{"title":"Preparation and electrochemical performance of Schiff base polymers (DATP) from 1,4-diaminoanthraquinone and terephthalaldehyde","authors":"Qing Han, Zhibo Li, Mengyuan He, Zhengwen Wei, Shuhao Song, Jiacheng Wang, Wei Wang","doi":"10.1007/s10008-025-06273-6","DOIUrl":"10.1007/s10008-025-06273-6","url":null,"abstract":"<div><p>This study proposes a simple method for preparation Schiff base polymers (DATP) and its metal complexes (M-DATPs, M = Cu<sup>2+</sup>, Fe<sup>2+</sup>) as electrode materials for supercapacitors. The condensation reaction involves mixing 1,4-diaminoanthraquinone, terephthalaldehyde, and metal chlorides in trifluoroacetic acid at room temperature. M-DATPs possess larger surface area, unique morphology, and suitable conductivity in comparison with DATP. The electrochemical performance of the materials was evaluated in a 6 mol L<sup>−1</sup> KOH electrolyte using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). And Cu-DATPs were used as the positive electrode and activated carbon (AC) as the negative electrode to assemble the supercapacitor Cu-DATPs//AC, which was investigated through the dual-electrode testing. The results indicate that M-DATPs possess excellence electrochemical performance, the specific capacitance of sample Cu-DATPs get 853.87 F g<sup>−1</sup> at a current density of 0.5 A g<sup>−1</sup>. And the galvanostatic charge–discharge (GCD) research illustrate that sample Cu-DATPs have good cycling stability. In addition, the energy density of Cu-DATPs//AC is 64.055 Wh kg<sup>−1</sup>, and the power density is 288.46 W kg<sup>−1</sup>. This study provides a novel strategy for the synthesis of conjugated Schiff base polymers and metal ion coordination to prepare electrode materials with excellent electrochemical performance. </p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3885 - 3896"},"PeriodicalIF":2.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fabrication of Bi‐based metal‐organic framework for efficient electrocatalytic CO2 reduction to produce HCOOH","authors":"Jhong-Yi Lin, Chun-Wei Huang, Chun-Cheng Wang, Han-Wei Chang, Yu-Chen Tsai","doi":"10.1007/s10008-025-06266-5","DOIUrl":"10.1007/s10008-025-06266-5","url":null,"abstract":"<div><p>Global warming, environmental pollution, and climate change are critical challenges that demand immediate action through sustainable carbon capture and carbon utilization to mitigate their impacts. In this study, we synthesized a bismuth (Bi)-based metal–organic framework catalyst (CAU-17) with tunable morphology to investigate the impact of structural configuration on its electrocatalytic performance for the conversion of CO<sub>2</sub> to formic acid. The mixed hexagonal rod-like/plate-like structures of CAU-17 (M-CAU-17) expose abundant electrochemically active sites, which significantly enhances the efficiency of CO<sub>2</sub> conversion. At a potential of − 0.9 V (versus RHE), M-CAU-17 achieved a maximum Faradaic efficiency (FE<sub>max</sub>%) of about 80% for formic acid production, accompanied by a total current density of about 3.7 mA cm<sup>−2</sup>. Furthermore, the CO<sub>2</sub> electrolysis performance of M-CAU-17 exhibited exceptional stability over an extended period of 32 h at − 0.9 V (vs. RHE). This prolonged stability highlights the practical applicability of M-CAU-17 as a robust catalyst for sustained CO<sub>2</sub> reduction. These results underscore the significant potential of M-CAU-17 in selectively and efficiently producing formic acid. Overall, the study not only establishes the effectiveness of the catalyst but also offers a promising solution for sustainable carbon utilization and addressing environmental challenges.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2225 - 2234"},"PeriodicalIF":2.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mahmoud Rahal, Neus Vilà, Christelle Despas, Malik Sebbat, Akshay Silswal, Gediminas Jonusauskas, Nathan McClenaghan, Emmanuel Oheix, Bénédicte Lebeau, Morgan Cormier, Jean-Philippe Goddard, Alain Walcarius
{"title":"Photoelectrocatalytic response of tris(2,2′-bipyridyl)ruthenium(II)-modified mesoporous silica film on ITO electrode with methyl viologen quencher and EDTA donor","authors":"Mahmoud Rahal, Neus Vilà, Christelle Despas, Malik Sebbat, Akshay Silswal, Gediminas Jonusauskas, Nathan McClenaghan, Emmanuel Oheix, Bénédicte Lebeau, Morgan Cormier, Jean-Philippe Goddard, Alain Walcarius","doi":"10.1007/s10008-025-06254-9","DOIUrl":"10.1007/s10008-025-06254-9","url":null,"abstract":"<div><p>In the present paper, we investigate the photoelectrochemical behavior of a tris(bipyridine) derivative (denoted [Ru(bpy)<sub>2</sub>(bpy′)]<sup>2+</sup>) covalently immobilized in the nanochannels of a vertically aligned mesoporous silica film (VMSF) generated by electrochemically assisted self-assembly (EASA) onto a transparent indium-tin oxide (ITO) electrode, in solutions containing a quencher (methyl viologen, MV<sup>2+</sup>) and a model substrate partner (ethylenediaminetetraacetate, EDTA). The optimal film loading was first determined according to its solid-state photophysical properties. Then, the electrochemically accessible [Ru(bpy)<sub>2</sub>(bpy′)]<sup>2+</sup> moieties were exploited in the presence of the MV<sup>2+</sup> quencher alone in solution (aerated medium) to demonstrate the possible electrochemical regeneration of the photocatalyst immobilized in VMSF on ITO. This was achieved on the basis of experiments carried out by hydrodynamic amperometry at constant potential under successive sequential illumination (at 400 nm) and dark periods. Finally, the functionalized film was applied to the photoelectrocatalytic oxidation of EDTA in an oxygen-free solution containing also MV<sup>2+</sup> species, thanks to the effective electrochemical regeneration of the quencher, as also evidenced by photocurrent measurements as a function of time with successive switching of light from “off” to “on” and vice versa. Such photoelectrocatalytic transformation of EDTA is possible at a much lower potential (− 0.1 V) than that observed for its direct electrocatalytic oxidation by the same [Ru(bpy)<sub>2</sub>(bpy′)]<sup>2+</sup>-functionalized film operating without light (+ 1.2 V).</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2129 - 2140"},"PeriodicalIF":2.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wanderson da Silva, Everson Thiago S. Gerôncio, Marília O. F. Goulart
{"title":"A novel immunosensor based on nanostructured modified electrodes with a conductive copolymer film and gold nanoparticles electrodeposited in ethaline deep eutectic solvent (DES) for the detection of the HER2 ECD breast cancer biomarker","authors":"Wanderson da Silva, Everson Thiago S. Gerôncio, Marília O. F. Goulart","doi":"10.1007/s10008-025-06255-8","DOIUrl":"10.1007/s10008-025-06255-8","url":null,"abstract":"<div><p>This study introduces a highly sensitive and innovative electrochemical immunosensor for detecting the extracellular domain of human epidermal growth factor receptor 2 (HER2 ECD), a critical biomarker for breast cancer diagnosis. The immunosensor integrates a gold nanoparticle (AuNP)-modified nanostructured electrode with a conductive copolymer film, poly(an-co-8-ansa), synthesized and electrodeposited in an ethaline deep eutectic solvent (DES) doped with HClO<sub>4</sub>. This novel approach employs DES not only as a medium for electrode modification but also as a strategy for enhancing the sensor’s uniformity, stability, and electrochemical performance. The platform achieved a limit of detection (LoD) of 0.98 ng mL⁻<sup>1</sup>, and the limit of quantification (LoQ) was 3.25 ng mL⁻<sup>1</sup>, which is lower than previously reported HER2 ECD biosensors, and demonstrated a linear detection range of 1.0–150 ng mL⁻<sup>1</sup>. The immunosensor’s performance was validated in human plasma, revealing its potential for clinical applications. The characterization through cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy confirmed the enhanced properties of the DES-based copolymer films and nanostructures. Integrating DES with AuNP and poly(an-co-8-ansa) film represents a significant advancement in biosensor technology, providing a cost-effective, sensitive, and robust tool for early breast cancer detection. This is the first reported immunosensor leveraging DES for HER2 ECD detection, representing a transformative advancement in biosensing technology. Its sensitivity effectively encompasses the critical HER2 levels observed in breast cancer patients, underscoring its potential as a reliable and powerful tool for future breast cancer diagnosis.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2335 - 2350"},"PeriodicalIF":2.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reuse of waste lithium by-product graphite in low-cost rechargeable aluminum batteries","authors":"Weize Xu, Jia Qiao, Fangping Wang, Xin Li, Guokang Wei, Aichun Dou, Deming Fan, Jianhong Yang","doi":"10.1007/s10008-025-06272-7","DOIUrl":"10.1007/s10008-025-06272-7","url":null,"abstract":"<div><p>Rechargeable aluminum batteries (RABs) are considered promising candidates for large-scale energy storage devices due to their remarkable characteristics in terms of theoretical energy density, safety, environmental friendliness, and sustainability. However, the proper selection of cathode materials and the high price of suitable electrolytes have greatly delayed the process of their commercial application. In this study, a cost-effective RAB module consisting of regenerated graphite (RG) from lithium-ion batteries recovery process as cathode and NaCl-KCl-AlCl<sub>3</sub> low-temperature molten salt as electrolyte is reported. At an operating temperature of 110 °C, the Al/RG battery demonstrates a promising electrochemical performance. After 1000 cycles at a current density of 0.5 A g<sup>−1</sup>, RG retains a discharge-specific capacity of 114.7 mAh g<sup>−1</sup> (the highest is 133.6 mAh g<sup>−1</sup>), superior to 99.1 mAh g<sup>−1</sup> for natural graphite as a contrast under equivalent conditions. The underlying mechanism governing the Al/RG battery is further elucidated that RG preserves its crystalline structure while successfully eliminating most of impurities and exhibits an enhanced interlayer spacing during the post-recycling. Furthermore, information on the price of by-product graphite produced during commercial recycling was collected, which shows that its cost could be as low as 0.07 USD kg<sup>−1</sup>. This research not only advances the recycling of by-product graphite during recovery processes but also highlights remarkable electrochemical performance in economically viable molten salt RABs, thereby offering novel insights for large-scale commercial energy storage applications utilizing RAB technology.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3873 - 3884"},"PeriodicalIF":2.6,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rashmi M, Samrat Devaramani, Xiaofang Ma, Saju Pillai, Ahipa T. N., Prasad B. E., Sureshkumar K
{"title":"Electrochemical sensing of Cr(VI): Leveraging the copper electrode by copper chromium interaction","authors":"Rashmi M, Samrat Devaramani, Xiaofang Ma, Saju Pillai, Ahipa T. N., Prasad B. E., Sureshkumar K","doi":"10.1007/s10008-025-06264-7","DOIUrl":"10.1007/s10008-025-06264-7","url":null,"abstract":"<div><p>This work reports the detection of Cr(VI) using a copper electrode without electrode modification, pre-concentration, and the reagent. The electrochemical detection of Cr(VI) was achieved by the interaction between Cr(VI) and the Cu electrode. On exposure chromium adsorbed onto the surface of the copper electrode. The adsorbed chromium passivates the Cu electrode and, in turn, suppresses the original anodic peak current of copper. The electrode coverage by the adsorbed layer varied and resulted in a proportional decrease in the current over the tested range, 10 to 50 µg L<sup>-1</sup>, of Cr(VI). The calibration graph was obtained using the linear regression equation y=-0.012x+0.708 and an R<sup>2</sup> value of 0.998. The tested heavy metal ions Hg<sup>2+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup>, and Zn<sup>2+</sup> did not interfere at 10-fold excess than Cr(VI). The analytical figures of merit LOD and LOQ were 0.981 µg L<sup>-1</sup> and 2.974 µg L<sup>-1</sup> respectively. The applicability of the method to quantify Cr(VI) in water samples was examined and validated using a standard AAS method. The relative difference in sample analysis was less than 4%. In the proposed method, the characteristic interaction between the copper electrode and Cr(VI) is manifested to demonstrate that a pristine copper electrode can selectively sense toxic Cr(VI) down to µg L<sup>-1</sup>. The electrodes were characterized by XRD, SEM, EDS, and XPS after the Cr(VI) interaction. The detailed characterization confirmed the changes in the surface morphology and facile adsorption of chromium on the copper electrode.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3859 - 3871"},"PeriodicalIF":2.6,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Robert Barber, Taylor S. Cunning, Victoria Gilpin, Martin McBride, Nigel G. Ternan, William J. Snelling, Pagona Papakonstantinou, James Davis
{"title":"Development of a composite graphene-Prussian blue-chitosan sensor for monitoring peroxide within Lactobacillus johnsonii DSM 10533 cultures","authors":"Robert Barber, Taylor S. Cunning, Victoria Gilpin, Martin McBride, Nigel G. Ternan, William J. Snelling, Pagona Papakonstantinou, James Davis","doi":"10.1007/s10008-025-06260-x","DOIUrl":"10.1007/s10008-025-06260-x","url":null,"abstract":"<div><p>The design and application of a composite sensor for monitoring bacterial peroxide originating from <i>Lactobacillus johnsonii</i> DSM 10533 is described. The sensor format is based on the co-deposition of Prussian blue and chitosan onto a laser-induced graphene substrate to yield a highly sensitive system capable of monitoring peroxide with bacterial culture over the range 20 µM to 1 mM with a sensitivity of 122 mA/mM and detection limit of 30 mM. Amperometric detection of H<sub>2</sub>O<sub>2</sub> at − 0.036 V vs Ag/AgCl was achieved allowing selectivity in complex media. The miniature nature of the sensor enabled a detection volume of 200 µL and gave a response in 20 s, and the samples required no dilution or reagent addition. The ability to rapidly prototype LIG-PB-CS integrated electrode assemblies provides a facile route for the production of sensors capable of monitoring lactobacilli interactions at small scales and within batch-level fermentation reactors.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2351 - 2359"},"PeriodicalIF":2.6,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-025-06260-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. A. K. L. Dissanayake, S. Senthuran, G. K. R. Senadeera
{"title":"Correction to: Plasmonic enhanced multifunctional composite photoanode for highly efficient dye‑sensitized solar cells","authors":"M. A. K. L. Dissanayake, S. Senthuran, G. K. R. Senadeera","doi":"10.1007/s10008-025-06259-4","DOIUrl":"10.1007/s10008-025-06259-4","url":null,"abstract":"","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3719 - 3720"},"PeriodicalIF":2.6,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reham M. Ali, Abou-Elhagag A. Hermas, Abobakr M. Elnady, Tharwat H. Mansoure
{"title":"Electrodeposition and corrosion protection properties of conducting PEDOT coatings on steel electrode","authors":"Reham M. Ali, Abou-Elhagag A. Hermas, Abobakr M. Elnady, Tharwat H. Mansoure","doi":"10.1007/s10008-025-06238-9","DOIUrl":"10.1007/s10008-025-06238-9","url":null,"abstract":"<div><p>Conducting polymers (CPs), such as poly(3,4-ethylenedioxythiophene) (PEDOT), are widely recognized for their exceptional electrical conductivity, chemical stability, and environmental durability, making them promising candidates for protective coatings on metal surfaces. In this study, PEDOT coatings were electrochemically deposited on mild steel and platinum electrodes using cyclic voltammetry (CV) in a non-aqueous acetonitrile medium containing tetrabutylammonium hexafluorophosphate. The deposition conditions—including scan rate, initial and final potentials, monomer concentration, and temperature—were optimized to achieve a homogeneous, compact, and adhesive polymer layer. The optimal conditions involved an EDOT monomer concentration of 0.01 M, a scan rate of 100 mV/s, and a potential range from − 0.5 to 1.8 V (SCE) at 30 °C. The electropolymerization process was found to be more efficient on steel (activation energy, <i>E</i><sub><i>a</i></sub> = 10.894 kJ/mol) than on platinum (<i>E</i><sub><i>a</i></sub> = 49.426 kJ/mol), resulting in a denser PEDOT film with lower activation energy. Fourier transform infrared spectroscopy (FTIR) confirmed successful polymerization, while scanning electron microscopy (SEM) revealed distinct morphological differences between PEDOT coatings on steel and platinum surfaces. Corrosion studies in HCl and H₂SO₄ solutions demonstrated that PEDOT-coated steel exhibited substantially enhanced corrosion resistance compared to uncoated steel, achieving a protective efficiency of up to 66% after 24 h of immersion. Electrochemical impedance spectroscopy (EIS) further highlighted the superior barrier properties of PEDOT, emphasizing its ability to prevent corrosion by forming an effective barrier layer and promoting the formation of a passive film beneath the coating.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3829 - 3842"},"PeriodicalIF":2.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sensitive and selective detection of 4-nitrophenol using a zirconium metal–organic framework loaded reduced graphene oxide modified glassy carbon electrode","authors":"Nishanthi Vasanthi Sridharan, Badal Kumar Mandal","doi":"10.1007/s10008-025-06257-6","DOIUrl":"10.1007/s10008-025-06257-6","url":null,"abstract":"<div><p>Phenolic compounds in water bodies pose significant threats to humans, animals and aquatic life. A new electrochemical sensor has been developed for the sensitive and selective detection of 4-nitrophenol (4-NP), utilizing the incorporation of zirconium metal–organic framework (UiO-66-NH<sub>2</sub>) and reduced graphene oxide (rGO). The UiO-66-NH<sub>2</sub>/rGO electrocatalyst was synthesized by the solvothermal method using zirconium oxychloride octahydrate, 2-amino terephthalic acid and rGO. Various characterization techniques including — X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Field-emission scanning electron microscopy (FESEM), UV–visible diffuse reflectance spectroscopy (UV-DRS), Raman spectroscopy and cyclic voltammetry (CV) were employed to analyze the physical properties, morphology, and electrochemical performance of the prepared materials. The resulting UiO-66-NH<sub>2</sub>/rGO/GCE electrode demonstrates effective electrocatalytic activity for the cathodic reduction of 4-NP due to its high porosity, favourable electron transfer kinetics and enhanced sensitivity. Differential pulse voltammetry reveals a linear response for 4-NP concentrations ranging from 0.5 to 100 μM, with a high sensitivity of 0.1 μA/μM and a low detection limit of 15 nM. Additionally, the sensor showcases several advantages, including anti-interference ability, selectivity for 4-NP in the presence of other interfering species, strong repeatability and stability. The developed sensor was successfully tested for practical applications in river water samples. </p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 9","pages":"3843 - 3858"},"PeriodicalIF":2.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}