The Royal Society of Chemistry最新文献

{"title":"Tribocatalytic degradation of concentrated methyl orange solutions by BiFeO3 nanoparticles prepared through a sol–gel method","authors":"Yanhong Gu, Weiying Zhang, Yuen Li, Kelan Wang, Lanlan Ge, Xianghui Zhang, Jianguo Zhao, Zhenjiang Shen, Wanping Chen and Yaohua Hu","doi":"10.1039/D5RA02423D","DOIUrl":"https://doi.org/10.1039/D5RA02423D","url":null,"abstract":"<p >With a relatively narrow bandgap of around 2.0 eV, BiFeO<small>₃</small> (BFO) nanoparticles have been extensively investigated as an appealing visible-light photocatalyst. In this study, BFO nanoparticles prepared through a sol–gel method were explored as a tribocatalyst to degrade methyl orange (MO) solutions. With BFO nanoparticles stimulated through magnetic stirring using Teflon magnetic rotary disks, as much as 100% of 10 mg per L MO and 99% of 30 mg per L MO solutions were degraded after 20 min and 160 min of magnetic stirring, respectively. For reference, TiO<small>₂</small> nanoparticles (P25) were stimulated under the same conditions and degraded 97% of 10 mg per L MO and 97% of 30 mg per L MO solutions after 150 min and 540 min of magnetic stirring, respectively. The calculated MO degradation rate constants for BFO at concentrations of 10 mg per L and 30 mg per L were 4.94 h<small>⁻¹</small> and 1.19 h<small>⁻¹</small>, respectively, while the corresponding values for P25 were 0.86 h<small>⁻¹</small> and 0.40 h<small>⁻¹</small>, respectively. Free radical trapping experiments showed that positive holes are by far the most important active species in the tribocatalytic degradation of MO by BFO. These findings suggest that in addition to its versatile applications, multiferroic BFO is promising for converting mechanical energy into chemical energy through tribocatalysis.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 28","pages":" 23089-23096"},"PeriodicalIF":3.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02423d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558045","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":"Selective production of a jet fuel fraction through hydrocracking of n-heptadecane using Pt-supported β-zeolite-Al2O3 composite catalysts†","authors":"Kosuke Murata, Yugo Nishiura, Shunma Mitsuoka, Mio Horibe, Tadanori Hashimoto, Ning Chen, Yuki Jonoo, Sho Kawabe, Keita Nakao and Atsushi Ishihara","doi":"10.1039/D5RA02332G","DOIUrl":"https://doi.org/10.1039/D5RA02332G","url":null,"abstract":"<p >Hydrocarbon fuels can be produced from a wide range of carbonaceous materials, including biomass and waste plastics, through the Fischer–Tropsch (FT) process. As sustainable aviation fuel (SAF) becomes increasingly important, selective production of a jet fuel fraction from FT wax is required; however, this has not yet been achieved. In this study, hydrocracking of <em>n</em>-heptadecane (<em>n</em>-C17) as a model diesel fuel fraction of FT wax was estimated to obtain a jet fuel fraction selectively using Hβ-zeolite-Al<small>₂</small>O<small>₃</small> composite-supported Pt catalysts. The Hβ-zeolite (25 wt%, SiO<small>₂</small>/Al<small>₂</small>O<small>₃</small> = 100)-Al<small>₂</small>O<small>₃</small> (60 wt%)-binder (alumina-sol, 15 wt% as Al<small>₂</small>O<small>₃</small>) composite-supported Pt (0.5 wt%) catalyst (0.5Pt/β(100)60A) was tested for hydrocracking of <em>n</em>-heptadecane using a fixed-bed flow reactor under the following conditions: 0.5 MPa H<small>₂</small> pressure, H<small>₂</small> 300 mL min<small>⁻¹</small>, WHSV 2.3 h<small>⁻¹</small> and 2 g catalyst weight. After hydrocracking of <em>n</em>-C17 to form gaseous hydrocarbons at 300 °C without pre-reduction of 0.5Pt/β(100)60A, the reaction was performed at 250 °C. A conversion of 97% and a selectivity of 79% for the C8–C14 fraction of the jet fuel range were achieved. The sum of the selectivity for the C7 and C8 fractions was higher than 50%. To confirm reproducibility, when the hydrocracking of <em>n</em>-C17 using the catalyst pre-reduced at 270 °C was performed at 300–304 °C, a conversion of 93% and a selectivity of 55% for C8–C14 were achieved at 302 °C, with high selectivity for C8 and C9, although significant amounts of gaseous products were observed simultaneously. Finally, when the hydrocracking of <em>n</em>-C17 using a catalyst pre-reduced at 310 °C was performed at 300–308 °C, a conversion of 99% and a selectivity of 63% for C8–C14 were achieved at 308 °C, and the selectivity for gaseous products reduced to 16%. However, the high selectivity for C8 and C9 was lost, and the same amount of each fraction of C8–C12 was simultaneously observed. It was suggested that the high selectivity of the β-zeolite-containing catalyst for the C8 and C9 fractions could be attributed to C–H bond activation of the carbon at position 9 of <em>n</em>-C17 on reduced Pt within the micropores of β-zeolite.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 29","pages":" 23165-23173"},"PeriodicalIF":3.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02332g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558048","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":"Analysis of pyrolysis component variations in three azo compounds using headspace gas chromatography-mass spectrometry (HS-GC-MS).","authors":"Jinkun Liu, Zhanfang Liu, Jun Zhu, Guannan Zhang, Yajun Li, Zhenwen Sun, Hong Zhou, Zheng Zhou, Xianhe Deng, Dong Han, Yao Liu","doi":"10.1039/d5ay00739a","DOIUrl":"https://doi.org/10.1039/d5ay00739a","url":null,"abstract":"<p><p>As industrial explosive hazardous chemicals, 2,2'-azobis(2-methylpropionitrile) (AIBN), 2,2'-azodi(2-methylbutyronitrile) (AMBN) and 2,2'-azobis(2,4-dimethyl)valeronitrile (ABVN) have caused multiple explosion accidents. In this study, headspace gas chromatography-mass spectrometry (HS-GC-MS) was used to analyze the differences in pyrolysis products of these compounds under gradient temperatures from 60 to 150 °C and aerobic conditions, aiming to provide methodological support for microphysical evidence identification in forensic science. The results showed that with the increase of temperature, the chromatographic peak areas and numbers of the three compounds generally increased. Violent reactions occurred at 80-90 °C, and the reactions ended at approximately 150 °C. Through mass spectrometry matching, retention index (RI), and fragment ion verification, 40 pyrolysis products (including nitriles, ketones, <i>etc.</i>) were identified, among which some products appeared specifically in certain temperature intervals. Twelve differential components (VIP ≥ 1, <i>p</i> < 0.05) were screened out by principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA), and the Fisher discriminant model constructed based on these components achieved a 100% classification accuracy for unknown samples. This study reveals the temperature dependence and species specificity of the pyrolysis behavior of azo compounds, provides a novel pyrolysis product fingerprint-based analytical method for the forensic identification of trace evidence at explosion scenes, and is expected to improve the traceability accuracy of hazardous chemicals in complex scenarios.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying mechanical opacity as a novel indicator for single-cell phenotyping <i>via</i> integrated dynamic mechanical compression and impedance flow cytometry.","authors":"Shan-Shan Li, Chun-Dong Xue, Si-Yu Hu, Yong-Jiang Li, Xu-Qu Hu, Zhuo Yang, Kai-Rong Qin","doi":"10.1039/d5lc00489f","DOIUrl":"https://doi.org/10.1039/d5lc00489f","url":null,"abstract":"<p><p>A comprehensive understanding of cellular mechanical heterogeneity is essential for identifying phenotypic variations. Impedance flow cytometry offers a high-throughput, label-free approach to assess single-cell electrical properties, yet current methods focus primarily on undeformed cells and overlook mechanical perturbations that may alter cytoskeletal structure and membrane behavior. Here, we present an integrated system that combines controlled mechanical compression with impedance measurement to quantify mechanical opacity-an electrical metric reflecting membrane permeability under dynamic deformation. This parameter correlates with cytoskeletal integrity and reveals how mechanical stimuli influence electrical responses. Theoretical modeling shows that membrane permittivity and conductivity critically shape frequency-dependent impedance, supporting the use of dual-frequency (500 kHz and 5 MHz) measurements to probe both intra- and extracellular properties. We define a four-parameter feature set (<i>R</i>_squ, <i>R</i>_sti1, <i>R</i>_sti2, <i>R</i>_relax) to capture impedance changes during deformation and relaxation, offering a compact and interpretable mechanical signature. Using this system, we demonstrate distinct mechanical opacity profiles among three human cancer cell lines (HeLa, SW1990, BxPC-3), reflecting their inherent biomechanical differences. Fluorescence assays confirm that lower mechanical opacity corresponds to increased membrane permeability, linking electrical measurements to underlying structural changes. Our work establishes mechanical opacity as a dynamic, label-free marker for single-cell mechanics, bridging mechanical stimulation and electrical detection. This approach expands the capability of impedance flow cytometry for applications in cell classification, drug screening, and disease diagnostics.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a novel optical sensor for the determination of cadmium based on the immobilization of β-2-hydroxybenzyl-5-chloro-2-hydroxyazastyrene on an agarose membrane.","authors":"Muneera Alrasheedi, Ahmed H Alanazi, Amnah Al Zbedy, Alaa M Younis, Alaa S Amin","doi":"10.1039/d5ay00817d","DOIUrl":"https://doi.org/10.1039/d5ay00817d","url":null,"abstract":"<p><p>An optode featuring high selectivity was prepared for cadmium detection <i>via</i> chemically binding β-2-hydroxybenzyl-5-chloro-2-hydroxyazastyrene (HCHAS) onto a clear agarose membrane. Colorimetric analysis of complexation between HCHAS and various metal ions at pH 2.75 revealed that the Cd²⁺ complex exhibited a markedly higher stability constant than others. As a result, HCHAS was applied as a suitable ionophore for fabricating a Cd²⁺-selective optode, <i>via</i> chemically anchoring it onto a transparent agarose matrix. The immobilization parameters were optimized and the resulting optode represented a conspicuous color transition from yellow to purple as a result of increasing Cd²⁺ concentrations in a pH 2.75 buffered solution. Detailed investigations were conducted to assess the influence of pH, ionophore loading, ionic strength, stirring conditions, and reaction duration on the optode's performance. A strong linear relationship was observed over the 4.0-140 ng mL^-1 concentration range, with <i>R</i>² values of 0.9882 and 0.9990, respectively. The high sensitivity of the method was demonstrated by the molar absorptivity and Sandell sensitivity, evaluated at 5.11 × 10⁶ L mol^-1 cm^-1 and 0.002 ng cm^-2, respectively. Furthermore, Cd²⁺ detection was not considerably influenced by the existence of various potentially interfering ions at concentrations 500-fold higher. The fabricated optode was effectively utilized for the quantification of cadmium ions in fortified food, environmental and biological specimens.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differences and regulation of self-trapped luminescence in one-dimensional Pb-based and Sn-based perovskites.","authors":"Jun Luo, Zhi-Ming Luo, Biao Liu, Jun-Liang Yang, Meng-Qiu Cai","doi":"10.1039/d5cp00619h","DOIUrl":"https://doi.org/10.1039/d5cp00619h","url":null,"abstract":"<p><p>One-dimensional (1D) perovskites have garnered significant interest due to their structural stability and self-trapped emission, with Sn-based and Pb-based perovskites being the primary focus. However, the reasons underlying the similarities and differences in the luminescent properties of these two types of perovskites remain unexplored in a systematic manner. Moreover, their properties can be influenced by external factors such as humidity, temperature, and illumination, which may induce subtle lattice expansions or contractions. In this study, we employ density functional theory (DFT) calculations to systematically investigate the similarities and differences in the optical properties and structural stability of 1D perovskites (C₄N₂H₁₄)PbBr₄ and (C₄N₂H₁₄)SnBr₄, as well as the effects of strain on these materials. Our results reveal that the molecular dissociation energy is higher for Pb-based perovskites than for their Sn-based counterparts, and both systems show increasing dissociation energies under greater lattice size. Under strain conditions, both the absorption and emission energies show a regular variation. This trend is more pronounced in Sn-based perovskites, whose optical characteristics are more sensitive to strain, indicating a higher degree of tunability. This enhanced sensitivity is attributed to the more active lone-pair electrons in Sn-based perovskites, inducing stronger lattice distortions and electron-phonon coupling. Furthermore, strain engineering can effectively modify the carrier mobility, optical absorption, and transition dipole moment of 1D perovskite materials, enabling improvements in both phosphor-based luminescence and electroluminescent applications.</p>","PeriodicalId":99,"journal":{"name":"Physical Chemistry Chemical Physics","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strategies and Tactics for Subcellular Targeting of Small Molecule Zinc Sensors.","authors":"William K McCarthy, Jason M Mrosla, Brian Pallares, Jacob M Goldberg","doi":"10.1093/mtomcs/mfaf024","DOIUrl":"https://doi.org/10.1093/mtomcs/mfaf024","url":null,"abstract":"<p><p>Zinc(II) ions play manifold roles in human health; dysregulation of zinc homeostasis has been implicated in a number of diseases and pathological conditions. Because zinc(II) is spectroscopically silent, it cannot be detected directly by conventional fluorescence microscopy. As a result, investigators seeking to image zinc(II) in biological systems frequently turn to small-molecule fluorescent sensors that selectively respond to the presence of the ion. This tutorial review describes methods for delivering such small-molecule probes to discrete subcellular locales. Attention is given to the preparation of conjugates in which well-characterized sensors are tethered to molecular homing moieties that accumulate in particular organelles or other compartments. Hybrid approaches that entail enzyme-mediated localization of synthetic constructs, as well as other novel techniques, are also discussed. The various fluorescent probe targeting methods described here enable opportunities for new discoveries in zinc biology.</p>","PeriodicalId":89,"journal":{"name":"Metallomics","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the influence of different factors on the direct treatment of high turbidity water by microfiltration processes","authors":"Xiaosan Song, Ping Li, Qingchao Shen, Wenxuan Wei and Hairong Yan","doi":"10.1039/D5RA01817J","DOIUrl":"https://doi.org/10.1039/D5RA01817J","url":null,"abstract":"<p >Currently, traditional high turbidity water treatment technologies (coagulation–sedimentation–filtration) face issues such as non-compliant effluent quality, sediment compaction, and poor sludge discharge. Meanwhile, membrane filtration technology suffers from severe membrane fouling in high turbidity water treatment. Therefore, the development of green and low-carbon high turbidity water treatment technologies is urgently needed. This study employs microfiltration to directly filter high turbidity water, investigating turbidity, filtration methods, and transmembrane pressure difference to elucidate the mechanisms of mitigating membrane fouling in high turbidity water treatment. The results indicate that both excessively high and low influent turbidity are detrimental to high turbidity water treatment. Low turbidity fails to effectively protect the membrane, exacerbating membrane fouling, while high turbidity leads to excessive cake layer thickness, reducing membrane flux. Therefore, the optimal treatment turbidity must be determined based on the specifications of the experimental setup. In this study, the optimal treatment turbidity is 900 NTU. Under constant pressure conditions, cross-flow filtration effectively controls the thickness of the filter cake layer, mitigates membrane fouling, and maintains a high membrane flux. When the influent turbidity is 900 NTU, the membrane flux recovery rate and filtration flux are 80.14% and 0.9077 m h<small>⁻¹</small>, respectively, with irreversible membrane fouling being only 0.97 × 10<small>¹⁰</small> m<small>⁻¹</small>. At a constant influent turbidity, higher transmembrane pressure difference increases the filtration flux but exacerbates membrane fouling. When the pressure increases from 6.67 kPa to 33.33 kPa, irreversible membrane fouling increases by 27.97%, while the filtration flux increases by 116.91%. At a pressure of 13.33 kPa, although the filtration flux is 56.83% of that at 33.33 kPa, the irreversible membrane fouling is only 62.25%. Therefore, this study identifies 13.33 kPa as the optimal transmembrane pressure difference. The Hermia model revealed that transmembrane pressure difference was the primary factor aggravating membrane fouling. Finally, through dosing FeCl<small>₃</small> as a coagulant for cake layer regulation, the cake layer structure formed at 15 mg per L dosage showed optimal pollutant interception and removal efficiency: humic acid (HA) removal efficiency reached 75.86% in actual water sources with 79.06% flux recovery rate; simulated feed water achieved 77.44% HA removal with 84.31% flux recovery rate. This study aims to provide reference for microfiltration processes in direct treatment of high-turbidity water.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 28","pages":" 22699-22715"},"PeriodicalIF":3.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01817j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536760","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":"Targeting liposomes and an accelerated CRISPR system for selective imaging of miR-21 in cells.","authors":"Wenyue Zhang, Mengting Wu, Qingqing Zhang, Xibin Chen, Yingshu Guo","doi":"10.1039/d5ay00619h","DOIUrl":"https://doi.org/10.1039/d5ay00619h","url":null,"abstract":"<p><p>This study demonstrates a liposome-targeted and accelerated CRISPR strategy for specific response of miR-21 within MCF-7 cells. Targeting was achieved with the help of modification of the MUC1 aptamer. MnO₂ NS could be used as both a delivery vehicle and an accelerator for the CRISPR system, and finally to achieve spatially selective imaging of miR-21.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile and highly sensitive nitrate ion detection <i>via</i> an electrochemical sensor based on a poly 1,8-diaminonaphthalene and copper oxide particle film.","authors":"Saad Benhaiba, Anas El Attar, Ouissal Salhi, Badr Bouljoihel, Charafeddine Jama, Soad Youssefi, Amine Ezzahi, Mama El Rhazi","doi":"10.1039/d5ay00655d","DOIUrl":"https://doi.org/10.1039/d5ay00655d","url":null,"abstract":"<p><p>Excessive nitrate accumulation in soil and water has become a critical environmental concern, threatening ecosystems and public health. This drives the need for designing new electrochemical nitrate sensors based on novel electroactive materials. In this work, we synthesized a hybrid film material composed of poly 1,8-diaminonaphthalene and copper oxide particles electrodeposited on the surface of a carbon paste electrode (Cu₂O-CuO/poly 1,8-DAN/CPE). The electrodeposition of the polymer was conducted in galvanostatic mode at a positive current, followed by the electrodeposition of copper in potentiostatic mode at a negative potential. The polymeric film obtained through this facile electropolymerization method showed a uniform dispersion of copper particles and could improve the mechanical stability of the fabricated sensors, thereby leading to a low detection limit of nitrate ions. The Cu₂O-CuO/poly 1,8-DAN/CPE was prepared in just 3 min in both the galvanostatic and potentiostatic mode. The developed sensor exhibited a good electrochemical performance for nitrate ions, with a linear range from 2 to 200 μM, strong stability, high reproducibility, and a low detection limit of 0.5 μM. This work revealed that the deposition of polymer can be applied as a promising material in new applications, such as water denitrification.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}