化学最新文献

{"title":"Proof-of-concept chemometric approach for environmental forensic sourcing of crude oil samples using SPME-GC-MS.","authors":"Vidia A Gokool, Michelle Karpinsky, Kenneth G Furton, Lauryn E DeGreeff","doi":"10.1016/j.talanta.2024.127381","DOIUrl":"10.1016/j.talanta.2024.127381","url":null,"abstract":"<p><p>Environmental exposure to crude oil through seepage and spillage poses risks to the immediate environment and the broader ecosystem as areas along the oil distribution path are affected by the influx of crude petroleum as well as the environmental, economic, and civil unrest that accompanies it. There is a large financial burden associated with the lost resources, including the cost of rehabilitation, and the affected sources of revenue for communities affected by oil spills. As such, it is crucial to determine the responsible parties. This work outlines an environmental forensics approach to determining the source of an un-weathered crude oil sample. The researchers employed solid phase microextraction coupled with gas chromatography mass spectrometry (SPME-GC-MS) to capture and analyze the gaseous components emitted by crude oil samples sourced from five locations. Samples were analyzed using Spearman's rank correlation and 3D covariance analysis. Both chemometric approaches yielded optimal performance results with no misclassifications, true positive rate (TPR) = 100 % and false positive rate (FPR) = 0 %. The similarity metrics calculated by each test noted clear delineations between the values of same-source and differently sourced samples. The Spearman's rank correlation test and 3D covariance calculations both demonstrated the ability to correctly identify sample source origin in this dataset. The authors outline an approach to the future application of these tests and suggest their joint use in future crude oil sourcing endeavors.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"285 ","pages":"127381"},"PeriodicalIF":5.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142871008","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-mode colorimetric and chemiluminescence aptasensor for organophosphorus pesticides detection using aptamer-regulated peroxidase-like activity of TA-Cu.","authors":"Wenjie Jing, Qihao Shi, Shan Qiang, Yu Wang, Yizhuo Li, Teng Zhao, Yuan Li, Dingkuo Liu, Yihan Liu, Fufeng Liu","doi":"10.1016/j.talanta.2024.127410","DOIUrl":"10.1016/j.talanta.2024.127410","url":null,"abstract":"<p><p>The residues of organophosphorus pesticides (OPs) in food pose a huge threat to human health. Therefore, the development of detection methods with simple design and high sensitivity is urgently needed. Here, a colorimetric/chemiluminescence (CL) dual-mode aptasensor strategy with high selectivity and sensitivity for detecting Parathion-methyl (PM) was designed based on aptamer-regulated nanozyme activity. The Parathion-methyl specific aptamer was anchored onto the surface of trimesic acid-Cu (TA-Cu) nanozyme, which can regulate the catalytic ability of TA-Cu nanozyme towards substrates and also serve as a specific recognition unit for PM. In the presence of PM, the aptamers bind to PM and detach from the surface of TA-Cu nanozyme, which effects the catalytic ability of TA-Cu nanozyme towards substrates. Based on the above experimental phenomena, a colorimetric/CL dual-mode aptasensor method for PM was developed, with the linear ranges of 0.01-20 and 1-100 ng/mL, the limit of detections of 0.004 and 0.45 ng/mL, respectively. More importantly, compared with most single mode analysis methods, this dual-mode sensing system can conduct self-inspection by comparing the detection results of each mode, thus improving the reliability of the detection results.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"285 ","pages":"127410"},"PeriodicalIF":5.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142871006","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":"In-situ growing carbon nanotubes reinforced highly heat dissipative three-dimensional aluminum framework composites.","authors":"Bin Wang, Yaotian Yan, Bin Qin, Zhenyu Ye, Yong Xia, Zilong Zhang, Xiaohang Zheng, Jian Cao, Junlei Qi","doi":"10.1016/j.jcis.2024.12.125","DOIUrl":"10.1016/j.jcis.2024.12.125","url":null,"abstract":"<p><p>The demand for lightweight heat dissipation design in highly miniaturized and portable electronic devices with high thermal density is becoming increasingly urgent. Herein, highly thermal conductive carbon nanotubes (CNTs) reinforced aluminum foam composites were prepared by catalyst chemical bath and subsequent in-situ growth approach. The dense CNTs show the intertwined structure features and construct high-speed channels near the surface of the skeletons for efficient thermal conduction, promoting the transport efficiency of heat flow. The regulation of the process leads to a proportion increase in the (1 1 0) crystal plane of the aluminum substrate. The calculation results of non-equilibrium molecular dynamics (NEMD) demonstrate that (1 1 0) crystal plane is conducive to enhancing thermal boundary conductance thus the desirable equivalent thermal conductivity is obtained in the model system. Moreover, the phonon behaviors at the heterointerface observed in phonon density of states spectrums (PDOS) show that the interface system with (1 1 0) crystal plane possesses the superior coupling effect suggesting the brilliant transmission capacity. The theoretical results of NEMD and PDOS provide a microscopic explanation for the high thermal conductivity observed in the prepared composites with a high content of Al (1 1 0) crystal plane. The composites exhibit a thermal conductivity of 30.63 W·m^-1·K^-1, improved by ∼300 % as compared to unmodified aluminum foam. The cooling efficiency of 28.63 % obtained in the composites indicates outstanding heat dissipative performance among other similar works. The composites prepared in the work could hold bright prospects for the thermal management field.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"683 Pt 1","pages":"799-817"},"PeriodicalIF":9.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870814","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":"Interfacial hydrogen bonds induced by porous FeCr bimetallic atomic sites for efficient oxygen reduction reaction.","authors":"Jingwen Wang, Qing Zhang, Lin Yang, Chuangang Hu, Zhengyu Bai, Zhongwei Chen","doi":"10.1016/j.jcis.2024.12.119","DOIUrl":"10.1016/j.jcis.2024.12.119","url":null,"abstract":"<p><p>Interfacial hydrogen bonds are pivotal in enhancing proton activity and accelerating the kinetics of proton-coupled electron transfer during electrocatalytic oxygen reduction reaction (ORR). Here we propose a novel FeCr bimetallic atomic sites catalyst supported on a honeycomb-like porous carbon layer, designed to optimize the microenvironment for efficient electrocatalytic ORR through the induction of interfacial hydrogen bonds. Characterizations, including X-ray absorption spectroscopy and in situ infrared spectroscopy, disclose the rearrangement of delocalized electrons due to the formation of FeCr sites, which facilitates the dissociation of interfacial water molecules and the subsequent formation of hydrogen bonds. This process significantly accelerates the proton-coupled electron transfer process and enhances the ORR reaction kinetics. As a result, the catalyst FeCrNC achieves a remarkable half-wave potential of 0.92 V and exhibits superior four-electron selectivity in 0.1 M KOH solution. Moreover, the zinc-air battery assembled by FeCrNC demonstrates a high power density of 207 mW cm^-2 and negligible degradation over 240 h at a current density of 10 mA cm^-2.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"683 Pt 1","pages":"742-751"},"PeriodicalIF":9.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870855","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":"Exploring the photothermal effect in the photocatalytic water splitting over Type II ZnIn₂S₄/CoFe₂S₄ composites.","authors":"Gege He, Junsheng Wang, Xiaozhen Lv, Shun Lu","doi":"10.1016/j.jcis.2024.12.137","DOIUrl":"10.1016/j.jcis.2024.12.137","url":null,"abstract":"<p><p>Hydrogen is increasingly acknowledged as a viable alternative to traditional fossil fuels. However, the photothermal properties of CoFe₂S₄, a photocatalyst displaying metal-like behavior, have not been adequately explored in the context of photocatalytic H₂ generation. To improve photocatalytic hydrogen evolution, it is crucial to understand how to expedite the transfer of photogenerated electrons and the dissociation of H-OH bonds for enhanced hydrogen ion release. Herein, a type-II heterostructure was constructed between CoFe₂S₄ nanosheets and ZnIn₂S₄ nanoparticles, a non-precious metal photocatalyst, which effectively separates photogenerated carriers and holes. More importantly, the photothermal effect and localized surface plasmon resonance (LSPR) effects induced by CoFe₂S₄ improved the sluggish kinetics of water dissociation. The CoFe₂S₄/ZnIn₂S₄-5 photocatalyst achieved H₂ evolution rate of 6.84 mmol·g^-1·h^-1, and an apparent quantum efficiency of 15.6 % at 400 nm, significantly enhancing the efficiency of photocatalytic splitting for hydrogen production. This work advances the application of metal CoFe₂S₄ in solar-to-fuel conversion and offers valuable insights for designing semiconductor-based photothermally assisted photocatalytic systems.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"683 Pt 1","pages":"901-909"},"PeriodicalIF":9.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875678","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":"Defective UIO66 metal-organic framework nanoparticles assisted by cascade isothermal amplification technology for the detection of aflatoxin B1.","authors":"Yanyan Shao, Qian Tao, Luyao Shao, Jing Bi, Qian Wang, Zhigang Wang, Xuan Sun","doi":"10.1016/j.talanta.2024.127411","DOIUrl":"10.1016/j.talanta.2024.127411","url":null,"abstract":"<p><p>Aflatoxin B1 (AFB1) exhibits significant toxicity and pose a serious threat to food safety, environmental hygiene, and public health even in trace amounts. Hence, the development of a rapid, accurate, and sensitive detection technology has become a pivotal aspect of ensuring control standards. In this study, we introduce the UIO66 and two defective dichloroacetic acid@UIO66 (DCA@UIO66, DU) metal-organic framework nanoparticles, named DU1 and DU2, characterized by different defect levels. It is noteworthy that DU1 exhibits superior DNA sensing capability compared to UIO66 and DU2. With a fluorescence quenching efficiency of 92.66 % and a recovery efficiency of 1256.75 %, DU1 demonstrates the substantial potential in the detection field. Furthermore, we employ cascade isothermal amplification to assist DU1-mediated fluorescence sensors in detecting AFB1. AFB1 is efficiently identified through an aptamer competition process facilitated by magnetic nanoparticles, which initiates the exponential amplification triggered rolling circle amplification reaction, and converts trace amounts of toxin signal into a large number of long single-stranded DNA molecules. Upon recognition of the amplification product by the fluorescent probe on DU1, a more stable double-stranded DNA is formed and leaves the surface of DU1, leading to a significant change in fluorescence intensity. This method exhibits acceptable sensitivity, with a detection limit of 0.09 pg mL^-1 and a wide detection range spanning from 0.2 pg mL^-1 to 20 pg mL^-1. Additionally, this assay exhibits satisfactory specificity and high accuracy in practical sample applications. Our proposed method offers a solid theoretical framework and technical backing, thereby facilitating the establishment of a new generation of mycotoxin detection standards.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"285 ","pages":"127411"},"PeriodicalIF":5.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870995","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":"Cobalt nanoparticles decorated hollow N-doped carbon nanospindles enable high-performance lithium-oxygen batteries.","authors":"Xueyun Yang, Jianhao Zhu, Yingli Wang, Jiacun Wang, Yajuan Li, Yuanxiang Gu, Qingliang Lv, Lei Wang","doi":"10.1016/j.jcis.2024.12.104","DOIUrl":"10.1016/j.jcis.2024.12.104","url":null,"abstract":"<p><p>Despite the ultrahigh theoretical energy density and cost-effectiveness, aprotic lithium-oxygen (Li-O₂) batteries suffer from slow oxygen redox kinetics at cathodes and large voltage hysteresis. Here, we well-design ultrafine Co nanoparticles supported by N-doped mesoporous hollow carbon nanospindles (Co@HCNs) to serve as efficient electrocatalysts for Li-O₂ battery. Benefiting from strong metal-support interactions, the obtained Co@HCNs manifest high affinity for the LiO₂ intermediate, promoting formation of ultrathin nanosheet-like Li₂O₂ with low-impedance contact interface on the Co@HCNs cathode surface, which facilitates the reversible decomposition upon charging. The mesoporous hollow nanospindles can provide abundant electron/ions transport channels to synergistically accelerate the formation and decomposition of discharge products. The Li-O₂ battery based on Co@HCNs displays remarkably reduced discharge/charge polarization of 0.92 V, impressive rate performance, and stable operation for 250 cycles. This work will provide a new avenue to design advanced oxygen electrocatalysts for high-performance Li-O₂ battery.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"683 Pt 1","pages":"926-933"},"PeriodicalIF":9.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875671","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-signal, one-step simultaneous monitoring of genetic mutation in multiple gene regions using Fe₃O₄@Au and MOF.","authors":"Shuna Ren, Xuming Zhao, Shaohui Geng, Xiaotong Wang, Tongtong Ye, Lihua Chen","doi":"10.1016/j.talanta.2024.127384","DOIUrl":"10.1016/j.talanta.2024.127384","url":null,"abstract":"<p><p>Genetic testing plays a crucial role in guiding individualized medication, however, detecting fine structural mutations in genes continues to present significant challenges. This study introduces a dual-signal fluorescence system, termed Fe₃O₄@Au@PEG@P1+MOF@P₂, that integrates magnetic separation of Fe₃O₄@Au with NH₂-MIL-88 (MOF) catalysis. Initially, the specimen (T1/T2) facilitated the formation of a specific complex (Fe₃O₄@Au@PEG@P1+T1/T2) with Fe₃O₄@Au@PEG@P1. The subsequent addition of Hoechst-33258 produced a robust fluorescence signal at 460 nm, enabling the identification of mutations in the first gene regions. Following this, MOF@P₂ was introduced to activate the catalyst through P2 pairing with T2. The complex Fe₃O₄@Au@PEG@P1+T1/T2+P2+Hoechst-33258 was subsequently isolated using an external magnetic field. Upon adding OPD, fluorescent DAP was detected at 560 nm, allowing for the identification of mutations in the second gene regions. The research demonstrated that the variation in fluorescence signals increased with a higher number of base substitutions and deletion mutations, with deletion mutations resulting in a notably greater alteration rate compared to substitution mutations. Interestingly, triple base substitution mutations, characterized by lower clustering of non-continuous mutations, produced a more pronounced change in fluorescence signal than did a higher clustering of continuous mutations (codon mutations). This single-step methodology effectively differentiates among the number and types of mutations across multiple gene regions while assessing the degree of mutation clustering. Overall, this technology significantly enhances the current capabilities for detecting fine structural mutations in genes. Furthermore, the approach exhibits high sensitivity in detecting concentrations of T1 and T2 ranging from 10^-15 M to 10^-9 M, with detection limits of 0.19 fM and 0.24 fM, even in 5 % serum samples.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"285 ","pages":"127384"},"PeriodicalIF":5.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862806","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":"Copper-based fluorescent nanozyme used to construct a ratiometric sensor for visual detection of thiophanate methyl.","authors":"Shuyi Liu, Hong Yu, Shuyun Zhu, Xian-En Zhao","doi":"10.1016/j.talanta.2024.127417","DOIUrl":"10.1016/j.talanta.2024.127417","url":null,"abstract":"<p><p>Although nanozyme has shown great potential in designing fluorescent assays for pesticide residue, most of them are based on single emission, thus affecting the detection accuracy. Herein, a copper-based fluorescent nanozyme (Cu-BH) synthesized with dual-ligand, integrating fluorescence and oxidase-mimic into one spherical nanomaterial, was used firstly to establish a ratiometric approach for visual detection of thiophanate methyl (TM). Cu-BH possesses excellent oxidase-like activities, triggering the oxidation of colorless o-phenylenediamine (OPD) into yellow luminescent products (oxOPD, λem = 564 nm). Besides, the ligand of 2-amino-1,4-benzene-dicarboxylic acid imparts Cu-BH blue fluorescence (λem = 425 nm), which is quenched by oxOPD via inner filtration effect (IFE). The introduction of TM can prevent not only the oxidase-like activity remarkably but also the intrinsic luminescence of Cu-BH slightly because of the complexation of TM with Cu²⁺. As a result, the fluorescence intensity at 564 nm and 425 nm presents a significant decrease and a slight increase, respectively, producing a ratiometric fluorescent signal (F₄₂₅/F₅₆₄). Therefore, a novel ratiometric fluorescent strategy has been proposed to detect TM ranging from 0.1 to 100 μM with detection limit of 0.03 μM (S/N = 3). Besides, visual detection of TM can be achieved by RGB reading with the assistance of smartphone owing to the color variation from yellow to blue. This fluorescent nanozyme-based ratiometric strategy provides a specific method for the detection of TM in food samples.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"285 ","pages":"127417"},"PeriodicalIF":5.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870993","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 photothermal MXene-derived heterojunction for boosted CO₂ reduction and tunable CH₄ selectivity.","authors":"Yixiang Zhao, Zhen Wang, Weirui Chen, Xi Wang, Yiming Tang, Laisheng Li, Jing Wang","doi":"10.1016/j.jcis.2024.12.108","DOIUrl":"10.1016/j.jcis.2024.12.108","url":null,"abstract":"<p><p>We report here a Bi₂WO₆/Ti₃C₂T_x@Ag (BT@Ag) photothermal photocatalyst for efficient CO₂ reduction with tunable CH₄ selectivity. Incorporation of Ti₃C₂T_x MXene creates well-defined heterointerfaces between Bi₂WO₆ and Ti₃C₂T_x and converts thermal energy upon light illumination via photothermal effect, which contributes to a mitigation of the recombination of photo-induced charge carries for a high electron mobility. Density functional theory calculations substantiate that Ti₃C₂T_x functions as the adsorption site and active center where the transferred electrons are effectively involved in CO₂ reduction for enhanced CH₄ selectivity. Moreover, the in situ deposited Ag nanoparticles demonstrate an exceptional surface plasmon resonance effect, giving rise to additional hot electrons that further benefits the CH₄ generation.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"683 Pt 1","pages":"934-941"},"PeriodicalIF":9.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875519","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}