"10.1016/j.talanta.2026.130192","url":null,"abstract":"<p><p>Dual-mode sensing can enhance detection reliability by cross-validating results from distinct signals. Herein, a colorimetric and turbidimetric dual-mode sensing platform based on Cu₂O@Ag nanozyme with robust oxidase-like activity is developed for point-of-use (POU) detection of demeton. The Cu₂O@Ag efficiently catalyzes the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB), producing concurrent absorbance and turbidity signals. Demeton blocks active sites and suppresses catalytic activity in a concentration-dependent manner. Based on the principle, two modes for POU testing of demeton are developed. The first mode is based on a smartphone-assisted colorimetric swab and shows a linear range of 50 - 4000 ng/mL with the detection limit of 0.190 ng/mL. The other is based on a portable turbidimeter and exhibits a linear detection range of 50 to 3000 ng/mL with a detection limit of 2.997 ng/mL. The approaches are successfully validated in real food samples including baby cabbage, lettuce, cilantro, and tea leaves. This work presents a rapid, low-cost, and instrument-flexible dual-mode sensing strategy for on-site analysis of demeton residue. Also, the dual-mode detection based on colorimetric and turbidimetric signals for the first time offers a novel insight for dual-mode sensing.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130192"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing spectral interpretability and band selection prior to prediction model development via CAKE.","authors":"Minh-Quan Nguyen, Mizuki Tsuta, Mito Kokawa","doi":"10.1016/j.talanta.2026.130168","DOIUrl":"10.1016/j.talanta.2026.130168","url":null,"abstract":"<p><p>A direct, singular causal relationship between the objective variable and spectral data underpins reliable and robust prediction models that avoid spurious correlations. However, machine learning models often lack causal interpretability due to their \"black-box\" nature. To address this, we developed the Causal Analysis via Kernel Estimation (CAKE), a framework that reveals single-component bands using only variables from the calibration model. CAKE employs an information-theoretic approach by calculating the differences in mutual information between variables and regression residuals to indicate causal direction. A Kernel Density Estimation (KDE) classifier further distinguishes causal structures prone to spurious correlations. The framework was optimized on simulated data and validated on real-world spectral measurements. Seven causal structures were constructed for the simulated data, while real-world data came from near-infrared and fluorescence spectroscopy of three-solvent mixtures (dimethyl sulfoxide, ethylene glycol, and glycerol). Three causality types - spectral bands with a single direct cause, hidden causes, and confounders - were distinctly characterized by density functions within the framework, enabling the accurate classification of all single-component bands into their respective causal structures. Compared with post-hoc approaches, such as external model validation and common variable selection indices, CAKE identifies reliable spectral bands that exclude spurious correlations across diverse spectroscopic applications while operating independently of the calibration process and requiring no prior knowledge of pure spectra. Although CAKE is designed as a pre-calibration method rather than a prediction-optimized variable selector, it achieves improved predictive accuracy, demonstrating that causal reliability and practical performance are not mutually exclusive.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130168"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multicomponent recognition and on-site detection of oral antidiabetic drugs based on a host-guest fluorescent sensor array.","authors":"Hong-Yuan Hu, Qing Tang, Qing Fan, Jin-Xian Luo, Nan Dong, Zhu Tao, Ying Huang","doi":"10.1016/j.talanta.2026.130165","DOIUrl":"10.1016/j.talanta.2026.130165","url":null,"abstract":"<p><p>Hypoglycemia, a serious complication of diabetes, requires prompt identification of its underlying cause. Unlike conventional lock-and-key methods, which generally require a dedicated sensor for each analyte, we constructed a supramolecular fluorescent sensor array for multiplex oral antidiabetic drug (OAD) detection using only two sensing units: cucurbit[8]uril (Q[8]) as the host, along with a synthesized bpep-Am derivative and palmatine as fluorescent probes. Upon introduction of OADs, competitive guest displacement generates differential fluorescence \"fingerprints\". In combination with linear discriminant analysis, the array fully discriminated five OADs (metformin, phenformin, buformin, rosiglitazone, and sitagliptin), with a detection limit as low as 0.218 μM, 100% classification accuracy in artificial urine and guinea pig serum, and >93% recovery for spiked sitagliptin and phenformin. The sensor array was further integrated into a smartphone-enabled portable device for rapid on-site visual quantification of sitagliptin. This strategy provides a promising tool for OAD screening and assessment of hypoglycemia etiology.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130165"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the maximum electrical power efficiency of a hydroelectric nanobubble-driven cell.","authors":"Francisco J Arias","doi":"10.1016/j.jcis.2026.140954","DOIUrl":"10.1016/j.jcis.2026.140954","url":null,"abstract":"<p><p>In recent decades, nanobubble technology has emerged as a disruptive approach with potential applications across a wide range of scientific and industrial fields. Although several theories have been proposed to explain the extraordinary longevity of nanobubbles-a behavior not predicted by classical models-this phenomenon remains the subject of active debate. Nevertheless, there is broad consensus that nanobubble stability primarily arises from strong surface electric charge associated with interfacial phenomena, leading to localized water dissociation in the vicinity of the nanobubble. The water dissociation driven by nanobubbles has prompted speculation regarding the possibility of power generation through a hydroelectric cell, potentially enabling an alternative long-term, large-scale energy storage pathway that has not yet been explored. However, despite its conceptual appeal, any quantitative estimation of the efficiency of such a system, if feasible at all, has not been established. Here, utilizing the linearized Poisson-Boltzmann (Debye-Hückel) approximation and first-order perturbations in the nanobubble surface potential, an analytical expression for the maximum efficiency of a hydroelectric nanobubble-driven cell is derived. It is shown that a maximum efficiency of  ≃ 12% can be achieved at best, with predicted current densities remaining within the same order of magnitude as those reported for conventional hydroelectric-cell systems based on nanoporous ferrites. The resulting efficiencies are sufficiently non-negligible to warrant further theoretical and experimental investigation.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"723 ","pages":"140954"},"PeriodicalIF":9.6,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148337292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A light-activated one-pot ERA/CRISPR-Cas12a assay for cost-effective dual-mode detection of HBV DNA.","authors":"Xuan Zhou, Lang Wang, XiaoZhen Peng, Mengzhao Liu, Yue Li, Fang Gui, Lanying Zhou, Zhongliang Deng","doi":"10.1016/j.talanta.2026.130329","DOIUrl":"10.1016/j.talanta.2026.130329","url":null,"abstract":"<p><p>Light-activatable CRISPR-Cas systems offer an effective strategy to overcome the kinetic incompatibility in one-pot nucleic acid assays; however, their practical application remains limited by high reagent cost, the lack of compatible reaction buffers, and reliance on instrument-dependent readout. In this work, we developed a cost-effective light-controlled one-pot ERA/CRISPR-Cas12a platform for rapid hepatitis B virus (HBV) DNA detection. NPOM-caged crRNA was employed to temporarily suppress Cas12a activity during amplification and to trigger target-dependent trans-cleavage by a brief 30 s UV irradiation. By replacing RPA with ERA, the per-reaction reagent cost of the one-pot assay was reduced from approximately US$6.0 to US$2.0, corresponding to a reduction of approximately 66.7%, while maintaining comparable analytical performance. In addition, a PEG-free unified buffer was established through systematic optimization, enabling efficient integration of ERA and Cas12a reactions in a sealed single-tube format. The proposed platform provided dual-mode readout through fluorescence and lateral flow assay (LFA), with a limit of detection of 1 copy μL^-1 and a total assay time of 30 min. Clinical evaluation using 79 serum samples showed a sensitivity of 100% for fluorescence readout and 96.3% for LFA, with excellent agreement with qPCR (Cohen's κ = 0.94 - 1.00). Owing to its low cost, high sensitivity, and operational simplicity, this platform represents a promising tool for rapid HBV molecular diagnosis in both centralized laboratories and resource-limited settings.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":" ","pages":"130329"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148676600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of phosphorus and cobalt co-modified tubular carbon nitride with dual reaction sites for boosted imidacloprid degradation.","authors":"Binyuan Chen, Hao Zeng, Ben Zhang, Jin Zheng, Ling Li, Zhanpeng Zhou, Rongdi Tang, Yaocheng Deng","doi":"10.1016/j.jcis.2026.140997","DOIUrl":"10.1016/j.jcis.2026.140997","url":null,"abstract":"<p><p>Polymeric carbon nitride demonstrates considerable potential for the degradation of imidacloprid (IMI) in aquatic environments; however, its practical application is limited by a scarcity of active sites and the rapid recombination of photogenerated charge carriers. To address these limitations, a phosphorus (P) and cobalt (Co) co-modified tubular carbon nitride photocatalyst (Co-PTCN) with dual reaction sites was successfully synthesized. This catalyst achieved 90% removal of IMI within one hour under visible light irradiation at pH 7.5. Comprehensive characterization confirmed that the tubular morphology promotes the formation of dual reaction sites, wherein Co sites functioning as oxidation centers and P sites serving as oxygen activation and reduction centers. The enhanced separation efficiency of photogenerated charge carriers was corroborated by theoretical calculations and transient photovoltage measurements. Proposed degradation pathways of IMI were elucidated, and toxicity predictions indicated a decreasing trend in toxicity throughout the degradation process. This work provides new perspectives for feasibly constructing dual-reaction-site photocatalysts and offers theoretical support for the degradation mechanisms of IMI.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"723 ","pages":"140997"},"PeriodicalIF":9.6,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148315063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}