New Journal of Chemistry最新文献

{"title":"The role of Ti3C2Tx MXene in hydrogel engineering for structural organization and ROS scavenging in bacterial models†","authors":"Michał Jakubczak, Iga Niewiadomska, Agnieszka Górnik, Dominika Bury, Marcin Odziomek, Dorota Moszczyńska and Agnieszka Maria Jastrzębska","doi":"10.1039/D5NJ01286D","DOIUrl":"https://doi.org/10.1039/D5NJ01286D","url":null,"abstract":"<p >Ti<small>₃</small>C<small>₂</small>T<small>_<em>x</em></small> MXene-modified hydrogels offer a unique platform for exploring the interplay between nanomaterials, hydrogel structures, and biological interactions. In this study, we synthesized and characterized 2D Ti<small>₃</small>C<small>₂</small>T<small>_<em>x</em></small> MXene nanoflakes and integrated them into hydrogel matrices to investigate their impact on structural organization, crosslinking, and interactions with bacterial models. The incorporation of MXenes stabilized the architecture of the hydrogel, particularly in alginate-based matrices lacking chitosan, leading to more organized crosslinking and uniform pore distribution. Chitosan facilitated better MXene nanoflakes dispersion but had a limited effect on structural improvements. Contrary to initial expectations, MXenes did not enhance antibacterial properties. Instead, MXenes exhibited ROS scavenging activity, contributing to increased bacterial viability in both <em>E. coli</em> and <em>S. aureus</em> models. Notably, alginate/chitosan/elastine hydrogels supported up to 144% viability of <em>E. coli</em> after 72 h, highlighting the role of hydrogel structure and redox modulation in microbial interactions. These findings position Ti<small>₃</small>C<small>₂</small>T<small>_<em>x</em></small> MXene as structural and ROS-modulating components in hydrogel matrices. While these effects were studied in bacterial models, they underscore the material's potential in applications where oxidative stress regulation is relevant, warranting further investigation in mammalian systems.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15129-15144"},"PeriodicalIF":2.5,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nj/d5nj01286d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011481","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":"Biofabrication of a bismuth vanadate/bacterial nanocellulose adsorbent: a photocatalytic mesoporous composite for efficient removal of a fluorochrome pollutant","authors":"Bendangtula Walling, Pranjal Bharali, D. Ramachandran, Kanagasabai Viswanathan, Nipu Dutta, Naorem Shanta Singh, Swapnali Hazarika, Rajiv K. Srivastava, Balamurali Mahalakshmi, Jeganathan Manivannan and Viphrezolie Sorhie","doi":"10.1039/D5NJ02109J","DOIUrl":"https://doi.org/10.1039/D5NJ02109J","url":null,"abstract":"<p >The current work concentrated on a novel biofabrication method that employs bismuth vanadate (BiVO<small>₄</small>) nanoparticles and bacterial nanocellulose (BNC) to develop a bionanocomposite. The developed bionanocomposite was evaluated for its prowess in adsorption and degradation using the acridine orange (AO) dye. Comprehensive textural analyses were performed using FTIR, XRD, XPS, BET, FESEM, EDX, TEM, and TGA. Results revealed a dense nanofibrous network with enhanced thermal stability up to 600 °C. The N<small>₂</small> adsorption–desorption isotherm showed its mesoporous nature, exhibiting a type IV structure. Adsorption data for AO adhered well to the Langmuir adsorption isotherm and 2nd pseudo-order kinetics, while thermodynamic analysis revealed a spontaneous, endothermic adsorption process. Remarkably, the bionanocomposite demonstrated regeneration capacity for up to five cycles. The photocatalytic prowess of the bionanocomposite was evaluated for AO degradation under visible light. Results illustrated BNC's role as a support, establishing an interface with BiVO<small>₄</small> to reduce electron–hole recombination and heighten catalyst photodegradation efficiency. Photoluminescence analysis further validated this interaction by confirming suppressed electron–hole recombination in the composite. Findings highlight the bionanocomposite's efficacy in both adsorption and photocatalysis. Furthermore, the cytotoxicity assessment of the bionanocomposite on hepatocyte cells verified its non-toxic nature. This study illuminates the potential of a designed bionanocomposite model, offering a cost-effective, operationally simple, highly efficient, and environmentally benign solution to address dye pollution challenges.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16235-16255"},"PeriodicalIF":2.5,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110412","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":"Green synthesis of pyrrolo[2,3-d]pyrimidine Schiff bases via ionic liquid catalysis: computational and experimental exploration of antimicrobial potentials","authors":"Nilesh Bhusari, Abhay Bagul, Manish Kumar, Aisha Tufail, Vipin Kumar Mishra, Magda H. Abdellattif, Digambar Gaikwad and Amit Dubey","doi":"10.1039/D5NJ02481A","DOIUrl":"https://doi.org/10.1039/D5NJ02481A","url":null,"abstract":"<p >A green and efficient synthetic approach was developed for a novel series of pyrrolo[2,3-<em>d</em>]pyrimidine-based Schiff bases (<strong>PPR1a–d</strong>) using microwave-assisted ionic liquid catalysis. The ionic liquid [HMIM][TFSI] served as both catalyst and solvent, enabling solvent-free synthesis at 120 W microwave power and 80 °C within 10 min, yielding products in excellent yields of 87.0–93.0%. All compounds were structurally confirmed by FT-IR, <small>¹</small>H NMR, <small>¹³</small>C NMR, ESI-MS, and elemental analysis. Among them, <strong>PPR1b</strong> exhibited the most potent antimicrobial activity, showing an inhibition zone of 29.0 mm against <em>Bacillus subtilis</em> and 18.5 mm against <em>Candida albicans</em>, outperforming streptomycin (23.5 mm) and fluconazole (15.3 mm), respectively. Cytotoxicity studies using the brine shrimp lethality assay yielded LC<small>₅₀</small> values of 25.6 μg mL<small>⁻¹</small> (<strong>PPR1b</strong>) and 29.3 μg mL<small>⁻¹</small> (<strong>PPR1c</strong>), indicating low toxicity. DFT analysis revealed a minimum HOMO–LUMO energy gap of 2.85 eV for <strong>PPR1b</strong>, while molecular docking showed a binding energy of −9.1 kcal mol<small>⁻¹</small> with <em>S. aureus</em> DNA gyrase. ADMET and 100 ns MD simulations confirmed drug-likeness, GI absorption, BBB permeability, and complex stability. This study uniquely integrates green synthesis, <em>in vitro</em> antimicrobial validation, and <em>in silico</em> insights, offering promising antimicrobial agents with sustainable production routes.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15397-15419"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011421","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":"Multicomponent synthesis of benzo[c]acridinones, physicochemical analysis of their inclusion complexes with cyclodextrins in the liquid state, and evaluation of the inhibition of enzymatic activity","authors":"Aline de Fátima Silva Lago, Débora da Silva Maculan Fernandes, Mariana Aparecida Braga, Marcos Vinicios da Silva, Silvana Marcussi, Luciana Matos Alves Pinto and Sérgio Scherrer Thomasi","doi":"10.1039/D5NJ02013A","DOIUrl":"https://doi.org/10.1039/D5NJ02013A","url":null,"abstract":"<p >Benzo[<em>c</em>]acridinones are heterocyclic compounds with promising biological potential, including antimicrobial and antitumor effects. However, these molecules are nonpolar and exhibit low solubility, limiting their practical application. To overcome this limitation, the formation of inclusion complexes has been investigated as a strategy to enhance solubility. Among potential complexing agents, cyclodextrins stand out due to their widespread use in the pharmaceutical industry. This study aimed to investigate the formation of inclusion complexes in solution through spectroscopic analyses, including ultraviolet-visible (UV-vis) spectroscopy and one- and two-dimensional nuclear magnetic resonance (NMR). The results demonstrated the efficiency of various cyclodextrins in forming soluble inclusion complexes. It was observed that the interaction between cyclodextrins and benzo[<em>c</em>]acridinones is primarily governed by weak intermolecular forces. Two-dimensional NMR (ROESY) confirmed the formation of inclusion complexes between the <strong>C2</strong> molecule and β-cyclodextrin (β-CD), while no inclusion complex was observed for the <strong>C1</strong> molecule. Additionally, <em>in vitro</em> dissolution studies indicated an increase in the solubility of the molecules upon complexation. The ability of these compounds and their inclusion complexes to inhibit phospholipase A<small>₂</small> and protease enzymes was also evaluated. The results showed that the inclusion complexes exhibited enhanced inhibitory activity compared to the pure compounds.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15287-15297"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011399","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":"A smartphone-assisted highly sensitive chromone-derived fluorescent receptor for rare-earth cerium metal ion detection: environmental monitoring and cancer cell imaging","authors":"Saravana Kumar Prathiba, Karuppaiyan Kaviya, Ramar Rajamanikandan and Kailasam Saravana Mani","doi":"10.1039/D5NJ02445E","DOIUrl":"https://doi.org/10.1039/D5NJ02445E","url":null,"abstract":"<p >In this work, a new chromone-based fluorescent organic material, 3-(((2,4-di-<em>tert</em>-butyl-5-hydroxyphenyl)imino)methyl)-4<em>H</em>-chromen-4-one (<strong>OSA</strong>), has been designed and developed for the selective detection of cerium (Ce<small>³⁺</small>) ions. The structure of the synthesized receptor <strong>OSA</strong> has been confirmed through spectroscopic techniques, including FT-IR, NMR, and mass spectral analysis. The <strong>OSA</strong> receptor exhibits selective “turn off” colorimetric and fluorometric responses for the addition of Ce<small>³⁺</small> ions. Upon incremental addition of Ce<small>³⁺</small> ions, the receptor <strong>OSA</strong> exhibited a linearly decreasing response, with a lowest limit of detection of 63.8 nM. By using DFT, Job's plot, and mass spectrum analysis, the binding stoichiometry between the receptor and Ce<small>³⁺</small> ions was verified as a 1 : 1 ratio. Ce<small>³⁺</small> ion interaction with <strong>OSA</strong> produces a noticeable color shift, which was combined with an RGB color variation study of smartphones. Furthermore, this chemosensor <strong>OSA</strong> was applied in the detection of Ce<small>³⁺</small> ions in environmental water samples. Fluorescence bioimaging in ME-180 cells revealed that the receptor <strong>OSA</strong> exhibited high cell permeability and showed a fluorescence “turn-off” response upon addition of Ce<small>³⁺</small> ions.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16019-16028"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110423","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":"Long-chain thiol-regulated hierarchical flower-like silver nanoparticles self-assembled on filter paper as highly sensitive flexible SERS substrates for pesticide residue detection","authors":"Yunpeng Shao, Wenlong Deng, Yue Niu, Zicheng Zhang, Jiwei Song, Yuan Yao and Linyu Mei","doi":"10.1039/D5NJ01564B","DOIUrl":"https://doi.org/10.1039/D5NJ01564B","url":null,"abstract":"<p >Liquid–liquid interface self-assembly enables efficient surface-enhanced Raman scattering (SERS) detection. Transferring self-assembled membranes to flexible/rigid substrates reduces liquid-phase instability and background interference. This study employed a straightforward chemical method to synthesize hierarchical flower-like silver nanoparticles (Ag NFs), and introduced long-chain thiols to construct a novel self-assembly platform. Incorporating thiols converted the repulsive forces between nanoparticles into van der Waals interactions, forming a compact and ordered self-assembled membrane. The self-assembled membrane rapidly transfers to the filter paper substrate by utilizing the capillary effect of the filter paper, thereby extending the applicability of the self-assembled SERS platform. These Ag NFs, characterized by hierarchical three-dimensional structures, can effectively generate numerous surface plasmon resonance ‘hotspots’ and exhibit remarkable SERS activity. The detection limit of the Ag NFs/filter paper substrate for rhodamine 6G (R6G) is reduced to 10<small>⁻¹¹</small> M, and a significant linear correlation exists between the Raman intensity and the R6G concentration, with the <em>R</em><small>²</small> value of the fitted curve being 0.96. The relative standard deviation (RSD) of the three typical characteristic peaks of R6G is 8.54%. Furthermore, the flexibility and porosity of the filter paper substrate enhance direct contact with analytes on curved surfaces, enabling the detection of methylene blue (MB), Sudan I, and carbendazim (CBZ) on apple surfaces through the 'stick-peel' technique. Due to their simple preparation and excellent sensitivity, an Ag NFs/filter paper substrate is suitable for practical applications in non-invasive sampling, while providing an effective strategy for the rapid construction of SERS substrate platforms.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16097-16104"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110430","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":"Biogenic synthesis of zinc oxide nanoparticles using cell-free extract of Spirogyra crassa (Kütz.) Kütz for sustainable biomedical and environmental applications","authors":"Vinay Kumar, Sandeep Kaushal and Yadvinder Singh","doi":"10.1039/D5NJ02044A","DOIUrl":"https://doi.org/10.1039/D5NJ02044A","url":null,"abstract":"<p >This study focuses on the biosynthesis of zinc oxide nanoparticles (ZnO NPs) utilizing the cell-free extract derived from the green alga <em>Spirogyra crassa</em> (Kütz.) Kütz. A suite of advanced analytical techniques, including FTIR, XRD, FESEM, EDS, HRTEM, XPS, and BET, were employed to confirm the formation and extensively characterize the biosynthesized ZnO nanoparticles. XRD analysis confirmed the formation of a highly crystalline nanomaterial with an average crystallite size of approximately 29 nm. FESEM and HRTEM analyses revealed that the biogenically synthesized ZnO nanoparticles predominantly exhibited a spherical morphology. The biogenically synthesized ZnO nanoparticles exhibit a well-defined crystalline structure, belonging to the hexagonal wurtzite phase with the space group <em>P</em>6<small>₃</small><em>mc</em> (space group number: 186). BET analysis revealed that the biogenically synthesized ZnO nanoparticles have a total surface area of 14.97 m<small>²</small> g<small>⁻¹</small>, a pore volume of 0.0342 cm<small>³</small> g<small>⁻¹</small>, and an average pore size of 3.07 nm. The ZnO NPs proved to exhibit significant antidiabetic potential as the sample showed the highest percentage (74.25% ± 2.7) of enzyme inhibition at 30 μg mL<small>⁻¹</small> concentration with IC50 values of 18.69 μg mL<small>⁻¹</small> for α-amylase and 19.06 μg mL<small>⁻¹</small> for α-glucosidase, while in the antioxidant test, the highest percentage (85.15% ± 3.2) of 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) scavenging activity was observed with an IC50 value of 17.90 μg mL<small>⁻¹</small>. In addition, the photocatalytic degradation of malachite green dye under sunlight irradiation demonstrated the environmental applicability of the synthesized nanoparticles, achieving a degradation efficiency of 95.7% within 150 minutes. These findings underscore the synergistic biomedical and environmental potential of algal-derived ZnO NPs for sustainable nanotechnology applications.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16145-16159"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110393","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":"A semi-solid hydrogel state electrochromic device based on an asymmetric disubstituted viologen containing a quaternary ammonium group with enhanced electrochromic stability","authors":"Lin Yin, Chen-xin Yang, Yu-xuan Han, Hao Zhang, Feng-lu Jiang, Wen-tao Zhong, Cheng-bin Gong and Qian Tang","doi":"10.1039/D5NJ02611C","DOIUrl":"https://doi.org/10.1039/D5NJ02611C","url":null,"abstract":"<p >This work aims to investigate the electrochromic behavior of an asymmetric disubstituted viologen containing a quaternary ammonium group in semi-solid hydrogel state electrochromic devices. The asymmetric disubstituted viologen <strong>BTMAPP<small>³⁺</small>3Br<small>⁻</small></strong> was synthesized as the electrochromic material, and two symmetric disubstituted viologens (<strong>DTMAPP<small>⁴⁺</small>4Br<small>⁻</small></strong> and <strong>DBP<small>²⁺</small>2Br<small>⁻</small></strong>) were synthesized as the control electrochromic materials. Polyacrylamide hydrogel state ECDs based on three electrochromic materials were assembled <em>via in situ</em> photoinitiated polymerization of acrylamide under UV light, and their electrochemical and electrochromic performances were investigated. They showed similar electrochemical performance. They also required the same working voltage and achieved a similar color change from a colorless bleached state to a blue-purple colored state. It is noteworthy that the ECD based on <strong>BTMAPP<small>³⁺</small>3Br<small>⁻</small></strong> showed better cycling stability (retaining of the initial optical contrast after 16 000 s monitored: 95.6% <em>versus</em> 70.7% and 78.5%) and a higher coloration efficiency (115 cm<small>²</small> C<small>⁻¹</small><em>versus</em> 96 cm<small>²</small> C<small>⁻¹</small> and 103 cm<small>²</small> C<small>⁻¹</small>) compared to the PAM ECDs based on two symmetric disubstituted viologens. The results indicate that an asymmetric disubstituted viologen containing a quaternary ammonium group can enhance the cycling stability of the gel-state ECD through suppressing the formation of radical cation dimers. The all-in-one semi-solid hydrogel state ECDs based on <strong>BTMAPP<small>³⁺</small>3Br<small>⁻</small></strong> with advantages of easy-to-make process, good cycling stability, low operating voltage, high coloration efficiency and low power consumption offer a new choice for electronic labels, solar cell powered displays, smart windows, <em>etc.</em></p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 36","pages":" 15895-15902"},"PeriodicalIF":2.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061998","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":"Janus Ga4S4Cl2X2 (X = F, Br, I) monolayers: first-principles investigation of in- and out-of-plane piezoelectric properties","authors":"Yi Xie, Xinguo Ma, Youyou Guo, Yufeng Wei, Shida Yao, Aolei Xiong, Hui Lv and ZongFu Tang","doi":"10.1039/D5NJ01306B","DOIUrl":"https://doi.org/10.1039/D5NJ01306B","url":null,"abstract":"<p >With the rapid development of device miniaturization and self-powered detection, detecting two-dimensional materials with significant polarization to improve the electromechanical conversion efficiency has become a research hotspot. Here, a Janus material structure Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>X<small>₂</small> (X = F, Br, I) was proposed and its piezoelectric properties were explored by first-principles. The results show that the in-plane piezoelectric coefficient <em>d</em><small>₁₁</small> of Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>F<small>₂</small>, Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>Br<small>₂</small>, and Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>I<small>₂</small> are 10.01, 13.78, and 15.17 pm V<small>⁻¹</small>, respectively. At the same time, because of the inherent asymmetry of the structure, the non-zero out-of-plane piezoelectric coefficient <em>d</em><small>₃₁</small> of Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>F<small>₂</small>, Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>Br<small>₂</small>, and Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>I<small>₂</small> are 0.43, 0.16, and 0.43 pm V<small>⁻¹</small>, respectively. Therefore, it can be found that the Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>F<small>₂</small> and Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>I<small>₂</small> monolayers have the strongest vertical polarization, which is consistent with the trend of the change in the dielectric constant and the electric dipole moment, the built-in electric field strength, and its excellent flexibility. These results lay a solid theoretical foundation for the potential applications of the novel Janus two-dimensional Ga<small>₄</small>S<small>₄</small>Cl<small>₂</small>X<small>₂</small> monolayers in nanodevices, microelectromechanical systems, and sensitive biological probes.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 34","pages":" 14614-14622"},"PeriodicalIF":2.5,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896866","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":"Cu-modified Bi nanorods stabilize HCOO* intermediates for efficient CO2-to-formate electrocatalytic conversion","authors":"Yijia Guo, Xueyan Wu and Jixi Guo","doi":"10.1039/D5NJ01939G","DOIUrl":"https://doi.org/10.1039/D5NJ01939G","url":null,"abstract":"<p >The electrocatalytic carbon dioxide reduction reaction (CO<small>₂</small>RR) is a promising approach for simultaneous CO<small>₂</small> mitigation and production of value-added chemicals. Bismuth has been demonstrated as a fascinating electrocatalyst for the selective conversion of CO<small>₂</small> to formate. However, the stability of single-metal bismuth catalysts and selectivity of formate are still unsatisfactory. Herein, rod-like Cu-doped Bi catalysts were synthesized by controlled oxidation of CuBi/CNF precursors. These catalysts exhibited excellent performance in the CO<small>₂</small>RR, achieving a formate Faraday efficiency (FE<small>_Formate</small>) of 92.39% at −1.4 V (<em>vs.</em> RHE) and maintaining stability for 32 h. <em>In situ</em> spectroscopy analysis confirmed that HCOO* intermediates dominated the formate production reaction of the CO<small>₂</small>RR. The metal doping strategy enables the Bi catalysts to increase the FE<small>_Formate</small> by about 13% at a potential of −1.4 V (<em>vs.</em> RHE). The introduction of Cu results in a lattice compressive strain, which can change the monomolecular structure of Bi, and the synergy between the bimetals improves the binding of adsorbed species, enhancing the activation of CO<small>₂</small>. The <em>in situ</em> FT-IR calculation demonstrated that HCOO* rather than a *COOH pathway benefits the stability of bismuth catalysts and formate selectivity for the CO<small>₂</small>RR. This work offers insights into improving the catalytic performance of bismuth catalysts for the CO<small>₂</small>RR.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 34","pages":" 14978-14986"},"PeriodicalIF":2.5,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896942","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}